Education & Science Tools

Solve common physics formulas online: speed, acceleration, force, work, power, Ohm's law, density and kinetic energy. Enter the known values, leave the unknown blank. Runs locally.

Identify the number of significant figures in a value and round it to any number of sig figs online. Ideal for lab data and science homework, computed locally in your browser.

Convert between decimal numbers and scientific notation online, in both directions, with optional significant digits and engineering notation. Large numbers use string math, fully local.

Browse the periodic table of all 118 elements online. View atomic number, symbol, name, relative atomic mass and category, with instant search and category filters. Runs locally.

Solve quadratic equations online. Enter coefficients a, b and c to get the discriminant, the real or complex roots and the full solution steps. Runs locally in your browser, nothing is uploaded.

Calculate permutations A(n,k), combinations C(n,k) and factorials online, plus binomial probabilities. Exact big-integer results and formulas are shown, computed locally in your browser.

Calculate the molar mass of any chemical formula online. Parse elements, parentheses and hydrates to get the total molar mass and the elemental mass fractions. Runs locally in your browser.