Plane Angle & Frequency Converter
Convert geometry angles and rotational frequencies with exact trigonometric constants.
Converted Value
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All Angle & Frequency Units
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How to Use Angle Converter
- Choose your mode: Plane Angle or Frequency / Rotational Speed.
- Enter the numerical angle or frequency value.
- Select the input and target unit scales.
- Copy your computed result with full mathematical precision.
Technical Specifications & How It Works
A full circle consists of 360 degrees, 2π radians, or 400 gradians: 1 radian equals exactly 180/π degrees (approx 57.2958°).
Rotational frequency converts between cycles per second (Hertz) and revolutions per minute (RPM = Hz × 60).
Calculations use native JavaScript high-precision Math constants entirely in your browser.
Frequently Asked Questions
How many radians are in 180 degrees?
There are exactly π radians (approx 3.14159 rad) in 180 degrees.
What is a gradian?
A gradian (gon) divides a right angle into 100 parts, meaning a full circle is 400 gradians.
How do I convert RPM to Hertz?
Divide RPM by 60 to obtain Hertz (Hz, cycles per second).
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