Calculate the area, circumference, and diameter of a circle from its radius.
Calculate the area, circumference, and diameter of a circle from its radius.
Area = πr²; Circumference = 2πr
Radius 7 → Area ≈ 153.94, Circumference ≈ 43.98.
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What is Circle Calculator?
Calculate the area, circumference, and diameter of a circle from its radius.
What formula does this use?
This calculator uses: Area = πr²; Circumference = 2πr
Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.
Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.