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Millibars to standard atmospheres

1 millibar in standard atmospheres
1 mbar = 0.0009869 atm
atm = mbar × 0.000986923267

To convert millibars to standard atmospheres, multiply by 0.000986923267. The table below gives the values people look up most often, and the converter works for any number.

Millibars to standard atmospheres table

Common millibar values converted to standard atmospheres.
Millibars Standard atmospheres
1 mbar 0.0009869
2 mbar 0.0019738
3 mbar 0.0029608
4 mbar 0.0039477
5 mbar 0.0049346
10 mbar 0.0098692
15 mbar 0.014804
20 mbar 0.019738
25 mbar 0.024673
30 mbar 0.029608
40 mbar 0.039477
50 mbar 0.049346
75 mbar 0.074019
100 mbar 0.098692
250 mbar 0.24673
500 mbar 0.49346
1,000 mbar 0.98692

How the conversion works

The relationship is atm = mbar × 0.000986923267. Both units measure pressure, so the conversion is a fixed factor that never changes.

Common questions

How many standard atmospheres are in one millibar?
One millibar equals 0.0009869 standard atmospheres. atm = mbar × 0.000986923267.
How do you convert millibars to standard atmospheres?
Use atm = mbar × 0.000986923267. So 10 mbar is 0.0098692 atm.
How many millibars are in one standard atmosphere?
One standard atmosphere equals 1,013.25 millibars, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked