Math & Statistics
Circle Calculator
Calculate circle area and circumference from radius.
Your inputs
Change any value to update the result instantly.
Circle area
314.1593 cm²
Circumference
62.8319 cm
Diameter
20 cm
Formula and working
area = πr²
- 1
Substitute your values
Radius = 10
- 2
Apply the formula
area = πr² = 314.16
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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