Speed Calculator
Enter any two values to solve the third.
Speed = Distance / Time
Distance = Speed * Time
Time = Distance / Speed
Internal conversions between km/mi/m and km/h/mph/m/s
100 km in 2 h -> 50 km/h.
How do I use this?
Choose what to solve (speed, distance, or time), then enter the other two values. Select units to match your inputs.
What unit conversions are supported?
Distance: km, miles, meters. Speed: km/h, mph, m/s. Internally we convert to km and km/h as needed.
Can I enter minutes or seconds?
Enter hours as decimals (e.g., 1.5 h = 1 h 30 m). A time field with hours:minutes:seconds can be added if needed.
Why is my result unexpected?
Check that distance/time units match your selection. Small rounding differences are expected.
What can this solve?
Solve for speed, distance, or time when the other two are known. Includes unit conversions.
📐 Formula
Speed = Distance / Time
Distance = Speed * Time
Time = Distance / Speed
Internal conversions between km/mi/m and km/h/mph/m/s
📝 Example Calculation
100 km in 2 h -> 50 km/h.
❓ Frequently Asked Questions
How do I use this?▼
Choose what to solve (speed, distance, or time), then enter the other two values. Select units to match your inputs.
What unit conversions are supported?▼
Distance: km, miles, meters. Speed: km/h, mph, m/s. Internally we convert to km and km/h as needed.
Can I enter minutes or seconds?▼
Enter hours as decimals (e.g., 1.5 h = 1 h 30 m). A time field with hours:minutes:seconds can be added if needed.
Why is my result unexpected?▼
Check that distance/time units match your selection. Small rounding differences are expected.
What can this solve?▼
Solve for speed, distance, or time when the other two are known. Includes unit conversions.