Diameter To Radius
Result
Radius5
Circumference31.4159265359
Circle Area78.5398163397
↗ Math
Diameter To Radius — free online calculator.
Formula
Radius = Diameter / 2; Circumference = π × Diameter; Area = π × r²
- Diameter To Radius calculates its result from Diameter, Rate (decimal). It uses the formula Radius = Diameter / 2; Circumference = π × Diameter; Area = π × r². Change any input to recalculate the result instantly.
- The main inputs are Diameter, Unit. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Diameter To Radius
Inputs
- Diameter: 10
- Unit: cm
Using Diameter = 2, Rate (decimal) = 0.05, the calculated result is 0.0078539816.
Sample result: Calculating…
Frequently asked questions
What does the Diameter To Radius calculate?
Diameter To Radius — free online calculator.
Which values should I enter?
Enter Diameter, Unit using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Radius = Diameter / 2; Circumference = π × Diameter; Area = π × r².
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.