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Calcimator

Javelin Optimal Angle Calculator

Release angle optimization from height and velocity.

Inputs

m/s
ft
°
°
m/s
lb

Results

Estimated Distance

91.31 m

≈ 8 school buses

Optimal Release Angle44.5°
Max Possible Distance97.36 m
Vacuum Distance76.82 m
Angle Deviation-10.5°
Distance Lost6.05 m
Maximum Height19.96 m
Flight Time3.94 s
Lift Force1.7 N
Drag Force0.01 N
LevelWorld class
How to Use This Calculator
  1. Enter Release speed, Release height, and Release angle.
  2. Set Attitude angle offset, Wind speed, and Javelin mass.
  3. Review the Estimated Distance result.
  4. Use Optimal Release Angle (°) and Max Possible Distance (m) to inform your decision.

How the result changes with Release speed

Release speedEstimated Distance
1319.1 m
2148.93 m
30106.89 m
37176.29 m

What each input means

Release speed
Speed of javelin at release (elite men ~28-30 m/s).
Release height
Height of javelin at the moment of release.
Release angle
Release angle above horizontal (optimal ~30-36°).
Attitude angle offset
Javelin nose-up angle relative to velocity vector (optimal ~0-6°).
Wind speed
Positive = headwind, negative = tailwind.
Javelin mass
Javelin mass (men 0.8 kg, women 0.6 kg).

What each result means

Estimated Distance
Predicted throw distance with aerodynamic effects.
Optimal Release Angle
Best release angle for maximum distance in these conditions.
Max Possible Distance
Distance achievable at optimal angle with same speed.
Vacuum Distance
Distance without air effects (pure projectile).
Angle Deviation
How far your release angle is from optimal (+ = too high).
Distance Lost
Distance lost due to non-optimal release angle.
Maximum Height
Peak height of the javelin trajectory.
Flight Time
Total time the javelin is airborne.
Lift Force
Average aerodynamic lift on the javelin.
Drag Force
Average aerodynamic drag on the javelin.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Release speed = 28, Release height = 1.9, Release angle = 34, Attitude angle offset = 3 = 6 input(s) provided
  2. Calculate Estimated Distance
    Estimated Distance = effectiveVx * tFlightAero
    91.31 = 91.31
  3. Calculate Optimal Release Angle
    Optimal Release Angle = 30
    44.5 = 44.5
  4. Calculate Max Possible Distance
    97.36 = 97.36

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

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