Standard atmospheres to Millibar
Convert standard atmospheres to millibar (atm to mbar). 1 atm = 1,013.25 mbar. Use the calculator, formula and conversion table.
How to convert standard atmospheres to millibar
Multiply the amount in standard atmospheres by 1,013.25 to get millibar. The displayed factor and results are rounded to 12 significant digits.
mbar = atm × 1,013.25Worked example
1 atm = 1,013.25 mbar. Change the amount in the calculator above to use your own value.
Units and assumptions
Uses pascals as the base unit. One standard atmosphere is 101,325 Pa and one bar is 100,000 Pa. Results are rounded for display.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Standard atmospheres to Millibar table
| Standard atmospheres (atm) | Millibar (mbar) |
|---|---|
| 0 | 0 |
| 1 | 1,013.25 |
| 5 | 5,066.25 |
| 10 | 10,132.5 |
| 25 | 25,331.25 |
| 100 | 101,325 |
| 1,000 | 1,013,250 |
About this conversion
What is the formula for standard atmospheres to millibar?
mbar = atm × 1,013.25. Multiply the amount in standard atmospheres by 1,013.25 to get millibar. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to standard atmospheres?
Use the millibar to standard atmospheres calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the pressure converter to browse all supported pairs.