Circle Radius from Area Reference Values

Calculate circle radius from area using r = √(A/π).

Author

Dr. Pablo Gutierrez

Math editorial contributor

Chilean climate scientist at the University of Chile, modeling glacier retreat in the Patagonian ice fields

Reviewed for accuracy by

Dr. Isabella Rossi

Math content reviewer

Italian neuroscientist at Sapienza University of Rome, studying the neural mechanisms of bilingual language processing

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. All value pages
  2. Reference table
  3. FAQs
  4. Methodology and review
  5. Related conversions

Reference Value Index

This page lists 20 reference values for quick browsing and lookup.

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All Reference Values

Reference Table

Circle Radius from Area reference values
AreaRadius
3.1416 sq units1.000001 units
12.5664 sq units2.000002 units
28.2743 sq units2.999998 units
50.2655 sq units4.000001 units
78.5398 sq units4.999999 units
100 sq units5.641896 units
150 sq units6.909883 units
200 sq units7.978846 units
300 sq units9.77205 units
500 sq units12.615663 units
800 sq units15.957691 units
1,000 sq units17.841241 units
1,500 sq units21.850969 units
2,000 sq units25.231325 units
3,000 sq units30.901936 units
5,000 sq units39.894228 units
8,000 sq units50.46265 units
10,000 sq units56.418958 units
20,000 sq units79.788456 units
50,000 sq units126.156626 units

Frequently Asked Questions

Frequently asked questions for Circle Radius from Area and its reference values.

What does the Circle Radius from Area calculator do?

It helps with estimating circle radius when area is specified in requirements or reports.

What formula does the Circle Radius from Area calculator use?

Circle radius = √(area / π).

What inputs are valid?

Area must be zero or greater for real-number results.

When would I use this?

estimating circle radius when area is specified in requirements or reports

Methodology and Review

Each row on this page links to a value detail page derived from the same conversion data file as the main calculator and reference table. This reduces inconsistencies across page variants.

Editorial metadata and structured data are rendered across the converter page and linked value pages. Review policies are documented in our review process and editorial policy.