Game Jump Height Calculator
Enter gravity and target jump height to instantly get initial velocity, hang time, and full jump arc for your 2D platformer character.
Use the Game Jump Height Calculator
Jump Parameters
e.g. 9.8 m/s² real-world, 20–50 for snappy platformers
Height from ground to the top of the jump arc
Higher value = faster fall, more responsive landing feel
Results appear here after you calculate.
Equations Applied
Jump Arc Preview
Vertical position over time (not to game-world scale)
Code Snippet
Summary
This tool applies standard kinematic equations to compute the initial vertical velocity, apex time, and total hang time for a 2D game character jump. Feed it your engine's gravity constant and the jump height you want, and it instantly returns every value you need to wire into code. An optional asymmetric fall gravity field lets you model the "floaty ascent, fast descent" feel common in modern platformers.
How it works
- Enter your game gravity (units per second squared) and the desired jump apex height.
- The calculator applies kinematic equations: v₀ = sqrt(2 × g × h) and t_apex = v₀ / g.
- Total hang time is 2 × t_apex (symmetric arc under constant gravity).
- Results update instantly so you can tweak values until the jump feels right.
Use cases
- Tune how high a platformer hero jumps for a given gravity setting.
- Match jump feel to a reference game by reverse-engineering its velocity.
- Calculate hang time so you can set animation frame budgets.
- Compare how gravity changes affect jump arc without writing code.
- Prototype physics constants before wiring them into your game engine.
- Check whether a jump clears a specific platform gap at a given height.