Diameter to Radius Reference Values
Convert diameter to radius with the relationship r = d / 2.
Table of Contents
Reference Value Index
This page lists 20 reference values for quick browsing and lookup.
All Reference Values
- 2 units = 1 units
- 4 units = 2 units
- 6 units = 3 units
- 8 units = 4 units
- 10 units = 5 units
- 12 units = 6 units
- 14 units = 7 units
- 16 units = 8 units
- 18 units = 9 units
- 20 units = 10 units
- 22 units = 11 units
- 24 units = 12 units
- 26 units = 13 units
- 28 units = 14 units
- 30 units = 15 units
- 32 units = 16 units
- 34 units = 17 units
- 36 units = 18 units
- 38 units = 19 units
- 40 units = 20 units
Reference Table
| Diameter | Radius |
|---|---|
| 2 units | 1 units |
| 4 units | 2 units |
| 6 units | 3 units |
| 8 units | 4 units |
| 10 units | 5 units |
| 12 units | 6 units |
| 14 units | 7 units |
| 16 units | 8 units |
| 18 units | 9 units |
| 20 units | 10 units |
| 22 units | 11 units |
| 24 units | 12 units |
| 26 units | 13 units |
| 28 units | 14 units |
| 30 units | 15 units |
| 32 units | 16 units |
| 34 units | 17 units |
| 36 units | 18 units |
| 38 units | 19 units |
| 40 units | 20 units |
Frequently Asked Questions
Frequently asked questions for Diameter to Radius and its reference values.
What does the Diameter to Radius calculator do?
It calculates converting measured diameter values into radius for geometry formulas from the values you enter.
What formula does the Diameter to Radius calculator use?
Radius = Diameter / 2.
What inputs are valid?
Enter a non-negative or positive diameter value. For physical circles, diameter should be positive.
When would I use this?
converting measured diameter values into radius for geometry formulas
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.