Angle Converter

This free angle converter converts between degrees, radians, gradians (gon), arcminutes, arcseconds, milliradians, mils (NATO), compass points, sextants, octants, signs, quadrants and full revolutions (turns) using exact math — handy for geometry, trigonometry, surveying, navigation and programming. handy for geometry, trigonometry, surveying, navigation and programming.

Beyond a plain From/To conversion it does what most single-purpose calculators don't: it accepts degrees-minutes-seconds (DMS) input like12°30'15" (or plain12 30 15), shows the result as a simplified symbolic multiple of π where possible (for exampleπ/6 rad instead of only 0.523598…), draws a live preview of the angle, lists the same value in every supported unit at once, and lets you pick the decimal precision or copy the result with one click.

Quick reference: a full circle is 360°, 2π radians, 400 gon, 6400 mils, 32 compass points or 1 revolution. A right angle is 90° = π/2 rad = 100 gon. To convert degrees to radians multiply by π/180; to convert radians to degrees multiply by 180/π.