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The <angle> CSS data type represents an angle value expressed in degrees, gradians, radians, or turns. It is used, for example, in rotate and skew transform values.

Positive numbers represent clockwise angles, while negative numbers represent counterclockwise angles. For static properties of a given unit, any angle can be represented by various equivilent values. For example, 90deg equals -270deg, and 1turn equals 4turn. For dynamic properties, like when applying a transition on the transform property, the effect will nevertheless be different.

Syntax

An angle consists of a <number> followed by a unit. As with all dimensions, there is no space between the unit literal and the number. The angle unit is optional after the number 0.

Units

deg
Represents an angle in degrees. One full circle is 360deg. Examples: 0deg, 90deg, 14.23deg.
grad
Represents an angle in gradians. One full circle is 400grad. Examples: 0grad, 100grad, 38.8grad.
rad
Represents an angle in radians. One full circle is 2π radians which approximates to 6.2832rad. 1rad is 180/π degrees. Examples: 0rad, 1.0708rad, 6.2832rad.
turn
Represents an angle in a number of turns. One full circle is 1turn. Examples: 0turn, 0.25turn, 1.2turn.

Examples

Angle90.png A right angle: 90deg = 100grad = 0.25turn 1.5708rad
Angle180.png A flat angle: 180deg = 200grad = 0.5turn 3.1416rad
AngleMinus90.png A right angle (counterclockwise): -90deg = -100grad = -0.25turn -1.5708rad
Angle0.png A null angle: 0 = 0deg = 0grad = 0turn = 0rad

Specifications

Specification Status Comment
CSS Values and Units Module Level 3
The definition of '<angle>' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 2 (528.17) (Yes) 3.6 (1.9.2) 9.0 (Yes) 4.0 (528.17)
turn unit (Yes) (Yes) 13.0 9.0 (Yes) 10
Feature Android Chrome Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? (Yes) (Yes) (Yes) ? No support ?
turn unit No support (Yes) (Yes) 13.0 ? No support No support