Basic Calculator

Basic mode has standard arithmetic (+, −, ×, ÷), percentage, and sign flip. Scientific mode adds π, e, square root, power, and trig/log functions (sin, cos, tan, log, ln).

Enter an angle, then press sin, cos, or tan. Use the DEG/RAD button to switch between degrees and radians. Make sure the mode matches your problem.

No. All calculations run in your browser. We do not store or send your inputs or results.

Yes. The calculator is responsive and works on phones and tablets. Scientific functions are available in scientific mode.