Circle Area from Diameter Reference Values
Calculate circle area from diameter using A = πd²/4.
Table of Contents
Reference Value Index
This page lists 20 reference values for quick browsing and lookup.
All Reference Values
- 1 units = 0.7854 sq units
- 2 units = 3.1416 sq units
- 3 units = 7.0686 sq units
- 5 units = 19.635 sq units
- 8 units = 50.2655 sq units
- 10 units = 78.5398 sq units
- 12 units = 113.0973 sq units
- 15 units = 176.7146 sq units
- 20 units = 314.1593 sq units
- 25 units = 490.8739 sq units
- 30 units = 706.8583 sq units
- 40 units = 1,256.6371 sq units
- 50 units = 1,963.4954 sq units
- 75 units = 4,417.8647 sq units
- 100 units = 7,853.9816 sq units
- 125 units = 12,271.8463 sq units
- 150 units = 17,671.4587 sq units
- 200 units = 31,415.9265 sq units
- 250 units = 49,087.3852 sq units
- 300 units = 70,685.8347 sq units
Reference Table
| Diameter | Circle Area |
|---|---|
| 1 units | 0.7854 sq units |
| 2 units | 3.1416 sq units |
| 3 units | 7.0686 sq units |
| 5 units | 19.635 sq units |
| 8 units | 50.2655 sq units |
| 10 units | 78.5398 sq units |
| 12 units | 113.0973 sq units |
| 15 units | 176.7146 sq units |
| 20 units | 314.1593 sq units |
| 25 units | 490.8739 sq units |
| 30 units | 706.8583 sq units |
| 40 units | 1,256.6371 sq units |
| 50 units | 1,963.4954 sq units |
| 75 units | 4,417.8647 sq units |
| 100 units | 7,853.9816 sq units |
| 125 units | 12,271.8463 sq units |
| 150 units | 17,671.4587 sq units |
| 200 units | 31,415.9265 sq units |
| 250 units | 49,087.3852 sq units |
| 300 units | 70,685.8347 sq units |
Frequently Asked Questions
Frequently asked questions for Circle Area from Diameter and its reference values.
What does the Circle Area from Diameter calculator do?
It helps with finding circular coverage area when diameter is known from drawings or measurements.
What formula does the Circle Area from Diameter calculator use?
Circle area from diameter = π × diameter² / 4.
What inputs are valid?
Enter a positive diameter greater than zero.
When would I use this?
finding circular coverage area when diameter is known from drawings or measurements
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.