### Angle Conversion

to

input
= 63.66197832
= 0.63662 × 102
= 0.63662E2
= 0.63662e2

= 127.32395665
= 1.27324 × 102
= 1.27324E2
= 1.27324e2

= 190.98593497
= 1.90986 × 102
= 1.90986E2
= 1.90986e2

= 254.64791329
= 2.54648 × 102
= 2.54648E2
= 2.54648e2

= 318.30989161
= 3.1831 × 102
= 3.1831E2
= 3.1831e2

The radian is the standard unit of angular measure, used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is just under 57.3 degrees.

Name of unitSymbolDefinitionRelation to SI unitsUnit System

The angle subtended at the center of a circle by an arc whose length is equal to the circle's radius. One full revolution encompasses 2π radians.

Metric system SI

#### conversion table

1≈ 63.6619783227146≈ 381.97186993629
2≈ 127.323956645437≈ 445.633848259
3≈ 190.985934968148≈ 509.29582658172
4≈ 254.647913290869≈ 572.95780490443
5≈ 318.3098916135710≈ 636.61978322714

The gradian is a unit of measurement of an angle, equivalent to 1/400 of a turn, 9/10 of a degree, or π/200 of a radian.

Name of unitSymbolDefinitionRelation to SI unitsUnit System

≡  1400 of a revolution ≡  π200 rad ≡ 0.9°

Metric system SI

### conversion table

1≈ 0.0157079636≈ 0.094247778
2≈ 0.0314159267≈ 0.109955741
3≈ 0.0471238898≈ 0.125663704
4≈ 0.0628318529≈ 0.141371667
5≈ 0.07853981510≈ 0.15707963

1≈ 63.6619783
0.0157080≈ 1

### Conversion in other languages

You can find the conversion in other languages in the following:

### Legend

SymbolDefinition
exactly equal
approximately equal to
=equal to
digitsindicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)