Calculate sine, cosine, tangent, logarithms, powers and square roots. Choose degrees or radians for trigonometric functions; the choice does not affect logarithms or powers.
Degrees are converted to radians using radians = degrees × π / 180. log means base 10; ln means base e. A power uses the entered base and exponent.
sin(30°) = 0.5; sin(π/6 radians) is approximately 0.5. log(1000) = 3. A base of 2 with exponent 10 gives 1024.
Real logarithms require positive inputs. Tangent is undefined at 90° + 180°k; values very close to these angles are rejected. Fractional powers of negative bases may fall outside this real-number calculator. This is a numerical tool, not symbolic algebra.
Editorial responsibility: Nicolas Belotti · Methods and testing · Report an error
English edition: 16 September 2026.