Millibar to Bar Converter
Pressure · unit-converter
Convert Millibar to Bar 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 Millibar
Millibar (mbar) equals 100 Pa and is numerically identical to hPa. It appears in weather and legacy instrument labels.
About Bar
The bar is 100,000 Pa. It is convenient for industrial and approximate atmospheric pressures (1 bar ≈ 1 atm).
How to convert millibar (mbar) to bar
1 millibar equals 0.001 bar in this tool (via pascal):
1 mbar = (100 Pa ÷ 100000 Pa) bar = 0.001 bar
Each millibar carries 100 Pa and each bar 100000 Pa, so one mbar equals 100 ÷ 100000 bar.
Let p(mbar) be pressure in Millibar (mbar), and p(bar) in Bar (bar). Then:
p(bar) = p(mbar) × (100 / 100000)
Equivalently, divide by how many mbar fit into one bar (Pa per bar divided by Pa per mbar):
p(bar) = p(mbar) ÷ 1000
Examples
Example #1: Convert 1 mbar to bar
1 mbar = 1 mbar × (100/100000) bar = 0.001 bar
1 mbar = 1 mbar ÷ 1000 = 0.001 bar
1 mbar × (100/100,000) = 0.001000 bar
Example #2: Convert 10 mbar to bar
10 mbar = 10 mbar × (100/100000) bar = 0.01 bar
10 mbar = 10 mbar ÷ 1000 = 0.01 bar
10 mbar × (100/100,000) = 0.010000 bar
Summary
To convert Millibar to Bar, multiply the value in mbar by (100 Pa per mbar) / (100000 Pa per bar). Equivalently: value_bar = value_mbar × (100 / 100000). Numerically, 1 mbar equals 0.001 bar.
Relationship context
Both Millibar and Bar are converted by fixed multiples of the pascal. Multiplying by (Pa per mbar) ÷ (Pa per bar) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Millibar (mbar) | Bar (bar) |
|---|---|
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| Millibar (mbar) | Bar (bar) |
|---|---|
| 10 | 0.01 |
| 20 | 0.02 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 60 | 0.06 |
| 70 | 0.07 |
| 80 | 0.08 |
| 90 | 0.09 |
| 100 | 0.1 |