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Calcimator

Striking Power Calculator

Estimate punch or kick force from body mass, fist velocity, and effective mass transfer. Compare your striking power to professional benchmarks.

Inputs

lb
m/s

Results

Peak Force

21,333 N

Power Rating

Elite — comparable to professional heavyweights

Peak Force4,796 lbs-force
Effective Mass32 kg
Kinetic Energy1,600 J
Peak Power106,667 W
Momentum320 kg·m/s
How to Use This Calculator
  1. Enter your Body Weight in kilograms.
  2. Set Fist / Foot Velocity in meters per second (jab ~6-8 m/s, cross ~9-12 m/s, kick ~12-16 m/s).
  3. Adjust Effective Mass Ratio (portion of body mass transferred in the strike, from 0.1 for arm-only to 0.5 for elite full-body technique).
  4. Review Peak Force in Newtons and pounds-force, Effective Mass in kilograms, Kinetic Energy in joules, Peak Power in watts, and Momentum.
  5. Use the Power Rating to benchmark your striking output against amateur, intermediate, professional, and elite levels.

How the result changes with Body Weight

Body WeightPeak ForcePower Rating
5113,600 NElite — comparable to professional heavyweights
7921,067 NElite — comparable to professional heavyweights
11229,867 NElite — comparable to professional heavyweights
13937,067 NElite — comparable to professional heavyweights

What each input means

Body Weight
Your body weight in kilograms. Heavier fighters can transfer more mass into strikes.
Fist / Foot Velocity
Speed of your fist or foot at impact. An average jab is ~6-8 m/s, cross ~9-12 m/s, kick ~12-16 m/s.
Effective Mass Ratio
Fraction of body weight behind the strike (0.1 = arm only, 0.4 = good technique with hip rotation, 0.5 = elite full-body transfer).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Body Weight = 80, Fist / Foot Velocity = 10, Effective Mass Ratio = 0.4 = 3 input(s) provided
  2. Calculate Peak Force
    Peak Force
    21333 = 21333
  3. Calculate Power Rating
    Elite — comparable to professional heavyweights = Elite — comparable to professional heavyweights
  4. Calculate Peak Force
    Peak Force
    4796 = 4796
  5. Calculate Effective Mass
    Effective Mass
    32 = 32

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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