Bar to Millibar Converter
Pressure · unit-converter
Convert Bar to Millibar with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About Bar
The bar is 100,000 Pa. It is convenient for industrial and approximate atmospheric pressures (1 bar ≈ 1 atm).
About Millibar
Millibar (mbar) equals 100 Pa and is numerically identical to hPa. It appears in weather and legacy instrument labels.
How to convert bar to millibar (mbar)
1 bar equals 1000 millibar in this tool (via pascal):
1 bar = (100000 Pa ÷ 100 Pa) mbar = 1000 mbar
Each bar carries 100000 Pa and each millibar 100 Pa, so one bar equals 100000 ÷ 100 mbar.
Let p(bar) be pressure in Bar (bar), and p(mbar) in Millibar (mbar). Then:
p(mbar) = p(bar) × (100000 / 100)
Equivalently, divide by how many bar fit into one mbar (Pa per mbar divided by Pa per bar):
p(mbar) = p(bar) ÷ 0.001
Examples
Example #1: Convert 1 bar to millibar
1 bar = 1 bar × (100000/100) mbar = 1000 mbar
1 bar = 1 bar ÷ 0.001 = 1000 mbar
1 bar × (100,000/100) = 1,000.000000 mbar
Example #2: Convert 10 bar to millibar
10 bar = 10 bar × (100000/100) mbar = 10000 mbar
10 bar = 10 bar ÷ 0.001 = 10000 mbar
10 bar × (100,000/100) = 10,000.000000 mbar
Summary
To convert Bar to Millibar, multiply the value in bar by (100000 Pa per bar) / (100 Pa per mbar). Equivalently: value_mbar = value_bar × (100000 / 100). Numerically, 1 bar equals 1000 mbar.
Relationship context
Both Bar and Millibar are converted by fixed multiples of the pascal. Multiplying by (Pa per bar) ÷ (Pa per mbar) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Bar (bar) | Millibar (mbar) |
|---|---|
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| Bar (bar) | Millibar (mbar) |
|---|---|
| 10 | 10,000 |
| 20 | 20,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 60 | 60,000 |
| 70 | 70,000 |
| 80 | 80,000 |
| 90 | 90,000 |
| 100 | 100,000 |