Dyno Correction Calculator — Correct Horsepower & Torque Readings

Dyno Correction Calculator

Calculate corrected horsepower and torque values using SAE, DIN, or ECE standards. Adjust for temperature, pressure, and humidity to get accurate power readings from your dynamometer tests.

Step 1: Engine & Environmental Data

75°F
29.92 inHg
50%

About Environmental Factors

Temperature, pressure, and humidity affect air density, which impacts engine performance. Higher temperatures and humidity reduce air density, lowering power output.

Step 2: Correction Standards & Options

About Correction Standards

Different standards use different reference conditions and formulas. SAE J1349 is most common in North America, while DIN is standard in Germany and ECE in Europe.

Dyno Correction Results

Summary
Correction Standards
Breakdown

Correction Factor

1.032
SAE J1349 Standard
Corrected Horsepower
464.4 HP
Corrected Torque
433.4 lb-ft
Power Gain/Loss
+14.4 HP
Torque Gain/Loss
+13.4 lb-ft
Air Density
0.074 lb/ft³
Vapor Pressure
0.46 inHg

Correction Standards Comparison

Standard Reference Temp Reference Pressure Reference Humidity Correction Factor

Understanding Correction Standards

Different automotive standards organizations have established various reference conditions for engine power measurement. This allows for fair comparison of engine performance measured under different environmental conditions.

Environmental Impact Breakdown

Correction Factor by Temperature

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