PRESSURE CONVERSION

Millibar to Standard atmosphere.

Convert millibar (mbar) to standard atmosphere (atm), with the math explained.

Pressure converter
mbar
0.0009869232667atm
THE RESULT

1 mbar = 0.0009869232667 atm

Calculated in your browserFormula & conversion table

THE MATH, MADE SIMPLE

How to convert millibar to standard atmosphere

Multiply your millibar value by 0.000986923266716 to get the equivalent in standard atmosphere. Both units are normalized through the pascal.

CONVERSION FORMULAatm = mbar × 0.0009869232667
WORKED EXAMPLE

10 mbar = 0.00986923266716 atm

Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.

QUICK REFERENCE

mbar to atm conversion table

Reverse
Millibar (mbar)Standard atmosphere (atm)
1 mbar0.000986923266716 atm
2 mbar0.00197384653343 atm
5 mbar0.00493461633358 atm
10 mbar0.00986923266716 atm
20 mbar0.0197384653343 atm
50 mbar0.0493461633358 atm
100 mbar0.0986923266716 atm
500 mbar0.493461633358 atm
1,000 mbar0.986923266716 atm
mbar

About the millibar

The millibar (mbar) is a unit of pressure. One millibar equals 100 pascal (base unit) in this calculator.

All millibar conversions
atm

About the standard atmosphere

The standard atmosphere (atm) is a unit of pressure. One standard atmosphere equals 101,325 pascal (base unit) in this calculator.

All standard atmosphere conversions

Common questions

What is 1 mbar in atm?

One millibar equals 0.000986923266716 atm. Use the formula above for other values.

Why might another calculator show a different last digit?

Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.

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