BSFC Calculator — Free Online Tool
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BSFC Calculator

Calculate Brake Specific Fuel Consumption (BSFC) from total fuel flow rate and engine horsepower

BSFC Formula: $\text{BSFC (lbs/hp-hr)} = \frac{\text{Fuel Flow Rate (lbs/hr)}}{\text{Engine Horsepower (HP)}}$. Enter your fuel flow and horsepower specifications below.
Engine & Fuel Flow Input

Calculation Results

⚠️ Typical BSFC ranges from 0.40 to 0.50 for naturally aspirated gasoline engines, and 0.60 to 0.75+ for forced induction or race engines under heavy load.

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