Radius to Diameter Reference Values

Convert radius to diameter with the basic relationship d = 2r.

Author

Dr. Amara Osei

Math editorial contributor

Ghanaian computational linguist with a PhD from MIT, specializing in NLP for low-resource African languages

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

Radius to Diameter reference values
RadiusDiameter
1 units2 units
2 units4 units
3 units6 units
4 units8 units
5 units10 units
6 units12 units
7 units14 units
8 units16 units
9 units18 units
10 units20 units
11 units22 units
12 units24 units
13 units26 units
14 units28 units
15 units30 units
16 units32 units
17 units34 units
18 units36 units
19 units38 units
20 units40 units

Frequently Asked Questions

Frequently asked questions for Radius to Diameter and its reference values.

What does the Radius to Diameter calculator do?

It calculates switching between radius-based and diameter-based dimensions in geometry and fabrication from the values you enter.

What formula does the Radius to Diameter calculator use?

Diameter = 2 × radius.

What inputs are valid?

Enter a non-negative or positive radius value. For physical circles, radius should be positive.

When would I use this?

switching between radius-based and diameter-based dimensions in geometry and fabrication

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.