This is a full text calculator. Just enter your formula in the text box and tap the '=' button. You can use the Google calculator as well (e.g. for unit conversions).
Available functions and constants: sin, cos, tan, asin, acos, atan, sqrt, exp, log, pow, abs, round, ceil, floor, random, PI, E, LN2, LN10, LOG2E, LOG10E, SQRT2, SQRT1_2