🏎️ Speed Distance Time Calculator
Calculate speed, distance, or time from any two of the three values. Perfect for travel planning, physics homework, and everyday use. Supports km/h, mph, m/s, and more.
Speed, Distance, Time Formulas
| To Find | Formula | Example |
|---|---|---|
| Speed | Speed = Distance ÷ Time | 300 mi ÷ 5 h = 60 mph |
| Distance | Distance = Speed × Time | 60 mph × 5 h = 300 mi |
| Time | Time = Distance ÷ Speed | 300 mi ÷ 60 mph = 5 h |
Common Speed Conversions
| mph | km/h | m/s |
|---|---|---|
| 30 | 48.3 | 13.4 |
| 60 | 96.6 | 26.8 |
| 100 | 160.9 | 44.7 |
Frequently Asked Questions
How do I calculate speed?
Speed = Distance ÷ Time. For example, if you travel 300 miles in 5 hours: Speed = 300 ÷ 5 = 60 mph.
How do I calculate travel time?
Time = Distance ÷ Speed. For example, 500 miles at 65 mph: Time = 500 ÷ 65 ≈ 7.69 hours (7 hours 41 minutes).
How do I convert km/h to mph?
Multiply km/h by 0.621371. For example, 100 km/h × 0.621371 = 62.14 mph.
What is average speed?
Average speed = Total Distance ÷ Total Time. It accounts for stops and varying speeds. It is not the same as the average of multiple speeds.