Conversion family
Angle conversion calculators
Use angle conversions for geometry, trigonometry, surveying, ramps, slopes, and grades.
These 30 guides cover the most commonly searched unit pairs. Each page includes the exact relationship, worked values, and a reverse-conversion path.
How to use angle conversions
Choose the guide whose source unit matches the value you already have and whose target unit matches the format you need. Enter the value without rounding it first, review the displayed relationship, and round only the final answer to the precision your task requires. Popular starting points in this family include Arcminutes to Arcseconds, Arcminutes to Degrees, Arcminutes to Gradians.
Angle conversions are useful in geometry, surveying, navigation, machining, and slope work. Degrees, radians, gradians, arcminutes, and arcseconds describe the same rotation with different scales; grade or slope values may use a tangent relationship instead of a simple multiplier. Unit symbols can be case-sensitive, and similarly named units may belong to different systems, so check the label as well as the abbreviation before relying on the result.
- Keep the original value at full precision until the final step.
- Confirm the unit symbol, system, and measurement type.
- Use the reverse guide to check that the result returns to the starting value.