15 degrees to radians
0.2618 rad
15° = 0.2618 rad.
radians
0.2618rad
15° = 0.2618 rad
In short
How many radians is 15 degrees?
15° = 0.2618 rad. 1 degree = 0.017453 radians, so the working is 15 × 0.017453 = 0.2618.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 degree = 0.017453 radians 15 × 0.017453 = 0.2618
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (rad) | Off by |
|---|---|---|
| Whole number | 0 | −0.26180 |
| 1 decimal | 0.3 | +0.03820 |
| 2 decimals | 0.26 | −0.00180 |
Round trip: take 0.2618 rad back the other way and you land on 15.0000° — a drift of 0.0000°. That gap is the rounding, not the conversion.
What 15 ° looks like
15 °
Half of a 30 degree angle and π/12 in radians, the smallest step most trigonometry tables bother to tabulate.
Frequently asked questions
What is 15 degrees in radians?
15 degrees is 0.2618 radians. 1 degree = 0.017453 radians, so the working is 15 × 0.017453 = 0.2618.
How accurate is 0.2618 rad?
Rounding to 0.2618 rad and converting straight back gives 15.0000°, a drift of 0.0000° from the 15 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Degrees to Radians Converter
Convert degrees to radians — trigonometry, calculus, and anything using π.
Open the degrees to radians converter →