Arcsin Calculator
Find the angle whose sine equals a given value between −1 and 1.
Calculate
Enter your values below.
Result
Angle
0
Formula used
arcsin(x), valid for −1 ≤ x ≤ 1
Example: arcsin(0.5) = 30°.
How to use this calculator
- Enter Value (−1 to 1).
- Choose Output unit.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
Why must the value be between -1 and 1?
Sine's output never leaves that range, so arcsin has no answer outside it.
What does arcsin return?
The angle (in your chosen unit) whose sine equals the value you entered.
What is arcsin(0)?
0°.
What is arcsin(1)?
90° (or π/2 radians), the maximum.