---
title: "Inches of mercury to Kilopascals — inHg to kPa converter"
description: "1 inch of mercury = 3.386389 kilopascals. Convert inches of mercury to kilopascals with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/inches-of-mercury-to-kilopascals/
site: "At One Place"
---

# Inches of mercury to kilopascals

**1 inch of mercury in kilopascals: 1 inHg = 3.386389 kPa**

kPa = inHg × 3.386389

To convert inches of mercury to kilopascals, multiply by 3.386389. The table below gives the values people look up most often, and the converter works for any number.

## Inches of mercury to kilopascals table

*Common inch of mercury values converted to kilopascals.*

| Inches of mercury | Kilopascals |
| --- | --- |
| 1 inHg | 3.386389 |
| 2 inHg | 6.772778 |
| 3 inHg | 10.15917 |
| 4 inHg | 13.54556 |
| 5 inHg | 16.93194 |
| 10 inHg | 33.86389 |
| 15 inHg | 50.79583 |
| 20 inHg | 67.72778 |
| 25 inHg | 84.65973 |
| 30 inHg | 101.5917 |
| 40 inHg | 135.4556 |
| 50 inHg | 169.3195 |
| 75 inHg | 253.9792 |
| 100 inHg | 338.6389 |
| 250 inHg | 846.5973 |
| 500 inHg | 1,693.1945 |
| 1,000 inHg | 3,386.389 |

## How the conversion works

The relationship is kPa = inHg × 3.386389. Both units measure pressure, so the conversion is a fixed factor that never changes.

## Common questions

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

One inch of mercury equals 3.386389 kilopascals. kPa = inHg × 3.386389.

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

Use kPa = inHg × 3.386389. So 10 inHg is 33.86389 kPa.

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

One kilopascal equals 0.2953 inches of mercury, which is the reverse of the conversion above.

## Related pages

- [Kilopascals to Inches of mercury](https://atoneplace.net/convert/kilopascals-to-inches-of-mercury/)
- [Inches of mercury to Pascals](https://atoneplace.net/convert/inches-of-mercury-to-pascals/)
- [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/)
- [Inches of mercury to Torrs](https://atoneplace.net/convert/inches-of-mercury-to-torr/)

## 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/)