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SolveCalc - Free CalcSolver and Scientific Calculator

Arithmetic, trigonometry, roots, powers and logarithms, worked out in the browser tab you already have open. No install, no account, no cost. A lighter build of SolveCalc.

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SC-CM-0000
0
Scientific
sin⁻¹A
cos⁻¹B
tan⁻¹C
√D
x²E
sinF
cosX
tanY
∛M
x³
10ˣ(
eˣ)
2ˣ,
nPr
x!
STO
RCL
M+
M-
Chromebook Ready Client-Side CalcSolver Grades 3-12 No Install Instant Results FERPA & COPPA Friendly Zero Tracking

A Calcsolver That Answers Immediately

Press a key and the answer is already there. Nothing is sent anywhere to be computed: the arithmetic runs in JavaScript on the machine in front of you, which is why the result appears the same on hotel wifi as it does on fibre.

The keypad carries what school maths actually asks for. Brackets and the four operations, powers and roots, sine, cosine and tangent, natural and base-ten logarithms, factorials, percentages, reciprocals, and the constants pi and e. Switch on Code Mode and you can type an expression such as sqrt(225) or log(1000) from the keyboard instead of hunting for the right button.

Calc Solver, CalcSolver, CalcSolve: One Tool, Many Spellings

People arrive here typing the name half a dozen ways. Calcsolver, calc solver, calcsolve, solve calc, solvecalc. They all describe the same idea, a calculator on a web page that solves the problem in front of you, and none of the spellings leads to a different or paid version.

This is the GitHub Pages build of that project, kept deliberately small: the calculator, a handful of focused tools, and short written guides. Its source sits in the open on GitHub, so anything the page does can be read rather than trusted.

Tools for the Jobs a Keypad Handles Badly

Some questions are awkward on a plain calculator. Reducing a fraction, working out which numbers divide evenly into two others, or turning a decimal into a ratio all take several steps and an easy slip. Each of those has its own page here, with the working shown rather than just the answer.

Fraction Calculator
Add, subtract, multiply and divide fractions with the steps shown.
Open
Percentage Calculator
Percentage of a number, increase, decrease and reverse percentages.
Open
Prime Number Checker
Test whether a number is prime and see its factors if it is not.
Open
GCF and LCM Calculator
Greatest common factor and lowest common multiple, with the factors listed.
Open
Roman Numeral Converter
Convert numbers to Roman numerals and read numerals back as numbers.
Open
Times Table Generator
Print or practise any multiplication table up to whatever range you need.
Open

See all 9 tools

Nothing You Type Is Recorded

Because every calculation happens locally, there is no log of your working anywhere, on this server or any other. The site has no accounts and no sign-in form, and the figures you enter never leave the page you entered them on.

It also keeps working on a restricted network. Chromebooks, library machines and school laptops that refuse installs can still open a web page, and a web page is all this is.

Reading Material

The guides cover the reasoning behind the buttons: why the order of operations is fixed, what a logarithm is actually asking, how percentages and fractions convert. The blog is shorter and more practical, mostly about working accurately under exam conditions.

Questions People Ask

What is SolveCalc?
A free scientific calculator that runs entirely in your browser, with a small set of focused math tools and written guides alongside it. No account, no download, no cost. This build is hosted on GitHub Pages and its source is public.
What does calcsolver mean?
Calcsolver, calc solver and calcsolve are all names people use for the same thing: an online calculator that works a problem out for you. Whichever spelling you searched for, this is that tool.
Is it really free?
Yes. There is no paid tier and no sign-in. Everything on the site is open to anyone who loads the page.
Does it work on a school Chromebook?
It is a plain web page, so it loads on any modern browser including managed Chromebooks that block installs. Once loaded it keeps working even if the connection drops.
Do my calculations get sent anywhere?
No. Every calculation is performed by JavaScript on your own device. Nothing you type is transmitted, logged or stored on a server.
How is this different from solvecalc.net?
Same calculator, much smaller site. This build keeps the calculator, nine tools and a handful of guides, with its own writing. The full project, with far more reference material, is at solvecalc.net.