Gradian to Revolution (grad to rev) Converter
1 gradian equals 0.0025 revolutions (rev) — multiply the number of gradians by 0.0025, or divide by 400, to convert. A full turn is exactly 400 gradians, so each gradian is one four-hundredth of a revolution.
The formula
To convert gradians to revolutions, multiply by 0.0025:
revolutions = gradians × 0.0025
For example, 100 grad × 0.0025 = 0.25 rev (a quarter turn). To reverse it, multiply revolutions by 400.
Conversion table
| Gradians (grad) | Revolutions (rev) |
|---|---|
| 1 | 0.0025 |
| 2 | 0.005 |
| 5 | 0.0125 |
| 10 | 0.025 |
| 25 | 0.0625 |
| 50 | 0.125 |
| 100 | 0.25 |
| 200 | 0.5 |
| 400 | 1 |
How to convert online
Let the tool handle the fractions of a turn:
- Enter your gradian value in the first box.
- Read the revolution result instantly in the second box.
- Or type a revolution value to convert back to gradians — it works both ways.
Use the Gradian to Revolution Converter — free and instant in your browser.
Where this conversion is used
Revolutions describe complete turns of a wheel, motor shaft or dial, while gradians measure precise angles in surveying. Converting grad to rev is useful when a measured angle needs to be expressed as a fraction of a full rotation for gearing, motion control or animation.
FAQ
How many revolutions are in a gradian?
One gradian equals 0.0025 revolutions. It takes 400 gradians to make one full revolution.
What is the formula to convert gradians to revolutions?
Multiply gradians by 0.0025: revolutions = grad × 0.0025.
How do I convert revolutions back to gradians?
Multiply revolutions by 400. So 0.5 rev = 200 gradians.
Is the conversion exact?
Yes. A revolution is defined as exactly 400 gradians, so the 0.0025 factor is exact.
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