Pressure Converter
Convert between Pascal, bar, PSI, atm, mmHg, and torr. Covers tire pressure, blood pressure, and industrial applications.
What is Pressure Converter?
This pressure converter translates between Pascal (Pa), kiloPascal (kPa), bar, millibar, PSI, atmosphere (atm), mmHg (torr), and inches of water column. Includes reference pressures for common applications like tire inflation and weather.
How to Use This Calculator
- Enter your Value, From in the input fields provided
- Results are computed instantly as you enter or modify values — no need to click a button
- Review the computed output showing your pressure results with a detailed breakdown
- Copy the converted value or try additional unit combinations — the conversion factor is shown for reference
How Pressure Converter is Calculated
This calculator uses the formula: Convert to Pascals, then to target unit. Where 1 atm = 101325 Pa ; 1 bar = 100000 Pa ; 1 PSI = 6894.76 Pa. Pascal is the SI unit of pressure. 1 atm = standard atmospheric pressure at sea level. All calculations run entirely in your browser — no data is transmitted to any server.
Frequently Asked Questions
What units is tire pressure measured in?
India and most countries: PSI (pounds per square inch) or bar. Car tires: 30–35 PSI (2.0–2.4 bar). Bike tires: 40–65 PSI. Check your car door sticker for the recommended pressure.
What is 1 atmosphere?
1 atm = 101,325 Pa = 1.01325 bar = 14.696 PSI = 760 mmHg. It is the average air pressure at sea level. Weather reports use hectoPascals (hPa) or millibars (same value). Standard atmosphere is used as a reference in science.
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Why Use This Calculator?
Unit conversion errors have caused billion-dollar disasters (the Mars Climate Orbiter was lost due to a unit mismatch). Pressure Converter provides instant, accurate conversions between all standard units. Whether you are working with international specifications, cooking with foreign recipes, or comparing products sold in different units, getting conversions right matters.
What This Tool Offers
- Instant Pressure Converter calculation with validated formulas
- Detailed step-by-step result breakdown
- Works offline as a Progressive Web App
- Completely free — no signup or data collection
- Mobile-friendly responsive design
- Save and share your results easily
Expert Tips
- 💡 Double-check conversions for critical applications — this tool helps but verify for high-stakes use.
- 💡 Learn the most common conversion factors in your field for quick mental math.
- 💡 When working across systems (metric/imperial), always state units explicitly.
- 💡 Use SI units as your base for consistency in scientific and engineering work.
- 💡 Bookmark for quick access — unit conversions come up more often than you think.
Who Is This For?
Students working on physics and chemistry, engineers working with international specifications, home cooks using foreign recipes, and anyone dealing with multiple unit systems.
📚 Complete Guide Available
Want to learn more? Read our comprehensive guide with detailed explanations, real-world examples, expert analysis, and actionable tips.
Read: PressureNote: Conversions use standard factors. For scientific or industrial applications requiring extreme precision, verify with authoritative reference sources.
Maintained by: Sagar Sahni, Calc Labz | Review: formula checks, worked examples, and periodic updates
Need a correction? Contact us with the calculator name, your inputs, and the issue you found.
Last updated: April 2026