Angle
180 Deg
Radians
3.141593 rad
Data Tools
Degrees, Radians, Gradians, and Turns Converter
Convert degrees, radians, gradians, and turns in your browser with linked inputs—useful for CSS rotate(), Canvas, and Three.js work where Math.PI conversions are easy to get wrong. Results stay on the page.
MathUnitsDesign
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数据格式
Angle Converter
180°
归一化 180°
Position 负 X 轴
CSS rotate(180deg)
Formula: 180° × π / 180 = π rad
请输入任意角度数值
已复制角度结果
Use cases
- Translate designer degree values into radians for motion code
- Check CSS rotate() angles against canvas math
- Normalize mixed angle units in notes or specs
How to use
- Enter a value in any of the four angle units
- The other units update together
- Copy the result
Example input and output
FAQ
Are negative angles supported?
Yes. Negative values represent the opposite rotation direction.
Is the value normalized to one turn?
The tool also shows a normalized degree reading so large spins are easier to compare.
Tools
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Aspect Ratio Calculator
Aspect Ratio and Proportional Size Calculator
Compute and lock an aspect ratio in your browser. Derive a ratio from width and height, or change one side while the other stays proportional. Includes common presets and a preview for cropping, video frames, and responsive layouts.
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