Pressure Unit Conversion Tool
In engineering design, weather forecasting, automotive maintenance, medical devices, aerospace applications, and even everyday tasks like checking tire pressure, pressure unit conversion is ubiquitous. However, the coexistence of different measurement systems—from the SI unit pascal (Pa) to the U.S.-common psi, meteorological hPa, and industrial bar—makes manual conversions highly error-prone.
To solve this problem, we introduce a professional Pressure Unit Conversion Tool that supports instant, high-precision conversion among the following 8 mainstream pressure units:
- Pascal (Pa) — the SI base unit
- Kilopascal (kPa) and Megapascal (MPa) — commonly used in engineering and material strength
- Hectopascal (hPa) — standard in meteorology (1 hPa = 1 millibar)
- Bar (bar) — widely used in European industry and tire pressure
- Torr (torr) — common in vacuum systems and medicine (≈1 mmHg)
- Pounds per square inch (psi) and kilopounds per square inch (ksi) — standard in U.S. engineering and mechanical fields
Just enter a value, select the source and target units, and get an accurate result instantly!
🔁 Core Pressure Conversion Formulas
Reference Values (based on Pascal)
| Unit | Equivalent in Pascals (Pa) |
|---|---|
| 1 Pa | 1 |
| 1 hPa | 100 |
| 1 kPa | 1,000 |
| 1 MPa | 1,000,000 |
| 1 bar | 100,000 |
| 1 torr | ≈ 133.322 |
| 1 psi | ≈ 6,894.76 |
| 1 ksi | ≈ 6,894,760 |
Key Definitions
- 1 bar = 10⁵ Pa (exact)
- 1 standard atmosphere (atm) ≈ 101,325 Pa = 760 torr = 14.6959 psi
- 1 torr ≈ 1 mmHg (millimeter of mercury), used in blood pressure and vacuum measurements
- 1 ksi = 1,000 psi
Common Conversion Formulas
| Conversion Direction | Formula |
|---|---|
| Pa → kPa | kPa = Pa ÷ 1,000 |
| kPa → MPa | MPa = kPa ÷ 1,000 |
| bar → Pa | Pa = bar × 100,000 |
| psi → kPa | kPa = psi × 6.89476 |
| MPa → psi | psi = MPa × 145.038 |
| torr → Pa | Pa = torr × 133.322 |
| hPa → bar | bar = hPa ÷ 1,000 |
| ksi → MPa | MPa = ksi × 6.89476 |
📊 Common Pressure Unit Reference Table
| Pa | hPa | kPa | MPa | bar | torr | psi | ksi |
|---|---|---|---|---|---|---|---|
| 100 | 1 | 0.1 | 0.0001 | 0.001 | 0.750 | 0.0145 | 1.45e-5 |
| 1,000 | 10 | 1 | 0.001 | 0.01 | 7.50 | 0.145 | 1.45e-4 |
| 10,000 | 100 | 10 | 0.01 | 0.1 | 75.0 | 1.45 | 0.00145 |
| 100,000 | 1,000 | 100 | 0.1 | 1 | 750.1 | 14.50 | 0.0145 |
| 1,013,250 | 10,132.5 | 1,013.25 | 1.01325 | 10.1325 | 7,600 | 146.96 | 0.147 |
| 1,000,000 | 10,000 | 1,000 | 1 | 10 | 7,500.6 | 145.04 | 0.145 |
| 6,894,760 | 68,947.6 | 6,894.76 | 6.89476 | 68.9476 | 51,715 | 1,000 | 1 |
✅ Key Reference Points
- 101,325 Pa = 1 standard atmosphere (atm)
- 100,000 Pa = 1 bar ≈ sea-level atmospheric pressure
- 32 psi ≈ recommended tire pressure for a typical passenger car
- 1 ksi is often used for material tensile strength (e.g., steel ≈ 50–200 ksi)
✨ Tool Advantages
- Comprehensive coverage: All 8 major pressure units for scientific, engineering, meteorological, medical, and automotive needs
- High-precision calculations: Uses internationally standardized conversion factors (e.g., 1 psi = 6,894.757 Pa)
- Real-time conversion: Results update instantly as you type
- Supports decimals and scientific notation
- Completely free · No ads · No registration required
- Responsive interface: Works seamlessly on mobile phones, tablets, and desktops
🌐 Try It Now!
🔧 Make pressure conversion simple, reliable, and efficient!
Whether you're checking tire pressure, interpreting weather maps, designing hydraulic systems, or studying physics and chemistry—this tool is your professional assistant.
⚙️ Give it a try today—precisely control every pascal!