Convert Millibar to Bar

Convert Millibar to Bar by dividing by 1,000—useful for aligning atmospheric readings with industrial bar units.

From

Enter Value

How to Convert Millibar to Bar

To convert Millibar to Bar, divide mbar by 1,000 because 1 bar = 1,000 mbar.

Conversion Formula:

value / 1000

Understanding the Conversion

Millibar to Bar shifts atmospheric-style units into the bar scale used in industry and diving. Divide mbar by 1,000. For example, 1,013.25 mbar becomes 1.01325 bar (atmosphere). The relationship is exact and reversible.

Conversion Examples

Example: Convert 1,013.25 mbar to bar

Step 1: 1,013.25 ÷ 1,000 = 1.01325.
Step 2: Result is 1.01325 bar.
Step 3: Atmospheric reference.

1,013.25 mbar = 1.01325 bar

Sea-level pressure.

Example: Convert 500 mbar to bar

Step 1: 500 ÷ 1,000 = 0.5.
Step 2: Result is 0.5 bar.
Step 3: Midrange example.

500 mbar = 0.5 bar

Half an atmosphere approx.

Example: Convert 2000 mbar to bar

Step 1: 2000 ÷ 1,000 = 2.
Step 2: Result is 2 bar.
Step 3: Higher pressure example.

2000 mbar = 2 bar

Higher-than-atmospheric.

Conversion Formula

Bar is one thousand millibar. Dividing mbar by 1,000 moves to bar.

Conversion Chart

Millibar	Bar
250	0.25
500	0.5
750	0.75
1000	1
1013.25	1.01325
1500	1.5
2000	2
5000	5
8000	8
12000	12

Quick Conversion Tip

Move decimal three places left: 980 mbar → 0.980 bar.

Unit Definitions

Millibar (mbar)

Atmospheric unit.

1 mbar = 0.001 bar = 0.1 kPa = 100 Pa.

Bar (bar)

Metric-adjacent pressure unit.

bar to mbar multiply by 1,000; bar to kPa multiply by 100; bar to psi multiply by 14.5038.

Common Use Cases

Weather/aviation to bar for industrial comparison
Diving references needing bar
Process data dual-labeled mbar/bar
Education on scaling atmospheric units

Frequently Asked Questions

Why convert to bar?

Bar is common in industrial specs and diving; converting aligns atmospheric data to those contexts.

Is the factor exact?

Yes. 1 bar = 1,000 mbar exactly.

How to go back?

Multiply bar by 1,000 to return to mbar.