Angle Converter: Convert Degrees, Radians and More
The Angle Converter changes values between degrees, radians, gradians, arcminutes, arcseconds, turns, milliradians and quadrants. Each unit is an exact ratio of π relative to the radian: a full turn is 2π rad, a degree is π/180 rad, and a gradian is π/200 rad. Milliradians mean mathematical mrad (0.001 rad), not NATO artillery mil.
The Angle Converter is a browser-based tool for converting values between common angle units. Use it to convert degrees, radians, gradians, arcminutes, arcseconds, turns, milliradians and quadrants. Enter an angle, select its source unit and choose the target unit to see the converted figure.
The conversion is based on each unit’s exact relationship to the radian. A full turn, or revolution, is 2π rad; one degree is π/180 rad; and one gradian, also called a gon, is π/200 rad. The milliradian in this converter is mathematical mrad, equal to 0.001 rad. It is not the NATO artillery mil, which is approximately 6283 per turn.
Angle units express the same kind of measurement in different ways, so converting between them helps when a formula, document or audience expects a particular unit. Degrees and radians are both widely used to describe angles, while gradians, arcminutes, arcseconds, turns and quadrants offer other ways to express a rotation. Converting a value can make comparisons clearer and avoid doing the ratios by hand.
The Angle Converter runs entirely in your browser. Your input is processed on your device and is not sent to a server; once the page has loaded, the converter keeps working offline. The tool is free to use, making it useful for developers, DevOps engineers, students and anyone who needs a quick angle-unit conversion.
Step 1: Enter the angle value you want to convert.
Step 2: Choose the source unit for your value, such as degrees or radians.
Step 3: Choose the target unit you want to convert to.
Step 4: Read the converted figure, then repeat for other values as needed.
Use case: Convert angle measurements when source and target systems use different units, so everyone can work from a value they recognize.
Use case: Check an angle in the unit your audience uses before sharing it in documentation, a report or a discussion.
Use case: Convert a set of values instead of rounding each one by hand, helping reduce manual calculation work.
Use case: Compare a value expressed in degrees with the same angle in radians when working with mathematical formulas.
Use case: Translate measurements between gradians and degrees when collaborating with people who use different angle conventions.
Use case: Check whether a milliradian value uses mathematical mrad rather than the NATO artillery mil convention.
Use case: Convert turns, quadrants, arcminutes or arcseconds into another supported unit when those measurements appear in technical material.