Convert Between Units of Angle
Angle measures rotation or direction change, and it appears in geometry, surveying, machining, and mechanical design. Common units include degrees, radians, and revolutions. Converting angle units is especially useful when mixing CAD outputs (often degrees) with engineering formulas (often radians). Trig functions in most programming languages assume radians, which is a frequent source of “the math looks right but the output is wrong.”
Popular Angle Conversions
Based on conversions run in the last 60 days.
- deg to nrad · 6
- Grad to rad · 4
- Mrad to rad · 3
- prad to arcsec · 3
- arcsec to sr · 2
- arcsec to prad · 2
- arcsec to μrad · 1
- rad to rad · 1
- μrad to rad · 1
- μrad to deg · 1
About Angle Conversions
Helpful context and notes for converting Angle units.
Angle conversions show up in slope and grade computations, circular motion, gear ratios, navigation bearings, and any work involving arcs. A full revolution is 360 degrees or 2π radians. When tolerances are tight, be cautious about rounding, because small angular differences can create large linear offsets over long distances. This is why survey notes and alignment tables are picky about units and precision.
Practical tip: if you are doing trig in Excel, Python, JavaScript, or most calculators, confirm whether the function expects radians or degrees. A quick anchor is that 90 degrees equals π/2 radians (about 1.5708). If you convert and your sine or cosine output looks “stuck,” it is often a degrees vs radians mismatch rather than a bad formula.
Frequently Asked Questions
Fun Fact
In medieval times, a 'moment' was 1.5 minutes. So when someone says 'just a moment', you are officially allowed ninety seconds before rolling your eyes.
Supported Units
Common and engineering-specific units supported for this conversion.
- arcmin (Arc Minutes)
- arcsec (Arc Seconds)
- crad (centiradians)
- darad (decaradians)
- drad (deciradians)
- deg (Degrees)
- Grad (gigaradians)
- hrad (hectoradians)
- krad (kiloradians)
- Mrad (megaradians)
- μrad (microradians)
- mrad (milliradians)
- nrad (nanoradians)
- prad (picoradians)
- rad (radians)
- rev (Revolutions)
- sr (Steradians)
- Trad (teraradians)
Unit Categories
Explore the types of units you can convert on this site.