Degree to Radian
Free instant degree to radian converter. 1 ° = 0.0174533 rad.
Common Degree to Radian values
| Degree (°) | Radian (rad) |
|---|---|
| 0 | 0 |
| 30 | 0.523599 |
| 45 | 0.785398 |
| 60 | 1.0472 |
| 90 | 1.5708 |
| 180 | 3.14159 |
| 270 | 4.71239 |
| 360 | 6.28319 |
How does Degree to Radian conversion work?
Type a value in the Degree (°) field and the equivalent in Radian (rad) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Degree. The most common angle unit. A full circle = 360°.
Radian. The SI angle unit, used in mathematics. A full circle = 2π rad ≈ 6.283.
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No submit button — the result updates as you type. Math runs entirely in your browser, so it’s as fast as your device.
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Works in any modern browser — Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.
🎯 Accurate conversions
Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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