This online calculator converts pressure from pascals (Pa) to bar (bar) using exact SI relationships. Units referenced: Pa, kPa, MPa, bar. Suitable for engineering notes, lab write-ups, and equipment specifications.
Pascal (Pa) to Bar (bar) Converter
Enter a value in pascals and press the button to convert it to bar
Pascals (Pa)
Result in Bar (bar)
How to Use
- Enter a number in the “Pascals (Pa)” field. Use the companion tool for the opposite direction if needed.
- Select “Convert” to compute the result.
- Adjust “Decimal Places” (0–10) to control rounding shown in the result and the calculation line.
- Use “Copy Result” to place the value on your clipboard.
- “Clear All” resets inputs, the result field, and the calculation process text.
- If your UI has a “Swap” button, it toggles between Pa → bar and bar → Pa modes.
Definitions and Unit Details
Pascal (Pa) — SI unit of pressure; 1 Pa = 1 N/m². System: SI (derived). Abbreviation: Pa. Exact relation in this calculator: 1 Pa = 0.00001 bar. Cross-reference to US customary: 1 psi = 6,894.757 Pa, so 1 Pa ≈ 0.0001450377 psi.
Bar (bar) — non-SI metric unit used widely in meteorology, diving, hydraulics, and process industries. System: non-SI (accepted in practice). Abbreviation: bar. Exact relation in this calculator: 1 bar = 100,000 Pa = 100 kPa = 0.1 MPa. In US customary terms, 1 bar ≈ 14.5037738 psi.
Conversion Formula
From pascals to bar: pbar = pPa ÷ 100,000.
From bar to pascals: pPa = pbar × 100,000.
Source: “Non-SI units accepted for use with the SI” listing bar = 105 Pa in the NIST SI Brochure, Special Publication 330: The International System of Units (SI).
Conversion Table (Pa → bar)
| Pa | bar |
|---|---|
| 1 | 0.00001 |
| 10 | 0.0001 |
| 50 | 0.0005 |
| 100 | 0.001 |
| 200 | 0.002 |
| 500 | 0.005 |
| 1,000 | 0.01 |
| 2,000 | 0.02 |
| 5,000 | 0.05 |
| 10,000 | 0.1 |
| 20,000 | 0.2 |
| 50,000 | 0.5 |
| 75,000 | 0.75 |
| 100,000 | 1 |
| 150,000 | 1.5 |
| 200,000 | 2 |
| 500,000 | 5 |
| 1,000,000 | 10 |
| 5,000,000 | 50 |
| 10,000,000 | 100 |
Real World Examples
- IUPAC standard pressure p° = 100,000 Pa = 1 bar
- Standard atmosphere = 101,325 Pa = 1.01325 bar
- EU LPG regulator nominal outlet = 3,000 Pa = 0.03 bar
- UK domestic natural gas nominal supply = 2,100 Pa = 0.021 bar
- SCUBA cylinder working pressure marking = 20,000,000 Pa = 200 bar
- Paintball/SCBA high-pressure system rating = 30,000,000 Pa = 300 bar
- Automotive port-injection fuel rail spec = 300,000 Pa = 3 bar
- Laboratory rough vacuum reference = 100 Pa = 0.001 bar
- Hydraulic tool system rating = 70,000,000 Pa = 700 bar
- Road bike floor pump max rating = 1,100,000 Pa = 11 bar
If another online tool would help your work or studies, please tell us in the comments and we will consider building it.
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