Most angle converters stop at degrees and radians. Our new Angle Converter adds the one most tools skip: gradians — the unit that makes a right angle exactly 100 instead of 90.
- Three units, one pivot — degrees, radians, and gradians, all converted through degrees so the math stays simple and auditable instead of a tangle of direct formulas.
- Live, bidirectional conversion — change the value or either unit and the result updates instantly, no submit button.
- Swap button — flip the From and To units in one click when you realize you picked the wrong direction.
- All three units at once — a reference table shows your entered value converted into degrees, radians, and gradians simultaneously, so you don’t have to keep re-selecting “To.”
- Shareable links — the URL updates as you type, so you can copy and share a link that opens with your exact numbers filled in.
Verified against the textbook cases: 180° is exactly π radians (≈3.14159265 rad) and 200 gradians; 90° is π/2 radians (≈1.5708 rad) and exactly 100 gradians — the round number gradians exist to produce. Try it with any angle, positive or negative, up to any number of turns.