Projectile motion calculator (time of flight, range, height)

How to use (3 steps)

Choose the mode: compute trajectory or find the speed for a target range.
Enter speed/angle/heights/gravity (example values are prefilled).
Press Compute to see time of flight, range, height, and the trajectory table. Copy URL shares the setup.

Default example: v0 = 20 m/s, θ = 45°, y0 = 0 m, g = 9.81 m/s².

Mode

Compute trajectory from launch parameters Find initial speed for a given range

Initial speed v0 m/s

Launch angle θ deg

Initial height y0 m

Target height y_target m

Gravity g m/s²

Number of sample points

Does this calculator consider air resistance?

No. It assumes ideal projectile motion without air drag, suitable for quick textbook-style estimates.

How should I handle units?

Use any consistent unit system (all distances and speeds in the same units). Defaults are meters and m/s.

What if the target point cannot be reached?

Some combinations of angle and heights make the target unreachable. The calculator will show an error if so.

Feedback is welcome. Comments load only after you click.