Conversion Charts
Pressure (psi/kPa/bar) & Temperature (°F/°C)
AI Diesel Technician's Bible™ — complete conversion calculators, diesel pressure specs, temperature reference tables & shop procedures.
Unlock Full Bible — $9.95Diesel Pressure & Temperature Conversion Charts
Pressure conversion table (psi, kPa, bar, atm) from 1 psi to 26,000 psi fuel rail pressure, and temperature conversion table (°F to °C) with diesel engine reference points including DPF regen temperature and EGT limits.
Pressure Conversion
1 psi = 6.895 kPa = 0.0689 bar
| psi | kPa | bar | atm |
|---|---|---|---|
| 1 | 6.895 | 0.069 | 0.068 |
| 10 | 68.95 | 0.690 | 0.680 |
| 14.7(1 atm) | 101.3 | 1.013 | 1.000 |
| 30 | 206.8 | 2.068 | 2.040 |
| 60 | 413.7 | 4.137 | 4.082 |
| 100 | 689.5 | 6.895 | 6.805 |
| 150 | 1034 | 10.34 | 10.20 |
| 200 | 1379 | 13.79 | 13.61 |
| 500 | 3447 | 34.47 | 34.01 |
| 1000 | 6895 | 68.95 | 68.05 |
| 5000(Fuel rail) | 34,474 | 344.7 | 340.3 |
| 26,000(Max fuel rail) | 179,264 | 1793 | 1769 |
Temperature Conversion
°C = (°F − 32) × 5/9
| °F | °C | Reference |
|---|---|---|
| -40 | -40 | Cold start limit |
| 32 | 0 | Freezing |
| 70 | 21 | Room temp |
| 180 | 82 | Thermostat open |
| 200 | 93 | Normal coolant |
| 212 | 100 | Boiling (sea level) |
| 250 | 121 | Overheat warning |
| 300 | 149 | Critical overheat |
| 400 | 204 | Exhaust manifold |
| 700 | 371 | DPF regen temp |
| 1200 | 649 | EGT max limit |
Pro tip: Interactive pressure and volume calculators with instant unit conversion are available in the full Bible.
Need diesel-specific pressure and temperature specs?
The full Bible includes OEM pressure and temperature specifications for fuel rail, boost, oil, coolant, and aftertreatment systems — with min/max values by engine family and operating condition.
Unlock the Full Bible — $9.95Conversion Charts — FAQ
What is the fuel rail pressure in kPa for a diesel engine?
Common rail diesel fuel rail pressure ranges from approximately 200 bar (2,900 psi / 20,000 kPa) at idle to 1,800 bar (26,000 psi / 179,000 kPa) at full load. The exact pressure depends on the engine and operating conditions.
What temperature does a diesel DPF regenerate at?
A diesel particulate filter (DPF) regenerates at approximately 600–700°C (1,112–1,292°F). Active regeneration uses post-injection to raise exhaust temperature. Passive regeneration occurs naturally at sustained highway speeds.
How do I convert psi to kPa?
Multiply psi by 6.895 to get kPa. For example, 100 psi × 6.895 = 689.5 kPa. To convert kPa to psi, divide by 6.895.
What is the maximum EGT (exhaust gas temperature) for a diesel engine?
Maximum exhaust gas temperature (EGT) for most diesel engines is approximately 1,200°F (649°C) under sustained load. Exceeding this limit can damage turbocharger bearings, exhaust valves, and aftertreatment components.
Related Reference Pages
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