AtlasCalc📏 ConversionbeginnerOffline
Angle Converter
Convert between degrees, radians, gradians, arc-minutes, turns.
Inputs
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Result
Your answer appears here.
Enter values and press Calculate — the result appears here.
How it works
The formula behind this calculator.
360° = 2π rad = 400 grad
- value, from, to
- Source value and unit
Surveying uses grads (decimal degrees × 10/9). Astronomy and navigation use degrees or hours (1h = 15°).
Example: 90° = π/2 rad = 100 grad; 180° = π rad = 200 grad
Ref: ISO 80000-3 (Quantities and units — Space and time)
Tips
- 💡 90° = π/2 rad = 100 grad. Full circle = 360° = 2π rad = 400 grad.
- 💡 Surveying uses grads; astronomy and navigation use degrees or hours (1h = 15°).