Angle Converter
FreeConvert angles between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians with live DMS support.
Runs entirely in your browser.
Quick presets
Degrees, Minutes, Seconds (DMS)
Recent Activity
Visible to everyone. Last 20 uses across all visitors, newest first.
45° (0.125 turns)
1 day ago
What this tool does
This tool converts an angle between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians, right in your browser, with live bidirectional conversion, DMS support, and a visual protractor.
Problems it solves
- Converting between degrees and radians for math, physics, or programming.
- Converting coordinates given in DMS notation into decimal degrees, and back.
- Working with gradians in surveying or milliradians in optics and shooting sports.
- Quickly visualizing how large an angle is with the built-in protractor diagram.
Frequently asked questions
›What units does this converter support?
Degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians, plus DMS (degrees-minutes-seconds) notation. Typing into any field instantly updates every other unit.
›What is a gradian?
A gradian (or gon) divides a full circle into 400 equal parts instead of 360, so a right angle is exactly 100 gradians. It is mainly used in surveying and some European engineering contexts.
›What is DMS notation and when is it used?
DMS (degrees, minutes, seconds) splits an angle into a whole number of degrees, 60 minutes per degree, and 60 seconds per minute, similar to how time is divided. It is common in geography, navigation, and astronomy for expressing latitude, longitude, and celestial coordinates.
›What is a milliradian used for?
A milliradian (mrad) is one-thousandth of a radian and is widely used in optics, rifle scopes, and artillery because it approximates 1 unit of size at 1000 units of distance, making range and offset calculations simpler.
›How does the circle fraction work?
It shows what portion of a full 360 degree turn your angle represents, for example 90 degrees is a quarter turn (0.25) and 270 degrees is three quarters of a turn (0.75).
Related Tools
Calculators
Box and Whisker Plot Maker
Turn one or more datasets into box-and-whisker plots with five-number summary, mean, standard deviation, and outlier detection.
FreeCalculators
1031 Exchange Calculator
Estimate deferred and taxable gain on a 1031 like-kind property exchange, with a recapture vs. capital gains tax breakdown and a 45/180-day deadline tracker. Free, private, runs in your browser.
FreeCalculators
0-60 & Quarter Mile Calculator
Estimate a car's quarter mile time and trap speed from its horsepower and weight, with a power-to-weight breakdown and reference-car comparison. Free, private, runs in your browser.
FreeCalculators
1099 Tax Calculator
Estimate your self-employment tax and federal income tax on 1099 income, with a quarterly payment breakdown and real IRS deadline dates. Free, private, runs in your browser.
Comments (0)
Found this tool useful? Leave a comment, share a tip, or tell us how we can make it better.
No comments yet. Be the first to share your thoughts!