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Calcimator

Energy at Impact Calculator

Calculate remaining kinetic energy and velocity at any distance from bullet weight, muzzle velocity, and ballistic coefficient.

Inputs

fps
gr
yds

Results

Energy at Impact

2,414 ft-lbs

Muzzle Energy2,822 ft-lbs
Velocity at Impact2,544 fps
Energy Retention86%
Velocity Retention92%
Taylor Ko Simplified61.05
How to Use This Calculator
  1. Enter Muzzle Velocity, Ballistic Coefficient (G1), and Bullet Weight.
  2. Set Range.
  3. Review the Energy at Impact (ft-lbs) result.
  4. Use Muzzle Energy (ft-lbs) and Velocity at Impact (fps) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Muzzle Velocity

Muzzle VelocityEnergy at Impact
950288 ft-lbs
2,0751,375 ft-lbs
3,4253,745 ft-lbs
4,5506,609 ft-lbs

What each input means

Muzzle Velocity
Bullet speed at the muzzle.
Ballistic Coefficient (G1)
G1 ballistic coefficient.
Bullet Weight
Bullet weight in grains.
Range
Distance to target.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Muzzle Velocity = 2750, Ballistic Coefficient (G1) = 0.45, Bullet Weight = 168, Range = 300 = 4 input(s) provided
  2. Calculate Energy at Impact
    Energy at Impact
    2414 = 2414
  3. Calculate Muzzle Energy
    Muzzle Energy
    2822 = 2822
  4. Calculate Velocity at Impact
    Velocity at Impact
    2544 = 2544

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

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