Convert hectopascals to millibars

1 hPa = 1 mbar — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.

1mbar
✓ Exact 1 hPa = 1 mbar
More converter tools

Readable results

Ranges, ± tolerances, feet/inches and clock durations work in the value field.

Unit picker

Export this result

1 hPa = 1 mbar
Show this value in all 27 pressure & stress units
  • Gigapascals GPa 0.000 000 1
  • Megapascals MPa 0.0001
  • Kilopascals kPa 0.1
  • Hectopascals hPa 1
  • Pascals Pa 100
  • Millipascals mPa 100 000
  • Micropascals µPa 100 000 000
  • Bars bar 0.001
  • Millibars mbar 1
  • Atmosphere (standard)s atm 0.000 986 923 266 716
  • Atmosphere (technical)s at 0.001 019 716 212 98
  • Torrs Torr 0.750 061 682 704
  • Millitorrs mTorr 750.061 682 704
  • Millimeter of mercurys mmHg 0.750 061 575 846
  • Centimeter of mercurys cmHg 0.075 006 157 584 6
  • Inch of mercurys inHg 0.029 529 983 301
  • Millimeter of waters mmH₂O 10.197 162 129 8
  • Centimeter of waters cmH₂O 1.019 716 212 98
  • Inch of waters inH₂O 0.401 463 075 976
  • Foot of waters ftH₂O 0.033 455 256 331 3
  • Pound per square inchs psi 0.014 503 773 773
  • Kilopound per square inchs ksi 0.000 014 503 773 773
  • Pound per square foots psf 2.088 543 423 32
  • Kilogram-force per square centimeters kgf/cm² 0.001 019 716 212 98
  • Kilogram-force per square meters kgf/m² 10.197 162 129 8
  • Newton per square millimeters N/mm² 0.0001
  • Dyne per square centimeters dyn/cm² 1000

Every row is Hectopascal (hPa) converted through the pascal, in exact rational arithmetic.

How to convert hectopascals to millibars

Multiply the number of hectopascals by 1 to get millibars.

The exact factor is 1 .

Millibar: Identical to the hectopascal used on modern weather charts.

Hectopascal to Millibar conversion table

Hectopascals (hPa) Millibars (mbar)
1 hPa 1
2 hPa 2
3 hPa 3
5 hPa 5
10 hPa 10
20 hPa 20
25 hPa 25
50 hPa 50
100 hPa 100
250 hPa 250
500 hPa 500
1000 hPa 1000

Millibar to Hectopascal conversion table

Millibars (mbar) Hectopascals (hPa)
1 mbar 1
2 mbar 2
3 mbar 3
5 mbar 5
10 mbar 10
20 mbar 20
25 mbar 25
50 mbar 50
100 mbar 100
250 mbar 250
500 mbar 500
1000 mbar 1000

Frequently asked

How many millibars are in a hectopascal?

One hectopascal equals 1 millibars (hPa → mbar). That figure is exact, not rounded.

How do you convert hectopascals to millibars?

Multiply the number of hectopascals by 1 to get millibars.

What is 1 mbar in hectopascals?

One millibar is 1 hectopascals.

What is 10 hPa in mbar?

10 hPa = 10 mbar.

What exactly is a millibar?

Identical to the hectopascal used on modern weather charts.

Related conversions

Settings

Theme

System follows your operating system and changes with it.

Text size
High contrast

Maximises text and border contrast and removes the grid background.

Graph-paper background

Round to
Notation
Thousands separators
Decimal mark
Nearest fraction

Shows the result as the nearest tape-measure fraction, with the error it costs.


Accessibility & interaction
Reduce motion Stops interface animations even when the operating system does not.
Underline links Keeps links visually distinct without relying on colour.
Larger touch targets Makes buttons and form controls easier to tap.
Shorter reading lines Limits article width for easier scanning.
Monochrome display Removes colour as an information cue.
Always-visible focus Makes the keyboard focus ring persistent and stronger.
Verbose screen-reader results Announces the complete conversion equation.
Sticky action bars Keeps converter and calculator actions within reach.
Select values on focus Replaces a value immediately when you start typing.
Left-handed mobile layout Moves key mobile actions toward the left thumb.

Your data

Settings, recent conversions and favourites live in this browser only. Nothing is sent anywhere.

Offline library