Use this circle diameter calculator to quickly calculate circle diameter from radius. Perfect for diameter of a circle formula tasks.
D = diameter of the circle
r = radius of the circle
| Radius | Diameter |
|---|---|
| 1 | 2.000000 |
| 2 | 4.000000 |
| 3 | 6.000000 |
| 5 | 10.000000 |
| 10 | 20.000000 |
1. Measure the radius of the circle.
2. Multiply the radius by 2 to get the diameter.
This circle diameter calculator instantly computes results with up to six decimal places. Ideal for students, engineers, and designers needing precise calculate circle diameter results.
• Diameter is twice the radius.
• Understanding diameter helps compute area and circumference.
• Diameter is widely used in geometry, engineering, and design.
• Wheels, circular tracks, and gears rely on accurate diameter.
• Diameter is fundamental in circle geometry.