About the author
Chris Terry
Editor, Encore Editorial
Editor at Encore Editorial, Chris Terry sets the editorial standards here and turns dense topics into plain English. He has written widely on education, finance, and consumer markets.
Square roots and radicals, the quadratic formula, slope and line equations, and more. Every tool shows the formula and a worked example, not just the answer.
Each calculator returns the answer and the steps that get you there.
Find the square root of any number and the simplified radical form, with the factoring steps.
Open calculator →Free volume calculator for 6 common shapes: cube, box, sphere, cylinder, cone, and pyramid. Pick a shape, enter the dimensions, and get the volume wit
Open calculator →Free square footage calculator. Enter length and width to get square feet and acres. Add multiple rooms or areas and get a running total. Unit options
Open calculator →Free Ohm's law calculator. Enter any 2 of voltage, current, resistance, or power and solve for the other two. Formulas and worked example included.
Open calculator →Free right triangle calculator. Enter any 2 known values (legs, hypotenuse, or an angle) to solve the rest. Shows all sides, angles, area, perimeter,
Open calculator →Free triangle calculator. Enter any combination of sides and angles (SSS, SAS, ASA, AAS) to find all missing values. Shows area via Heron's formula, p
Open calculator →Solve ax squared + bx + c = 0. Get the discriminant and real or complex roots, step by step.
Open calculator →Two points in, slope out, plus the y-intercept, the equation of the line, and the distance.
Open calculator →Differentiate a function and see the rule applied at each step.
Open calculator →Find definite and indefinite integrals with the worked steps.
Open calculator →Raise any base to any power, including negative and fractional exponents.
Open calculator →Factor whole numbers and quadratics into their building blocks.
Open calculator →Find the greatest common factor of two or more numbers.
Open calculator →Solve for the hypotenuse or a missing leg of a right triangle.
Open calculator →Compute the mean, variance, and standard deviation of a data set.
Open calculator →Find the mean, median, and mode of a list of numbers.
Open calculator →Round any number to a chosen place value or number of decimals.
Open calculator →A number on its own does not help much when you are trying to understand a method or check your homework. Every calculator here pairs the result with the formula and a short worked example, so you can see exactly how the answer was reached. The square root tool simplifies radicals and shows the factoring. The quadratic solver reports the discriminant before the roots. The slope calculator walks from two points to the full line equation. Where a neutral reference helps, we link to sources like Wolfram MathWorld.
Yes. Every tool on MathCalcTools is free to use, with no sign-up. Calculations run in your browser.
Yes. Each calculator shows the formula and a worked, step-by-step example so you can follow the method, not just the answer.
Yes. The site is built mobile-first, so the calculators and steps work on any screen size.
The tools use standard formulas and round results for readability. For graded work, double-check the final figure against your own working.
Editor at Encore Editorial, Chris Terry sets the editorial standards here and turns dense topics into plain English. He has written widely on education, finance, and consumer markets.