Convertools

Circle Radius from Circumference

Calculate circle radius from circumference using r = C / (2π).

Author

Dr. Jean-Pierre Dupont

Math editorial contributor

French cognitive psychologist at ENS Paris, investigating decision-making under uncertainty in financial markets

Reviewed by

Dr. Emeka Nwosu

Math content reviewer

Nigerian legal scholar with an SJD from Yale, focused on international trade law and African continental free trade agreements

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Reference values
  2. Calculator
  3. Reference table
  4. FAQs
  5. Methodology and review
  6. Related conversions

62.831853 units =

10 units

Representative value from the Circle Radius from Circumference reference table.

Reference Values

Browse 20 reference values with individual detail pages for quick lookup.

Browse all reference values

Circle Radius from Circumference

Calculate circle radius from circumference using r = C / (2π).

Calculated Result

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Reference Table

Use this complete table for quick lookup and internal linking to specific value pages.

Circle Radius from Circumference Reference
CircumferenceRadius
1 units0.159155 units
2 units0.31831 units
3.141593 units0.5 units
6.283185 units1 units
10 units1.591549 units
12.566371 units2 units
20 units3.183099 units
25 units3.978874 units
31.415927 units5 units
50 units7.957747 units
62.831853 units10 units
75 units11.936621 units
100 units15.915494 units
125 units19.894368 units
150 units23.873241 units
200 units31.830989 units
250 units39.788736 units
300 units47.746483 units
500 units79.577472 units
1,000 units159.154943 units

Frequently Asked Questions

Common questions about Circle Radius from Circumference, formulas, and typical use cases.

What does the Circle Radius from Circumference calculator do?

It helps with recovering circle radius from measured perimeter length.

What formula does the Circle Radius from Circumference calculator use?

Circle radius = circumference / (2π).

What inputs are valid?

Circumference must be zero or greater. Physical values are typically positive.

When would I use this?

recovering circle radius from measured perimeter length

Methodology and Review

This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.

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