Angle converter
Converting degrees to radians is a small, specific task, but getting it wrong by even a rounding error can throw off a recipe, a shipping quote, a construction cut list, or a homework answer. This page runs a live Degrees to Radians converter — type a number in deg and get the exact rad equivalent instantly, calculated with the standard conversion factor rather than an approximation. One deg equals 0.01745329 rad, and the calculator below scales that ratio to any amount you enter.
To convert a value from degrees to radians, multiply the number of deg by 0.01745329. That figure comes from expressing both units against the same reference — in this case, angle are compared through a common angle base unit — so the ratio holds no matter how large or small the input is.
Common deg amounts and their rad equivalents, rounded to six decimal places for accuracy:
Angle conversions come up constantly outside of a classroom. Recipes written for a US audience use units while international ones use metric measurements; travel and navigation mix miles, kilometers, and nautical units depending on the country and mode of transport; and technical fields like engineering, medicine, and manufacturing often require converting between systems to match a spec sheet, a prescription, or a purchase order.
Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger. Because this converter applies the exact multiplier every time, the result for degrees to radians is consistent whether you're converting a single small number or a large batch of values one at a time.
1 deg equals 0.01745329 rad. Multiply any deg value by this factor to get rad.
It uses the standard defined conversion factor for degrees and radians, so results are precise to the rounding shown, not a rough estimate.
Yes — use the swap control in the calculator to reverse the direction and convert radians into degrees instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
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| Degrees | Radians |
|---|---|
| 1 deg | 0.017453 rad |
| 5 deg | 0.087266 rad |
| 10 deg | 0.174533 rad |
| 25 deg | 0.436332 rad |
| 50 deg | 0.872665 rad |
| 100 deg | 1.745329 rad |
| 500 deg | 8.726646 rad |
| 1000 deg | 17.453292 rad |