Convert millimeter of mercurys to inch of mercurys

1 mmHg = 0.0393700787402 inHg — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.

0.039 370 078 740 2inHg
≈ Rounded to 12 s.f. 1 mmHg ≈ 0.039 370 078 740 2 inHg
As a fraction: 5/127
More converter tools

Readable results

Ranges, ± tolerances, feet/inches and clock durations work in the value field.

Unit picker

Export this result

1 mmHg = 0.0393700787402 inHg
Show this value in all 27 pressure & stress units
  • Gigapascals GPa 0.000 000 133 322 387 415
  • Megapascals MPa 0.000 133 322 387 415
  • Kilopascals kPa 0.133 322 387 415
  • Hectopascals hPa 1.333 223 874 15
  • Pascals Pa 133.322 387 415
  • Millipascals mPa 133 322.387 415
  • Micropascals µPa 133 322 387.415
  • Bars bar 0.001 333 223 874 15
  • Millibars mbar 1.333 223 874 15
  • Atmosphere (standard)s atm 0.001 315 789 661 14
  • Atmosphere (technical)s at 0.001 359 51
  • Torrs Torr 1.000 000 142 47
  • Millitorrs mTorr 1000.000 142 47
  • Millimeter of mercurys mmHg 1
  • Centimeter of mercurys cmHg 0.1
  • Inch of mercurys inHg 0.039 370 078 740 2
  • Millimeter of waters mmH₂O 13.5951
  • Centimeter of waters cmH₂O 1.359 51
  • Inch of waters inH₂O 0.535 240 157 48
  • Foot of waters ftH₂O 0.044 603 346 456 7
  • Pound per square inchs psi 0.019 336 777 459 5
  • Kilopound per square inchs ksi 0.000 019 336 777 459 5
  • Pound per square foots psf 2.784 495 954 16
  • Kilogram-force per square centimeters kgf/cm² 0.001 359 51
  • Kilogram-force per square meters kgf/m² 13.5951
  • Newton per square millimeters N/mm² 0.000 133 322 387 415
  • Dyne per square centimeters dyn/cm² 1333.223 874 15

Every row is Millimeter of mercury (mmHg) converted through the pascal, in exact rational arithmetic.

How to convert millimeter of mercurys to inch of mercurys

Multiply the number of millimeter of mercurys by 0.0393700787402 to get inch of mercurys.

Millimeter of mercury: The conventional mmHg, exactly 133.322 387 415 Pa. Blood pressure uses this.

Inch of mercury: US altimeter settings and barometric pressure.

Millimeter of mercury to Inch of mercury conversion table

Millimeter of mercurys (mmHg) Inch of mercurys (inHg)
1 mmHg 0.039 370 079
2 mmHg 0.078 740 157
3 mmHg 0.118 110 24
5 mmHg 0.196 850 39
10 mmHg 0.393 700 79
20 mmHg 0.787 401 57
25 mmHg 0.984 251 97
50 mmHg 1.968 503 9
100 mmHg 3.937 007 9
250 mmHg 9.842 519 7
500 mmHg 19.685 039
1000 mmHg 39.370 079

Inch of mercury to Millimeter of mercury conversion table

Inch of mercurys (inHg) Millimeter of mercurys (mmHg)
1 inHg 25.4
2 inHg 50.8
3 inHg 76.2
5 inHg 127
10 inHg 254
20 inHg 508
25 inHg 635
50 inHg 1270
100 inHg 2540
250 inHg 6350
500 inHg 12 700
1000 inHg 25 400

Frequently asked

How many inch of mercurys are in a millimeter of mercury?

One millimeter of mercury equals 0.03937007874 inch of mercurys (mmHg → inHg). That figure is exact, not rounded.

How do you convert millimeter of mercurys to inch of mercurys?

Multiply the number of millimeter of mercurys by 0.0393700787402 to get inch of mercurys.

What is 1 inHg in millimeter of mercurys?

One inch of mercury is 25.4 millimeter of mercurys.

What is 10 mmHg in inHg?

10 mmHg = 0.393 700 79 inHg.

What exactly is a millimeter of mercury?

The conventional mmHg, exactly 133.322 387 415 Pa. Blood pressure uses this.

What exactly is a inch of mercury?

US altimeter settings and barometric pressure.

Related conversions

Settings

Theme

System follows your operating system and changes with it.

Text size
High contrast

Maximises text and border contrast and removes the grid background.

Graph-paper background

Round to
Notation
Thousands separators
Decimal mark
Nearest fraction

Shows the result as the nearest tape-measure fraction, with the error it costs.


Accessibility & interaction
Reduce motion Stops interface animations even when the operating system does not.
Underline links Keeps links visually distinct without relying on colour.
Larger touch targets Makes buttons and form controls easier to tap.
Shorter reading lines Limits article width for easier scanning.
Monochrome display Removes colour as an information cue.
Always-visible focus Makes the keyboard focus ring persistent and stronger.
Verbose screen-reader results Announces the complete conversion equation.
Sticky action bars Keeps converter and calculator actions within reach.
Select values on focus Replaces a value immediately when you start typing.
Left-handed mobile layout Moves key mobile actions toward the left thumb.

Your data

Settings, recent conversions and favourites live in this browser only. Nothing is sent anywhere.

Offline library