Altitude and Barometric Pressure
Altitude Above Seal Level Temperature Barometric Pressure Atmospheric Pressure
Feet Miles Meters °F °C In. Hg mm Hg PSI Kg/sq cm kPa
0 – 0 59 15 29.92 760 14.696 1.0333 101.33
500 – 153 57 14 29.38 746.3 14.43 1.015 99.49
1000 – 305 55 13 28.86 733 14.16 0.996 97.63
1500 – 458 54 12 28.33 719.6 13.91 0.978 95.91
2000 – 610 52 11 27.82 706.6 13.66 0.96 94.19
2500 – 763 50 10 27.32 693.9 13.41 0.943 92.46
3000 – 915 48 9 26.82 681.2 13.17 0.926 90.81
3500 – 1068 47 8 26.33 668.8 12.93 0.909 89.15
4000 – 1220 45 7 25.84 656.3 12.69 0.892 87.49
4500 – 1373 43 6 25.37 644.4 12.46 0.876 85.91
5000 0.95 1526 41 5 24.9 632.5 12.23 0.86 84.33
6000 1.1 1831 38 3 23.99 609.3 11.78 0.828 81.22
7000 1.3 2136 34 1 23.1 586.7 11.34 0.797 78.19
8000 1.5 2441 31 –1 22.23 564.6 10.91 0.767 75.22
9000 1.7 2746 27 –3 21.39 543.3 10.5 0.738 72.4
10,000 1.9 3050 23 –5 20.58 522.7 10.1 0.71 69.64
15,000 2.8 4577 6 –14 16.89 429 8.29 0.583 57.16
20,000 3.8 6102 –12 –24 13.76 349.5 6.76 0.475 46.61
25,000 4.7 7628 –30 –34 11.12 282.4 5.46 0.384 37.65
30,000 5.7 9153 –48 –44 8.903 226.1 4.37 0.307 30.13
35,000 6.6 10,679 –66 –54 7.06 179.3 3.47 0.244 23.93
40,000 7.6 12,204 –70 –57 5.558 141.2 2.73 0.192 18.82
45,000 8.5 13,730 –70 –57 4.375 111.1 2.15 0.151 14.82
50,000 9.5 15,255 –70 –57 3.444 87.5 1.69 0.119 11.65
55,000 10.4 16,781 –70 –57 2.712 68.9 1.33 0.0935 9.17
60,000 11.4 18,306 –70 –57 2.135 54.2 1.05 0.0738 7.24
70,000 13.3 21,357 –67 –55 1.325 33.7 0.651 0.651 4.49
80,000 15.2 24,408 –62 –52 0.8273 21 0.406 0.406 2.8
90,000 17.1 27,459 –57 –59 0.52 13.2 0.255 0.255 1.76
100,000 18.9 30,510 –51 –46 0.329 8.36 0.162 0.162 1.12
Glossary, Reference Charts, and Conversions
Page 1D-6 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018
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