📐 Angle
gradians to radians Converter
Convert gradians to radians instantly with a reference conversion table.
Quick answer: To convert gradians to radians, multiply by 0.015708. For example, 1 gradians = 0.015708 radians. Use the calculator below for any value.
gradians to radians
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Common conversions
| gradians | radians |
|---|
Formula:
How to convert gradians to radians
1
Enter your value
Type the number of gradians you want to convert into the left box. The result in radians appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — radians to gradians. Your current value carries across so you don't have to re-enter anything.
3
About gradians and radians
gradians and radians are common angle measurements.
💡 Did you know?
1 gradian = π/200 radians ≈ 0.01571 rad. The gradian was designed by French revolutionary mathematicians to 'decimalise' angles. A right angle = 100 gradians (clean). It's still used in surveying and civil engineering in France and some EU countries.
📊 Common conversions at a glance
| gradians | radians |
|---|---|
| 0 | 0 |
| 25 | 0.3927 |
| 50 | 0.7854 |
| 100 | 1.571 |
| 133.33 | 2.094 |
| 200 | 3.142 |
Reviewed for 2026. gradians ↔ radians conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.