Throw Distance Calculator
Standard projectile-motion physics for a lawn-game throw — enter your speed, angle, and release height for the estimated distance, flight time, and peak height.
Trajectory
The physics behind a good throw
Every throw splits into two independent motions: a constant horizontal speed and a vertical speed that gravity steadily slows, stops, and reverses. The horizontal distance is simply that constant speed multiplied by however long the throw stays airborne — so anything that extends flight time, like a higher release point or a steeper initial angle, extends distance too, up to a point.
Past 45 degrees (from ground level) you start trading away horizontal speed faster than you gain hang time, which is why very high, lobbed throws tend to travel a shorter distance than a well-angled, flatter one, even though they look more dramatic in the air.
Frequently Asked Questions
What's the best release angle for maximum distance?
For a throw released at ground level, 45 degrees gives the maximum distance for a given speed — it's the angle that splits your effort evenly between forward speed and hang time. Releasing from above the ground (like a raised horseshoe pitcher's stance) shifts the ideal angle slightly below 45 degrees, because the extra height gives the throw more time in the air regardless of angle.
How is this calculated?
It's standard projectile motion: your throw speed splits into a horizontal and vertical component based on the release angle, gravity pulls the vertical component back down, and the calculator solves for exactly when the throw returns to ground level (accounting for your release height) to get the flight time, then multiplies by the horizontal speed for distance.
Does this account for spin or air resistance?
No — it's the classic no-air-resistance projectile model used to teach and estimate trajectories. A cornhole bag's flat shape and a horseshoe's spin both add real-world drag and lift that this simplified model doesn't capture, so treat the result as a solid estimate rather than an exact prediction.
Why does release height matter?
A higher release point gives gravity more distance to pull the throw down, which means more time in the air and a longer horizontal distance for the same speed and angle — the calculator's quadratic solve accounts for this instead of assuming every throw starts and lands at the same height.
Simplified physics estimate — ignores air resistance, spin, and wind, so treat the result as a planning aid, not an exact prediction of a real throw.