---
title: "Millibars to Bars — mbar to bar converter"
description: "1 millibar = 0.001 bars. Convert millibars to bars with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/millibars-to-bar/
site: "At One Place"
---

# Millibars to bars

**1 millibar in bars: 1 mbar = 0.001 bar**

bar = mbar × 0.001

To convert millibars to bars, multiply by 0.001. The table below gives the values people look up most often, and the converter works for any number.

## Millibars to bars table

*Common millibar values converted to bars.*

| Millibars | Bars |
| --- | --- |
| 1 mbar | 0.001 |
| 2 mbar | 0.002 |
| 3 mbar | 0.003 |
| 4 mbar | 0.004 |
| 5 mbar | 0.005 |
| 10 mbar | 0.01 |
| 15 mbar | 0.015 |
| 20 mbar | 0.02 |
| 25 mbar | 0.025 |
| 30 mbar | 0.03 |
| 40 mbar | 0.04 |
| 50 mbar | 0.05 |
| 75 mbar | 0.075 |
| 100 mbar | 0.1 |
| 250 mbar | 0.25 |
| 500 mbar | 0.5 |
| 1,000 mbar | 1 |

## How the conversion works

The relationship is bar = mbar × 0.001. Both units measure pressure, so the conversion is a fixed factor that never changes.

## Common questions

### How many bars are in one millibar?

One millibar equals 0.001 bars. bar = mbar × 0.001.

### How do you convert millibars to bars?

Use bar = mbar × 0.001. So 10 mbar is 0.01 bar.

### How many millibars are in one bar?

One bar equals 1,000 millibars, which is the reverse of the conversion above.

## Related pages

- [Bars to Millibars](https://atoneplace.net/convert/bar-to-millibars/)
- [Millibars to Pascals](https://atoneplace.net/convert/millibars-to-pascals/)
- [Millibars to Kilopascals](https://atoneplace.net/convert/millibars-to-kilopascals/)
- [Millibars to Standard atmospheres](https://atoneplace.net/convert/millibars-to-atmospheres/)
- [Millibars to Pounds per square inch](https://atoneplace.net/convert/millibars-to-psi/)
- [Millibars to Torrs](https://atoneplace.net/convert/millibars-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/)