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Pressure converter

Pressure Unit Converter

Enter values with a dot (e.g. 1.5) or comma (e.g. 1,5), or use the buttons

Operating instructions for the calculator ‘Pressure Unit Converter’

Description of the calculator

The ‘Pressure Units Converter’ calculator allows you to quickly convert pressure values between different units: bar, mbar, Pa (N/m²), kPa (kN/m²), PSI (lb/in²) and MPa. You can enter the values manually or change them using the scroll buttons and the calculator will automatically update the other fields.

How to use the calculator

  1. Select the Starting Unit:
    • Locate the field corresponding to the unit you want to start with (e.g., “Bar”, “PSI”).
  2. Enter a Value Manually:
    • Click on the chosen field (e.g., “Bar”).
    • Enter a value using a dot (e.g., “1.5”) or a comma (e.g., “1,5”) as the decimal separator.
    • After entering the value, press Enter or click outside the field – the calculator will automatically recalculate and update the values in the other fields.
    • Example: Enter “1,5” in the “Bar” field, and you’ll see:
      • mBar: “1500,000000”
      • Pa: “150000,000000”
      • kPa: “150,000000”
      • PSI: “21,755661”
      • MPa: “0,150000”
  3. Use the Scroll Buttons:
    • Next to each field are buttons “↑” (increase value) and “↓” (decrease value).
    • Click “↑” to increase the value in the selected field by a specific step, or “↓” to decrease it. The steps for each unit are:
      • Bar: ±0.1
      • mBar: ±1
      • Pa: ±100
      • kPa: ±10
      • PSI: ±0.1
      • MPa: ±0.01
    • Example: If “Bar” shows “1,5”, clicking “↑” will change it to “1,6”, and the other fields will update (e.g., mBar: “1600,000000”).
  4. Edit Other Fields:
    • You can move to any other field (e.g., “PSI”) and enter a new value (e.g., “14.5” or “14,5”).
    • The calculator will recalculate all other units based on the newly edited field.
    • Example: Enter “14,5” in “PSI”, and you’ll see:
      • Bar: “0,999816”
      • mBar: “999,815592”
      • Pa: “99981,559200”
      • kPa: “99,981559”
      • MPa: “0,099982”
  5. Clear the Fields:
    • If you enter an invalid value (e.g., letters), all fields will be cleared automatically.
    • To manually clear, remove the value from any field and press Enter.

Notes

  • The calculator preserves the decimal separator format (dot or comma) based on what you entered in the edited field.
  • Values are displayed with precision up to 6 decimal places.
  • Negative values are not allowed – if a result would be negative (e.g., after clicking “↓”), the calculator sets it to 0.

Conversion table for pressure units

Unit bar mbar Pa [N/m²] kPa [kN/m²] PSI [lb/in²] MPa
1 bar 1 1000 100000 100 14.5038 0.1
1 mbar 0.001 1 100 0.1 0.014504 0.0001 (10-4)
1 Pa [N/m²] 0.00001 0.01 1 0.001 0.000145038 0.000001 (10-6)
1 kPa [kN/m²] 0.01 10 1000 1 0.145038 0.001 (10-3)
1 PSI [lb/in²] 0.06895 68.9476 6894.76 6.89476 1 0.0069
1 MPa 10 10000 (104) 1000000 (106) 1000 (103) 145.04 1