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Piano key frequencies
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<h2 id="list">List</h2> <p>Values in bold are exact on an idealized standard piano. Keys shaded gray are rare and only appear on extended pianos. The normal 88 keys were numbered 1–88, with the extra low keys numbered 89–97 and the extra high keys numbered 98–108. A 108-key piano that extends from C0 to B8 was first built in 2018 by <a href="/facts/Stuart_%2526_Sons/v3W2xI0H">Stuart & Sons</a>.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> (Note: these piano key numbers 1–108 are not the n keys in the equations or the table.) </p> <table><tbody><tr><th rowspan="2">Piano key number</th><th rowspan="2">MIDI note number</th><th rowspan="2"><a href="/facts/Helmholtz_pitch_notation/Meswdb5g">Helmholtz</a> name<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a></th><th rowspan="2"><a href="/facts/Scientific_pitch_notation/rq2QnnyE">Scientific pitch</a> name<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a></th><th rowspan="2">n</th><th rowspan="2">Frequency f(n) (<a href="/facts/Hertz/6Wshj5qm">Hz</a>) (Equal temperament) <a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a></th><th colspan="6">Corresponding open strings on other instruments</th><th colspan="6"><a href="/facts/Vocal_range/nlkCgBEr">Vocal Ranges</a></th></tr><tr><th><a href="/facts/Violin/0m2eLF3B">Violin</a></th><th><a href="/facts/Viola/l869ofuf">Viola</a></th><th><a href="/facts/Cello/IeYEXr96">Cello</a></th><th><a href="/facts/Double_bass/zyyj4aay">Bass</a></th><th><a href="/facts/Guitar_tunings/fr9aUeQw">Guitar</a></th><th><a href="/facts/Ukulele/BwpjfePy">Ukulele</a></th><th>Soprano</th><th>Mezzo-soprano</th><th>Contralto</th><th>Tenor</th><th>Baritone</th><th>Bass</th></tr><tr><td>108</td><td>119</td><td>b′′′′′</td><td>B8</td><td>99</td><td>7902.133</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>107</td><td>118</td><td>a♯′′′′′/b♭′′′′′</td><td>A♯8/B♭8</td><td>98</td><td>7458.620</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>106</td><td>117</td><td>a′′′′′</td><td>A8</td><td>97</td><td>7040.000</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>105</td><td>116</td><td>g♯′′′′′/a♭′′′′′</td><td>G♯8/A♭8</td><td>96</td><td>6644.875</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>104</td><td>115</td><td>g′′′′′</td><td>G8</td><td>95</td><td>6271.927</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>103</td><td>114</td><td>f♯′′′′′/g♭′′′′′</td><td>F♯8/G♭8</td><td>94</td><td>5919.911</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>102</td><td>113</td><td>f′′′′′</td><td>F8</td><td>93</td><td>5587.652</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>101</td><td>112</td><td>e′′′′′</td><td>E8</td><td>92</td><td>5274.041</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>100</td><td>111</td><td>d♯′′′′′/e♭′′′′′</td><td>D♯8/E♭8</td><td>91</td><td>4978.032</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>99</td><td>110</td><td>d′′′′′</td><td>D8</td><td>90</td><td>4698.636</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>98</td><td>109</td><td>c♯′′′′′/d♭′′′′′</td><td>C♯8/D♭8</td><td>89</td><td>4434.922</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>88</td><td>108</td><td>c′′′′′ 5-line <a href="/facts/Octave/RA4gWvkV">octave</a></td><td><a href="/facts/Eighth_octave_C/FdvRz0zL">C8</a> Eighth octave</td><td>88</td><td>4186.009</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>87</td><td>107</td><td>b′′′′</td><td>B7</td><td>87</td><td>3951.066</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>86</td><td>106</td><td>a♯′′′′/b♭′′′′</td><td>A♯7/B♭7</td><td>86</td><td>3729.310</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>85</td><td>105</td><td>a′′′′</td><td>A7</td><td>85</td><td>3520.000</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>84</td><td>104</td><td>g♯′′′′/a♭′′′′</td><td>G♯7/A♭7</td><td>84</td><td>3322.438</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>83</td><td>103</td><td>g′′′′</td><td>G7</td><td>83</td><td>3135.963</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>82</td><td>102</td><td>f♯′′′′/g♭′′′′</td><td>F♯7/G♭7</td><td>82</td><td>2959.955</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>81</td><td>101</td><td>f′′′′</td><td>F7</td><td>81</td><td>2793.826</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>80</td><td>100</td><td>e′′′′</td><td>E7</td><td>80</td><td>2637.020</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>79</td><td>99</td><td>d♯′′′′/e♭′′′′</td><td>D♯7/E♭7</td><td>79</td><td>2489.016</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>78</td><td>98</td><td>d′′′′</td><td>D7</td><td>78</td><td>2349.318</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>77</td><td>97</td><td>c♯′′′′/d♭′′′′</td><td>C♯7/D♭7</td><td>77</td><td>2217.461</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>76</td><td>96</td><td>c′′′′ 4-line <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C7 <a href="/facts/Double_high_C/xSWQhmEt">Double high C</a></td><td>76</td><td>2093.005</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>75</td><td>95</td><td>b′′′</td><td>B6</td><td>75</td><td>1975.533</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>74</td><td>94</td><td>a♯′′′/b♭′′′</td><td>A♯6/B♭6</td><td>74</td><td>1864.655</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>73</td><td>93</td><td>a′′′</td><td>A6</td><td>73</td><td>1760.000</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>72</td><td>92</td><td>g♯′′′/a♭′′′</td><td>G♯6/A♭6</td><td>72</td><td>1661.219</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>71</td><td>91</td><td>g′′′</td><td>G6</td><td>71</td><td>1567.982</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>70</td><td>90</td><td>f♯′′′/g♭′′′</td><td>F♯6/G♭6</td><td>70</td><td>1479.978</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>69</td><td>89</td><td>f′′′</td><td>F6</td><td>69</td><td>1396.913</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>68</td><td>88</td><td>e′′′</td><td>E6</td><td>68</td><td>1318.510</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>67</td><td>87</td><td>d♯′′′/e♭′′′</td><td>D♯6/E♭6</td><td>67</td><td>1244.508</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>66</td><td>86</td><td>d′′′</td><td>D6</td><td>66</td><td>1174.659</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>65</td><td>85</td><td>c♯′′′/d♭′′′</td><td>C♯6/D♭6</td><td>65</td><td>1108.731</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>64</td><td>84</td><td>c′′′ 3-line <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C6 <a href="/facts/Soprano_C/FdvRz0zL">Soprano C</a> (High C)</td><td>64</td><td>1046.502</td><td></td><td></td><td></td><td></td><td></td><td></td><td rowspan="25"></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>63</td><td>83</td><td>b′′</td><td>B5</td><td>63</td><td>987.7666</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>62</td><td>82</td><td>a♯′′/b♭′′</td><td>A♯5/B♭5</td><td>62</td><td>932.3275</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>61</td><td>81</td><td>a′′</td><td>A5</td><td>61</td><td>880.0000</td><td></td><td></td><td></td><td></td><td></td><td></td><td rowspan="25"></td><td></td><td></td><td></td><td></td></tr><tr><td>60</td><td>80</td><td>g♯′′/a♭′′</td><td>G♯5/A♭5</td><td>60</td><td>830.6094</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>59</td><td>79</td><td>g′′</td><td>G5</td><td>59</td><td>783.9909</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>58</td><td>78</td><td>f♯′′/g♭′′</td><td>F♯5/G♭5</td><td>58</td><td>739.9888</td><td></td><td></td><td></td><td></td><td></td><td></td><td rowspan="25"></td><td></td><td></td><td></td></tr><tr><td>57</td><td>77</td><td>f′′</td><td>F5</td><td>57</td><td>698.4565</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>56</td><td>76</td><td>e′′</td><td>E5</td><td>56</td><td>659.2551</td><td>E</td><td>E (5 String Viola)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>55</td><td>75</td><td>d♯′′/e♭′′</td><td>D♯5/E♭5</td><td>55</td><td>622.2540</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>54</td><td>74</td><td>d′′</td><td>D5</td><td>54</td><td>587.3295</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>53</td><td>73</td><td>c♯′′/d♭′′</td><td>C♯5/D♭5</td><td>53</td><td>554.3653</td><td></td><td></td><td></td><td></td><td></td><td></td><td rowspan="25"></td><td></td><td></td></tr><tr><td>52</td><td>72</td><td>c′′ 2-line <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C5 <a href="/facts/Tenor_C/FdvRz0zL">Tenor C</a></td><td>52</td><td>523.2511</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>51</td><td>71</td><td>b′</td><td>B4</td><td>51</td><td>493.8833</td><td></td><td></td><td></td><td></td><td>High B (Optional for 12 String Guitar)</td><td></td><td></td><td></td></tr><tr><td>50</td><td>70</td><td>a♯′/b♭′</td><td>A♯4/B♭4</td><td>50</td><td>466.1638</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>49</td><td>69</td><td>a′</td><td>A4 <a href="/facts/A440_(pitch_standard)/WIUBW1x2"> A440</a></td><td>49</td><td>440.0000</td><td>A</td><td>A</td><td></td><td></td><td>High A (Optional)</td><td>A</td><td rowspan="25"></td><td></td></tr><tr><td>48</td><td>68</td><td>g♯′/a♭′</td><td>G♯4/A♭4</td><td>48</td><td>415.3047</td><td></td><td></td><td></td><td>High Ab (12 Single String Bass)</td><td></td><td></td><td></td></tr><tr><td>47</td><td>67</td><td>g′</td><td>G4</td><td>47</td><td>391.9954</td><td></td><td></td><td></td><td></td><td></td><td>High G</td><td></td></tr><tr><td>46</td><td>66</td><td>f♯′/g♭′</td><td>F♯4/G♭4</td><td>46</td><td>369.9944</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>45</td><td>65</td><td>f′</td><td>F4</td><td>45</td><td>349.2282</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>44</td><td>64</td><td>e′</td><td>E4</td><td>44</td><td>329.6276</td><td></td><td></td><td>High E (5 String Cello)</td><td></td><td>High E</td><td>E</td><td rowspan="25"></td></tr><tr><td>43</td><td>63</td><td>d♯′/e♭′</td><td>D♯4/E♭4</td><td>43</td><td>311.1270</td><td></td><td></td><td></td><td>High Eb (12 String Single String Bass)</td><td></td><td></td></tr><tr><td>42</td><td>62</td><td>d′</td><td>D4</td><td>42</td><td>293.6648</td><td>D</td><td>D</td><td></td><td></td><td></td><td></td></tr><tr><td>41</td><td>61</td><td>c♯′/d♭′</td><td>C♯4/D♭4</td><td>41</td><td>277.1826</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>40</td><td>60</td><td>c′ 1-line <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C4 <a href="/facts/C_(musical_note)/FdvRz0zL">Middle C</a></td><td>40</td><td>261.6256</td><td></td><td></td><td></td><td></td><td></td><td>C</td></tr><tr><td>39</td><td>59</td><td>b</td><td>B3</td><td>39</td><td>246.9417</td><td></td><td></td><td></td><td></td><td>B</td><td></td><td></td></tr><tr><td>38</td><td>58</td><td>a♯/b♭</td><td>A♯3/B♭3</td><td>38</td><td>233.0819</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>37</td><td>57</td><td>a</td><td>A3</td><td>37</td><td>220.0000</td><td></td><td></td><td>A</td><td></td><td></td><td></td><td></td></tr><tr><td>36</td><td>56</td><td>g♯/a♭</td><td>G♯3/A♭3</td><td>36</td><td>207.6523</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>35</td><td>55</td><td>g</td><td>G3</td><td>35</td><td>195.9977</td><td>G</td><td>G</td><td></td><td></td><td>G</td><td>Low G</td><td></td><td></td></tr><tr><td>34</td><td>54</td><td>f♯/g♭</td><td>F♯3/G♭3</td><td>34</td><td>184.9972</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>33</td><td>53</td><td>f</td><td>F3</td><td>33</td><td>174.6141</td><td></td><td></td><td></td><td>High F (7 String)</td><td></td><td></td><td></td><td></td></tr><tr><td>32</td><td>52</td><td>e</td><td>E3</td><td>32</td><td>164.8138</td><td></td><td></td><td></td><td>High E (5th tuning, 5 String Bass)</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>31</td><td>51</td><td>d♯/e♭</td><td>D♯3/E♭3</td><td>31</td><td>155.5635</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>30</td><td>50</td><td>d</td><td>D3</td><td>30</td><td>146.8324</td><td></td><td></td><td>D</td><td></td><td>D</td><td></td><td></td><td></td><td></td></tr><tr><td>29</td><td>49</td><td>c♯/d♭</td><td>C♯3/D♭3</td><td>29</td><td>138.5913</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>28</td><td>48</td><td>c small <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C3</td><td>28</td><td>130.8128</td><td>C (5 String)</td><td>C</td><td></td><td>C (6 string)</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>27</td><td>47</td><td>B</td><td>B2</td><td>27</td><td>123.4708</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>26</td><td>46</td><td>A♯/B♭</td><td>A♯2/B♭2</td><td>26</td><td>116.5409</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>25</td><td>45</td><td>A</td><td>A2</td><td>25</td><td>110.0000</td><td></td><td></td><td></td><td>A (5th tuning Upright)</td><td>A</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>24</td><td>44</td><td>G♯/A♭</td><td>G♯2/A♭2</td><td>24</td><td>103.8262</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>23</td><td>43</td><td>G</td><td>G2</td><td>23</td><td>97.99886</td><td></td><td></td><td>G</td><td>G</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>22</td><td>42</td><td>F♯/G♭</td><td>F♯2/G♭2</td><td>22</td><td>92.49861</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>21</td><td>41</td><td>F</td><td>F2</td><td>21</td><td>87.30706</td><td>Low F (6 String)</td><td>Low F (6 String)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>20</td><td>40</td><td>E</td><td>E2</td><td>20</td><td>82.40689</td><td></td><td></td><td></td><td></td><td>Low E</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>19</td><td>39</td><td>D♯/E♭</td><td>D♯2/E♭2</td><td>19</td><td>77.78175</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>18</td><td>38</td><td>D</td><td>D2</td><td>18</td><td>73.41619</td><td></td><td></td><td></td><td>D</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>17</td><td>37</td><td>C♯/D♭</td><td>C♯2/D♭2</td><td>17</td><td>69.29566</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>16</td><td>36</td><td>C great <a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C2 <a href="/facts/Deep_C/FdvRz0zL">Deep C</a></td><td>16</td><td>65.40639</td><td></td><td></td><td>C</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>15</td><td>35</td><td>B͵</td><td>B1</td><td>15</td><td>61.73541</td><td></td><td></td><td></td><td></td><td>Low B (7 string)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>14</td><td>34</td><td>A♯͵/B♭͵</td><td>A♯1/B♭1</td><td>14</td><td>58.27047</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>13</td><td>33</td><td>A͵</td><td>A1</td><td>13</td><td>55.00000</td><td></td><td></td><td></td><td>A</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>12</td><td>32</td><td>G♯͵/A♭͵</td><td>G♯1/A♭1</td><td>12</td><td>51.91309</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>11</td><td>31</td><td>G͵</td><td>G1</td><td>11</td><td>48.99943</td><td></td><td></td><td></td><td>G (5th tuning Upright)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>10</td><td>30</td><td>F♯͵/G♭͵</td><td>F♯1/G♭1</td><td>10</td><td>46.24930</td><td></td><td></td><td></td><td></td><td>Low F♯ (8 string)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>9</td><td>29</td><td>F͵</td><td>F1</td><td>9</td><td>43.65353</td><td></td><td></td><td>Low F (6 String)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>8</td><td>28</td><td>E͵</td><td>E1</td><td>8</td><td>41.20344</td><td></td><td></td><td></td><td>E</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>7</td><td>27</td><td>D♯͵/E♭͵</td><td>D♯1/E♭1</td><td>7</td><td>38.89087</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>6</td><td>26</td><td>D͵</td><td>D1</td><td>6</td><td>36.70810</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>5</td><td>25</td><td>C♯͵/D♭͵</td><td>C♯1/D♭1</td><td>5</td><td>34.64783</td><td></td><td></td><td></td><td></td><td>Low C#(9 String)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>4</td><td>24</td><td>C͵ contra-<a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C1 Pedal C</td><td>4</td><td>32.70320</td><td></td><td></td><td></td><td>C (Upright Extension or 5th tuning)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>3</td><td>23</td><td>B͵͵</td><td>B0</td><td>3</td><td>30.86771</td><td></td><td></td><td></td><td>B (5 string)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2</td><td>22</td><td>A♯͵͵/B♭͵͵</td><td>A♯0/B♭0</td><td>2</td><td>29.13524</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>1</td><td>21</td><td>A͵͵</td><td>A0</td><td>1</td><td>27.50000</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>97</td><td>20</td><td>G♯͵͵/A♭͵͵</td><td>G♯0/A♭0</td><td>0</td><td>25.95654</td><td></td><td></td><td></td><td></td><td>Low G# (10 String)</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>96</td><td>19</td><td>G͵͵</td><td>G0</td><td>−1</td><td>24.49971</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>95</td><td>18</td><td>F♯͵͵/G♭͵͵</td><td>F♯0/G♭0</td><td>−2</td><td>23.12465</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>94</td><td>17</td><td>F͵͵</td><td>F0</td><td>−3</td><td>21.82676</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>93</td><td>16</td><td>E͵͵</td><td>E0</td><td>−4</td><td>20.60172</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>92</td><td>15</td><td>D♯͵͵/E♭͵͵</td><td>D♯0/E♭0</td><td>−5</td><td>19.44544</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>91</td><td>14</td><td>D͵͵</td><td>D0</td><td>−6</td><td>18.35405</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>90</td><td>13</td><td>C♯͵͵/D♭͵͵</td><td>C♯0/D♭0</td><td>−7</td><td>17.32391</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>89</td><td>12</td><td>C͵͵ sub-contra-<a href="/facts/Octave/RA4gWvkV">octave</a></td><td>C0 Double Pedal C</td><td>−8</td><td>16.35160</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody></table> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Piano_tuning/De3YdeAV">Piano tuning</a></li> <li><a href="/facts/Scientific_pitch_notation/rq2QnnyE">Scientific pitch notation</a></li> <li><a href="/facts/Music_and_mathematics/MncsslXb">Music and mathematics</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Weisstein, Eric. "Equal Temperament -- from Eric Weisstein's Treasure Trove of Music". Eric Weisstein's Treasure Trove of Music. Archived from the original on 2019-06-14. Retrieved 2019-12-26. <a href="http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html" target="_blank">http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Nov, Yuval. "Explaining the Equal Temperament". www.yuvalnov.org. Archived from the original on 2019-05-26. Retrieved 2019-12-26. <a href="https://www.yuvalnov.org/temperament/" target="_blank">https://www.yuvalnov.org/temperament/</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Weisstein, Eric. "Equal Temperament -- from Eric Weisstein's Treasure Trove of Music". Eric Weisstein's Treasure Trove of Music. Archived from the original on 2019-06-14. Retrieved 2019-12-26. <a href="http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html" target="_blank">http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Nov, Yuval. "Explaining the Equal Temperament". www.yuvalnov.org. Archived from the original on 2019-05-26. Retrieved 2019-12-26. <a href="https://www.yuvalnov.org/temperament/" target="_blank">https://www.yuvalnov.org/temperament/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Citak, Ray. "Information on Piano Tuning". www.pianotechnician.com. Archived from the original on 2019-02-26. Retrieved 2019-12-26. <a href="https://www.pianotechnician.com/tuning.html" target="_blank">https://www.pianotechnician.com/tuning.html</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Weisstein, Eric. "Equal Temperament -- from Eric Weisstein's Treasure Trove of Music". Eric Weisstein's Treasure Trove of Music. Archived from the original on 2019-06-14. Retrieved 2019-12-26. <a href="http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html" target="_blank">http://www.ericweisstein.com/encyclopedias/music/EqualTemperament.html</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Wills, Oscar; King, Rosie (2018-09-15). "Australian behind world's grandest piano". ABC News. Australia. Archived from the original on 2019-06-11. Retrieved 2019-12-26. <a href="https://www.abc.net.au/news/2018-09-15/worlds-first-108-key-concert-grand-piano-built-by-australian/10246340" target="_blank">https://www.abc.net.au/news/2018-09-15/worlds-first-108-key-concert-grand-piano-built-by-australian/10246340</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Goss, Clint (2019-02-18). "Octave Notation". Flutopedia. Archived from the original on 2019-05-12. Retrieved 2019-12-26. <a href="http://www.flutopedia.com/octave_notation.htm" target="_blank">http://www.flutopedia.com/octave_notation.htm</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Goss, Clint (2019-02-18). "Octave Notation". Flutopedia. Archived from the original on 2019-05-12. Retrieved 2019-12-26. <a href="http://www.flutopedia.com/octave_notation.htm" target="_blank">http://www.flutopedia.com/octave_notation.htm</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>Suits, Bryan (1998). "Frequencies of Musical Notes, A4 = 440 Hz". Physics of Music — Notes. Michigan Tech University. Archived from the original on 2019-12-16. Retrieved 2019-12-26. <a href="https://pages.mtu.edu/~suits/notefreqs.html" target="_blank">https://pages.mtu.edu/~suits/notefreqs.html</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> </ol>