Our free online scientific calculator supports all the functions you would find on a standard scientific calculator, including trigonometric functions (sin, cos, tan and their inverses), logarithms (log base 10 and natural log), powers and roots, factorials, and constants like π and e. It follows standard mathematical order of operations (BODMAS/BIDMAS). The calculator is designed to work on all devices including mobile phones and tablets, making it a convenient alternative to a physical calculator for students, engineers, and scientists.