Maths & Date Calculators
Free maths and date calculators with the working shown.
- Calculators3
- Rules and figuresUK, November 2026
- CostFree, no sign-up
Maths & dates calculators
Area calculatorArea of rectangles, triangles, circles and other shapes.Volume calculatorVolume of a cube, cuboid, cylinder, cone, sphere or pyramid.Age calculatorExact age in years, months and days, and days to your next birthday.
What each calculator does
| Calculator | What it works out |
|---|---|
| Area calculator | Area of rectangles, triangles, circles and other shapes. |
| Volume calculator | Volume of a cube, cuboid, cylinder, cone, sphere or pyramid. |
| Age calculator | Exact age in years, months and days, and days to your next birthday. |
Using these calculators
Check your units before you calculate: mixing metres and centimetres is the most common mistake.