Scientific
Free scientific calculators, unit converters and random number generators. Accurate tools for students and engineers.
Scientific calculators handle the mathematics that go beyond basic arithmetic — trigonometry, logarithms, exponents, unit conversions, and number generation. These tools are built for students, engineers, teachers, and professionals who need accurate results quickly without installing software.
The Scientific Calculator supports standard and inverse trigonometric functions (sin, cos, tan), natural and base-10 logarithms, powers, roots, and respects the standard order of operations (BODMAS/PEMDAS) exactly as defined in mathematical convention. Results are computed in real time as you type.
The Random Number Generator uses JavaScript's cryptographically seeded pseudo-random number generator (PRNG) to produce statistically uniform results within any range you define — suitable for simulations, sampling, games, and fair draws. All calculations run entirely in your browser; no data is sent to our servers.