IES
General EngineeringP1

Pressure Unit Converter

Convert between pressure units: Pa, kPa, MPa, bar, psi, atm, kg/cm², and mmH₂O.

Inputs
Enter your values below
Result
Converted Pressure
—
Enter values and click Calculate
Formula
input × fromFactor ÷ toFactor

Converts pressure via Pascal reference: result = input × (Pa_per_fromUnit / Pa_per_toUnit). Factors are Pa per unit: Pa=1, kPa=1000, bar=100000, psi=6895, atm=101325.

Introduction

Convert between common engineering pressure units. Standard pressure unit conversions for hydraulic, pneumatic, process, and mechanical engineering.

Calculation Example

100 kPa = 14.5 psi (approximately 1 atmosphere).

Inputs: input=100, fromFactor=1000, toFactor=6894.76
Result: 14.5

Engineering Applications

  • •Hydraulic system design
  • •Process instrumentation
  • •Pneumatic systems
  • •International standards

Frequently Asked Questions

What is the exact conversion from bar to psi?

1 bar = 14.5038 psi = 100 kPa = 0.9869 atm. 1 bar is slightly less than 1 atmosphere (1 atm = 1.01325 bar).

What is the difference between gauge and absolute pressure?

P_abs = P_gauge + P_atm. 100 kPa gauge = ~201.3 kPa absolute. This converter works with both, just be consistent.

Related Calculators

Head Loss CalculatorPump Head Calculator

Need engineering design support?

Our engineering team validates results like these with full multi-disciplinary design review. Beyond the Pressure Unit Converter, we deliver build-ready engineering.

  • Industrial Building Design
  • Structural Optimization
  • HVAC & MEP Engineering
  • Chemical & Energy Projects
Request Engineering Assessment
Disclaimer: Calculations are for reference and educational purposes only. Always verify results independently for engineering design. See full disclaimer.