Discus Flight Calculator

Distance from release speed, angle, and spin rate.

Inputs

Release speed

m/s

Release angle

°

Release height

ft

Spin rate

rev/s

Wind speed

m/s

Angle of attack

°

Tab to move between fields

Results

Estimated Distance

68.05 m

≈ 6 school buses

Vacuum Distance57.64 m

Aerodynamic Lift Bonus18.1%

Flight Time3.8 s

Max Height18.63 m

Optimal Release Angle33.8°

Avg Lift Force6.01 N

Avg Drag Force3.08 N

Spin StabilityExcellent stability

How to Use This Calculator

Enter Release speed, Release angle, and Release height.
Set Spin rate, Wind speed, and Angle of attack.
Review the Estimated Distance result.
Use Vacuum Distance and Aerodynamic Lift Bonus (%) to inform your decision.

How the result changes with Release speed

Release speed	Estimated Distance
4.4	3.31 m
13	19.46 m
23	62.09 m
32	125.96 m

What each input means

Release speed: Speed of discus at release (elite ~24-28 m/s).
Release angle: Angle above horizontal at release (optimal ~33-38°).
Release height: Height of discus at the moment of release.
Spin rate: Rotational spin rate for gyroscopic stability (elite ~6-8 rev/s).
Wind speed: Positive = headwind (can help), negative = tailwind.
Angle of attack: Discus tilt relative to flight path (optimal ~5-10°).

What each result means

Estimated Distance: Predicted throw distance with aerodynamic effects.
Vacuum Distance: Distance without any air effects (pure projectile).
Aerodynamic Lift Bonus: Percentage distance gain from aerodynamic lift.
Flight Time: Total time the discus is airborne.
Max Height: Peak height of the discus trajectory.
Optimal Release Angle: Recommended release angle for these conditions.
Avg Lift Force: Average aerodynamic lift force during flight.
Avg Drag Force: Average aerodynamic drag force during flight.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Release speed = 24, Release angle = 35, Release height = 1.8, Spin rate = 7 = 6 input(s) provided
Calculate Estimated Distance
Estimated Distance = effectiveVx * adjustedTFlight
68.05 = 68.05
Calculate Vacuum Distance
Vacuum Distance = vx * tFlight
57.64 = 57.64
Calculate Aerodynamic Lift Bonus
18.1 = 18.1

Engine last updated July 28, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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