---
title: "Inches of mercury to Torrs — inHg to Torr converter"
description: "1 inch of mercury = 25.40001 torrs. Convert inches of mercury to torrs with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/inches-of-mercury-to-torr/
site: "At One Place"
---

# Inches of mercury to torrs

**1 inch of mercury in torrs: 1 inHg = 25.40001 Torr**

Torr = inHg × 25.40000632

To convert inches of mercury to torrs, multiply by 25.40000632. The table below gives the values people look up most often, and the converter works for any number.

## Inches of mercury to torrs table

*Common inch of mercury values converted to torrs.*

| Inches of mercury | Torrs |
| --- | --- |
| 1 inHg | 25.40001 |
| 2 inHg | 50.80001 |
| 3 inHg | 76.20002 |
| 4 inHg | 101.6 |
| 5 inHg | 127 |
| 10 inHg | 254.0001 |
| 15 inHg | 381.0001 |
| 20 inHg | 508.0001 |
| 25 inHg | 635.0002 |
| 30 inHg | 762.0002 |
| 40 inHg | 1,016.0003 |
| 50 inHg | 1,270.0003 |
| 75 inHg | 1,905.0005 |
| 100 inHg | 2,540.0006 |
| 250 inHg | 6,350.0016 |
| 500 inHg | 12,700.003 |
| 1,000 inHg | 25,400.006 |

## How the conversion works

The relationship is Torr = inHg × 25.40000632. Both units measure pressure, so the conversion is a fixed factor that never changes.

## Common questions

### How many torrs are in one inch of mercury?

One inch of mercury equals 25.40001 torrs. Torr = inHg × 25.40000632.

### How do you convert inches of mercury to torrs?

Use Torr = inHg × 25.40000632. So 10 inHg is 254.0001 Torr.

### How many inches of mercury are in one torr?

One torr equals 0.03937 inches of mercury, which is the reverse of the conversion above.

## Related pages

- [Torrs to Inches of mercury](https://atoneplace.net/convert/torr-to-inches-of-mercury/)
- [Inches of mercury to Pascals](https://atoneplace.net/convert/inches-of-mercury-to-pascals/)
- [Inches of mercury to Kilopascals](https://atoneplace.net/convert/inches-of-mercury-to-kilopascals/)
- [Inches of mercury to Bars](https://atoneplace.net/convert/inches-of-mercury-to-bar/)
- [Inches of mercury to Standard atmospheres](https://atoneplace.net/convert/inches-of-mercury-to-atmospheres/)
- [Inches of mercury to Pounds per square inch](https://atoneplace.net/convert/inches-of-mercury-to-psi/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)