Convert pounds per square inch (psi) to millibars (mbar).
Pressure converter
Instant conversion
Edit either value. Decimals and scientific notation supported.
1
psi
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PascalPa
KilopascalkPa
MegapascalMPa
Barbar
Millibarmbar
HectopascalhPa
Standard atmosphereatm
Pounds per square inchpsi
TorrTorr
Conventional millimetre of mercurymmHg
No units found. Try a name or symbol.
68.94757293
mbar
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PascalPa
KilopascalkPa
MegapascalMPa
Barbar
Millibarmbar
HectopascalhPa
Standard atmosphereatm
Pounds per square inchpsi
TorrTorr
Conventional millimetre of mercurymmHg
No units found. Try a name or symbol.
CONVERSION
1 psi ≈ 68.94757293 mbar
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAmbar = psi × 68.9475729316836
FORMULA & EXAMPLES
How to convert Pounds per square inch to millibars
mbar = psi × 68.9475729316836
Multiply the psi reading by 68.9475729316836.
Worked examples
1 psi ≈ 68.94757293 mbar
1 × 68.9475729316836 ≈ 68.94757293
30 psi ≈ 2068.427188 mbar
30 × 68.9475729316836 ≈ 2068.427188
Frequently asked questions
Does psi to mbar change gauge pressure into absolute pressure?
No. Unit conversion preserves the original pressure reference. Converting a gauge reading to absolute pressure additionally requires the applicable atmospheric pressure.
Pounds per square inch to millibars table
Fixed reference · Pounds per square inch to Millibar
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
Pounds per square inch (psi)
Millibar (mbar)
0
0
0.1
6.894757293
0.5
34.47378647
1
68.94757293
2
137.8951459
5
344.7378647
10
689.4757293
25
1723.689323
50
3447.378647
100
6894.757293
1000
68947.57293
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.