Loading…
About Equation Solver
Equation Solver — free, private, browser-based calc tool
Solve linear systems, polynomial roots, and single-variable equations. It runs in your browser, so the file is processed on your own device.
Why use Equation Solver
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Type or paste your input.
- 2Pick the options you want.
- 3Copy or save the result.
What Equation Solver does
Solve linear systems, polynomial roots, and single-variable equations.
How it works
math.js for symbolic computation, KaTeX for rendering LaTeX, and arbitrary-precision arithmetic via big.js / decimal.js. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.
Frequently asked questions
Does Equation Solver upload my files?+
No. Equation Solver runs in your browser and processes the file on your device. Nothing is sent to our servers.
Is Equation Solver free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.
Related calc tools
Percent Calculator
Find a percent of, percent change, or what percent X is of Y.
Age Calculator
Calculate exact age — years, months, days, hours, and minutes.
BMI Calculator
Body Mass Index with category and healthy weight range.
Loan Calculator
Monthly payment, total interest, and amortization for any loan.
Tip Calculator
Bill, tip percent, and how many people — get the per-person total.
Temperature Converter
Celsius, Fahrenheit, Kelvin, Rankine — convert any to all.