How do I calculate speed from distance and time?

Speed = Distance / Time. For example: 350 km in 4 hours = 350 / 4 = 87.5 km/h. Our calculator also works in reverse: enter speed and time to get distance, or speed and distance to get time.

How do I convert km/h to mph?

Multiply km/h by 0.621371 to get mph. For example: 100 km/h = 62.14 mph. Conversely, multiply mph by 1.60934 to get km/h. Our calculator supports both unit systems with a toggle switch.

How long does it take to drive 500 km at 90 km/h?

Time = 500 / 90 = 5.56 hours = 5 hours 33 minutes. Select "Find Time" mode, enter 500 km and 90 km/h, and the calculator shows the result with hours and minutes.

Is this speed calculator free?

Yes, completely free with no registration.

Calculadora Velocidade Distância Tempo — Velocidade, Distância, Tempo · km/h e mph · Gratuito

The speed distance time calculator solves the fundamental physics equation: Speed = Distance / Time. Select which value you want to find (speed, distance, or time), enter the other two, and get your answer instantly. The calculator supports both metric (km/h, km) and imperial (mph, miles) units with a simple toggle.

Three modes cover every scenario: "Find Speed" when you know distance and time (How fast was I going?). "Find Distance" when you know speed and time (How far will I travel?). "Find Time" when you know speed and distance (How long will it take?). The formula is displayed alongside the result so you can verify the math.

Practical uses: planning road trip durations, calculating average running or cycling pace, estimating delivery times, solving physics homework problems, and understanding speed limits in different units. For example, 350 km at 90 km/h takes 3 hours 53 minutes. Use this alongside our Fuel Cost Calculator for complete trip planning and Unit Converter for other measurement needs.

Calculadora Velocidade Distância Tempo

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