• hPa   mmHg
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Rounding Mode:

The hectopascal (hPa) is a commonly used unit for measuring atmospheric pressure, especially in meteorology. One hPa is equivalent to 100 pascals, making it a preferred measurement over pascals due to the convenient scale. Interestingly, 1 hPa is also equivalent to 1 millibar, a unit that was widely used before the adoption of the hectopascal. This equivalence makes it easy for transitioning instruments and readings in weather maps and reports.

Hectopascals play a crucial role in understanding atmospheric conditions, such as weather forecasting and studying phenomena like hurricanes or cyclones. Typically, sea-level pressure is around 1013 hPa, and deviations from this can indicate changing weather patterns, with lower pressures often associated with storm systems. This connection makes the hPa unit vital for predicting and understanding weather events globally.

Did you know?

The millimeter of mercury (mmHg) is a unit of pressure traditionally used in medicine and meteorology, and its history dates back to the barometer invention by Evangelista Torricelli in 1643. Often, it is associated with measuring blood pressure and intraocular pressure, representing the pressure exerted by a column of mercury precisely 1 millimeter high. This fascinating unit highlights the interplay of physics and medicine, reflecting both the force of blood circulating against vessel walls and the atmospheric pressure’s effects on our weather systems.

Interestingly, mmHg is one of the few units still officially sanctioned for use with SI (International System of Units) under specific legal and medical contexts, underscoring its importance over centuries. Despite the global shift towards using Pascals for pressure, mmHg remains ingrained in clinical settings because of its historical usage and direct relation to human physiology. Its origins and continued use illustrate how historical scientific instruments still influence modern practices.

> Hectopascals to Millimeters of mercury Conversion Table

Hectopascals Millimeters of mercury
0 hPa 0 mmHg
10 hPa 7.50064 mmHg
20 hPa 15.00128 mmHg
30 hPa 22.50191 mmHg
40 hPa 30.00255 mmHg
50 hPa 37.50319 mmHg
60 hPa 45.00383 mmHg
70 hPa 52.50446 mmHg
80 hPa 60.0051 mmHg
90 hPa 67.50574 mmHg
100 hPa 75.00638 mmHg
110 hPa 82.50701 mmHg
120 hPa 90.00765 mmHg
130 hPa 97.50829 mmHg
140 hPa 105.00893 mmHg
150 hPa 112.50956 mmHg
160 hPa 120.0102 mmHg
170 hPa 127.51084 mmHg
180 hPa 135.01148 mmHg
190 hPa 142.51211 mmHg
200 hPa 150.01275 mmHg
210 hPa 157.51339 mmHg
220 hPa 165.01403 mmHg
230 hPa 172.51466 mmHg
240 hPa 180.0153 mmHg
250 hPa 187.51594 mmHg
260 hPa 195.01658 mmHg
270 hPa 202.51721 mmHg
280 hPa 210.01785 mmHg
290 hPa 217.51849 mmHg
300 hPa 225.01913 mmHg
310 hPa 232.51976 mmHg
320 hPa 240.0204 mmHg
330 hPa 247.52104 mmHg
340 hPa 255.02168 mmHg
350 hPa 262.52231 mmHg
360 hPa 270.02295 mmHg
370 hPa 277.52359 mmHg
380 hPa 285.02423 mmHg
390 hPa 292.52486 mmHg
400 hPa 300.0255 mmHg
410 hPa 307.52614 mmHg
420 hPa 315.02678 mmHg
430 hPa 322.52741 mmHg
440 hPa 330.02805 mmHg
450 hPa 337.52869 mmHg
460 hPa 345.02933 mmHg
470 hPa 352.52997 mmHg
480 hPa 360.0306 mmHg
490 hPa 367.53124 mmHg
500 hPa 375.03188 mmHg
510 hPa 382.53252 mmHg
520 hPa 390.03315 mmHg
530 hPa 397.53379 mmHg
540 hPa 405.03443 mmHg
550 hPa 412.53507 mmHg
560 hPa 420.0357 mmHg
570 hPa 427.53634 mmHg
580 hPa 435.03698 mmHg
590 hPa 442.53762 mmHg
600 hPa 450.03825 mmHg
610 hPa 457.53889 mmHg
620 hPa 465.03953 mmHg
630 hPa 472.54017 mmHg
640 hPa 480.0408 mmHg
650 hPa 487.54144 mmHg
660 hPa 495.04208 mmHg
670 hPa 502.54272 mmHg
680 hPa 510.04335 mmHg
690 hPa 517.54399 mmHg
700 hPa 525.04463 mmHg
710 hPa 532.54527 mmHg
720 hPa 540.0459 mmHg
730 hPa 547.54654 mmHg
740 hPa 555.04718 mmHg
750 hPa 562.54782 mmHg
760 hPa 570.04845 mmHg
770 hPa 577.54909 mmHg
780 hPa 585.04973 mmHg
790 hPa 592.55037 mmHg
800 hPa 600.051 mmHg
810 hPa 607.55164 mmHg
820 hPa 615.05228 mmHg
830 hPa 622.55292 mmHg
840 hPa 630.05355 mmHg
850 hPa 637.55419 mmHg
860 hPa 645.05483 mmHg
870 hPa 652.55547 mmHg
880 hPa 660.0561 mmHg
890 hPa 667.55674 mmHg
900 hPa 675.05738 mmHg
910 hPa 682.55802 mmHg
920 hPa 690.05865 mmHg
930 hPa 697.55929 mmHg
940 hPa 705.05993 mmHg
950 hPa 712.56057 mmHg
960 hPa 720.06121 mmHg
970 hPa 727.56184 mmHg
980 hPa 735.06248 mmHg
990 hPa 742.56312 mmHg
1000 hPa 750.06376 mmHg