Calculate speed, distance or time from any two known values — in multiple unit combinations.
Advertisement
🚀
Fill in the details to get your result.
How This Works
Speed = Distance ÷ Time (SDT triangle). Distance = Speed × Time. Time = Distance ÷ Speed. Ensure consistent units — if distance is in km and time in hours, speed is in km/h. Convert as needed: 1 mile = 1.609 km; 1 m/s = 3.6 km/h.
Modern speed cameras work in two main ways: (1) Single point — radar or laser measures instantaneous speed. (2) Average speed (SPECS) — number plate recognition cameras separated by a known distance record timestamps. Speed = distance ÷ time. Average speed cameras are harder to beat because slowing down for the camera then speeding up still shows up in the average.