Calculator
Pressure Converter
Convert pressure between Pa, kPa, bar, psi, mmHg, and cmH2O.
Calculator Inputs
Pressure value must be a valid number.
Legend
Pressure conversion legend
Each pressure value is converted to pascal as a base unit, then converted to the selected output unit.
Input meaning
- Pa/kPa/bar are SI-style engineering units.
- psi is common in cylinders, compressors, and some utility systems.
- mmHg and cmH2O appear in clinical, suction, ventilation, and pressure-monitoring contexts.
Result interpretation
- Converted values should be rounded according to instrument accuracy.
- Unit conversion does not confirm that a regulator, gauge, or transducer is calibrated.
Assumptions
- Pure unit conversion only.
- No correction for gas type, altitude, temperature, or instrument uncertainty.
Biomedical use
- Useful for medical gas, suction, ventilator, anesthesia, calibration, and utility documentation.
How to identify the required values
Use these examples to choose values from gauges, labels, manuals, datasheets, or service reports.
| Field | Example value | Tip |
|---|---|---|
| Pressure value | Medical oxygen pipeline: 4 bar or about 400 kPa. | Copy the value from the gauge, service report, or manufacturer requirement. |
| From unit | psi from a cylinder gauge. | Match the unit printed beside the value; do not guess. |
| To unit | Convert psi to bar for a site utility schedule. | Use the unit expected in the RFQ, service report, or local engineering standard. |
Input Checklist
Confirm these values before relying on the output for procurement, PM, or service planning.
- Value
- From unit
- To unit
Safety And Engineering Notes
Use calculator outputs as planning estimates and verify critical systems with calibrated measurement or qualified engineering review.
- Round results appropriately for the instrument accuracy and application.
- Do not substitute unit conversion for calibrated testing.