Pressure converter
Convert pressure units while preserving your chosen absolute or gauge reference.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- Converted value = × f₁ ÷ f₂; SI: Pa; ₁ = ₂
- Worked example: 1 bar = 100,000 Pa; 1 Standard atmosphere = 101,325 Pa
- Supported input limits: : 0 ≤ x ≤ 1,000,000,000,000
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Gauge or absolute is a reference label that stays unchanged during conversion. The calculator does not add or subtract atmospheric pressure. Standard atmosphere is a unit equal to 101,325 Pa, not a measurement of your local weather.
Sources
- NIST — conversion factor conventions Sources reviewed: 2026-10-06
- NIST — conversion factor table B.8 Sources reviewed: 2026-10-06
