Home Online Calculator Scientific Calculator Scientific Calculator This scientific calculator requires Javascript. Please enable Javascript in your browser's preferences and then reload this page if you wish to use this scientific calculator. For more complex problems use the options below: Decimal (Mixed Notation) Decimal (Scientific Notation) Decimal (Engineering Notation) Hexadecimal Octal Binary History: Math Constants: last result e ln(10) ln(2) log10(e) log2(e) π sqrt(1/2) sqrt(2) Math Functions: abs acos asin atan atan2 ceil cos exp floor log max min pow random round sin sqrt tan Copyright Stephen Ostermiller 2002-2006 Previous Article Net Present Value (NPV) Next Article Simple Interest Calculator