Space Travel Time Calculator

Estimate how long it would take to travel from Earth to other worlds at different speeds. Results are approximate and use average distances.

Pick a world to “fly” to.
Choose a preset or enter your own.
Example: 40,000 km/h (fast rocket).
How we calculate

Time = distance ÷ speed. We use average Earth-to-destination distances (in km). If you choose “% of light speed”, we use c ≈ 299,792 km/s.