Free Maths Calculator
Speed Distance Time Calculator
One triangle, three formulas: speed, distance and time, density, mass and volume, and pressure, force and area all work the same way. Fill in the two values you know, leave the one you want at zero, and the calculator picks the right version of the formula and shows the division or multiplication.
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Answer
Method, Step by Step
Worked Example
A car travels 120 miles in 3 hours. Find its average speed.
- The triangle: distance on top, speed and time underneath
- Cover speed: what is left is distance over time
- speed = distance ÷ time = 120 ÷ 3 = 40
Answer: 40 mph
Try These Yourself
A cyclist rides 45 km at 15 km/h. How long does it take?Show answer
Answer: 3 hours
time = distance ÷ speed = 45 ÷ 15.
A metal has density 8 g/cm³ and volume 5 cm³. Find its mass.Show answer
Answer: 40 g
mass = density × volume = 8 × 5.
A force of 60 N presses on an area of 4 m². Find the pressure.Show answer
Answer: 15 N/m²
pressure = force ÷ area = 60 ÷ 4.