About CalcSolver

CalcSolver is a free online scientific calculator and math solver. We built it for one job: give students, teachers and everyday users a fast, honest answer to a math problem, in the form they actually need, with nothing to install and no account to make.

What CalcSolver Is

CalcSolver is a browser calculator that reads a whole expression, follows the order of operations and shows the answer straight away. When the answer is a clean fraction, it shows that too, so 0.625 also appears as 5/8. It covers trigonometry in degrees or radians, logarithms, powers and roots, percentages, factorials, combinations and permutations, with memory keys, a history of recent answers and a scratchpad for your working.

Everything runs on your own device. What you type is never sent to us, and the calculator keeps working even if your connection drops after the page loads.

What You Can Do Here

Scientific calculatorTrig, logs, roots, fractions, nCr and memory keys in one place. Everyday math toolsFractions, percentages, averages and solve-for-x checks. Formula cheat sheetAlgebra, trig, geometry and statistics formulas you can type in. Math gamesSix short practice games in Code Mode, from Math Sprint to Fraction Duel.

How We Keep Answers Accurate

Every calculation follows standard math rules: brackets first, then powers and roots, then multiplication and division from left to right, then addition and subtraction. Answers are shown to 12 significant digits, tiny floating-point leftovers are cleaned up, and impossible calculations get a plain-language message instead of an error code.

Before we publish an example on this site, we run it through the live calculator. Facts about exams, prices and standards link to the official or original source. If you ever spot a mistake, please tell us and we will fix it.

What We Believe In

Free for everyone. Every feature is free, with no trial, paywall or sign-up.
Private by design. Your history, notes and settings stay in your own browser. See our privacy policy.
Honest about limits. CalcSolver is a numeric calculator. It does not graph or do symbolic algebra, and it is not a replacement for the calculator your exam requires.
Learning first. Fraction answers, a visible expression, history and practice games help you understand the method, not just copy a number.

Who Runs CalcSolver

CalcSolver is an independent website. Suggestions, bug reports and corrections go straight to the people who build and maintain it, and we use them to decide what to fix and build next.

The site is free to use under our terms of use. Please also read our disclaimer, which explains how to use the results responsibly.

Have an idea or found a bug?

We read every message and use it to make CalcSolver better.