Degrees ↔ radians converter

Client

Switch between degrees (360° circle) and radians (2π)—the usual first step before sin/cos on calculators or code.

About Degrees ↔ radians converter

Convert angle measures between degrees and radians—type 45 deg or 1.5708 rad, local trig helper. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

45° = 0.7853981634 rad

Nearby workflows on Toolcore

  • Trigonometry calculator (degrees) — sin, cos, and tan of an angle in degrees—local double-precision trig. when units or numeric output should be checked on a related calculator.
  • Polar ↔ rectangular — Convert r∠θ° to a+bi or the reverse—degrees, local trig. when units or numeric output should be checked on a related calculator.
  • Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
  • Logarithm calculator — Compute log_b(x) for any valid base and value—natural, base-10, or custom—in your browser. when units or numeric output should be checked on a related calculator.

Common use cases

  • Convert homework angles before using a radian-only API.
  • Double-check π/4 ≈ 45° for trigonometry drills.

Common mistakes to avoid

  • Ambiguous bare number

    Add deg or rad so the tool knows which unit you mean.

FAQ

Which is default?

Suffix disambiguates—45 deg vs 0.785 rad.

Negative angles?

Supported—rotation direction is preserved.

More tools

Related utilities you can open in another tab—mostly client-side.