Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Millibar to standard atmosphere

Convert millibar (mbar) to standard atmosphere (atm) with adjustable precision, a worked example and a reference table.

Need another unit? Open the complete Pressure workspace →

Converters workspace● Runs in your browser
01 Your input
02 Your result
YOUR RESULT
Ready when you are
Conversion formula(value × 100 + 0 − 0) ÷ 101325

Reference table

mbaratm
10.000986923266716
50.00493461633358
100.00986923266716
250.0246730816679
500.0493461633358
1000.0986923266716

How the conversion works

The input is converted into Pa using the source factor and offset, then into standard atmosphere. This keeps unit definitions consistent across the pressure collection.

Definitions and sources

Factors are maintained in the versioned unit dataset. Output is rounded to your selected significant digits; calculation uses JavaScript double precision.

How to use this tool

  1. Enter a finite numeric value in millibar.
  2. Choose the significant digits for your result.
  3. Copy or download the result, including its formula.

Try this example

10

Accuracy and scope

Gauge and absolute pressure cannot be interconverted without reference pressure. Water/mercury columns use conventional definitions, not an actual measured fluid column.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.