ZovaTool

Horsepower Calculator

Horsepower
265 HP
Metric
197.6 kW
268.7 PS
Power/Weight
82.8 hp/1000lb
Est. 0-60 mph
20.2 s

How to use the Horsepower Calculator

  1. Pick a method: Trap Speed (most accurate), ET, or Torque × RPM.
  2. Enter vehicle weight and the drag-strip / dyno number.
  3. Read horsepower and equivalent kW.
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Three ways to find horsepower

Trap speed (Hale): HP = (mph / 234)³ × weight. Most accurate at-the-strip estimator.

ET (Wallace): HP = weight / (ET / 5.825)³.

Dyno: HP = torque × RPM / 5252 — at any RPM, HP and torque cross at 5252.