science

Free online scientific calculator with sin, cos, tan, log, factorial, powers, and parentheses. Supports degrees/radians and keyboard input.

Calculate pH, pOH, H+ and OH- concentrations from hydrogen ion concentration or pH value. Includes interactive pH scale visualization with color coding.

Calculate serial dilution concentrations step by step. Enter stock concentration, dilution factor, and number of steps. Visual bar chart and detailed table output.