mmHg to Torr
Convert mmhg to torr instantly. 1 mmHg = 1.0000001425 Torr. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert mmhg to torr
To convert mmhg to torr, multiply by 1.0000001425. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
Torr = mmHg × 1.0000001425
mmHg to Torr conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| mmHg | Torr |
|---|---|
| 1 mmHg | 1 Torr |
| 2 mmHg | 2 Torr |
| 3 mmHg | 3 Torr |
| 5 mmHg | 5.000001 Torr |
| 10 mmHg | 10.000001 Torr |
| 20 mmHg | 20.000003 Torr |
| 25 mmHg | 25.000004 Torr |
| 50 mmHg | 50.000007 Torr |
| 100 mmHg | 100.000014 Torr |
| 500 mmHg | 500.000071 Torr |
| 1,000 mmHg | 1,000 Torr |
What is a mmhg?
Millimetres of mercury, still the clinical unit for blood pressure.
What is a torr?
One 760th of an atmosphere, near-identical to a millimetre of mercury.
The formula
Torr = mmHg × 1.0000001425
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the mmHg to Torr
- Type the number of mmhg you want to convert.
- Read the result in torr straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked torr to mmhg page.
mmHg to Torr — frequently asked questions
How many torr are in a mmhg?
One mmhg equals 1.0000001425 Torr. Torr = mmHg × 1.0000001425
What is the formula to convert mmhg to torr?
The formula is Torr = mmHg × 1.0000001425. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert torr back to mmhg?
Divide instead of multiplying: one torr is 0.9999998575 mmHg. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this mmhg to torr free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the mmhg to torr.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error