A focused collection of math tools that run entirely in your browser. The fraction calculator handles addition, subtraction, multiplication, division, and simplification and shows the step-by-step working so the result can be checked or learned from. The Roman numeral converter translates between Arabic numbers and Roman numerals from 1 to 3,999, with a reference table of subtractive pairs.
Each tool uses plain JavaScript arithmetic so calculations are exact at common precision and instant as you type. There is no account, no installation, and no analytics. The same tools work on a phone or laptop and produce identical results.
Results and step-by-step working appear instantly as you type.
Copy the result or use the reference tables for further guidance.
When to use these tools
Use the fraction calculator for homework, cooking ratios, or carpentry measurements. The step-by-step output makes it useful for learning how the operation works rather than just getting an answer.
Use the Roman numeral converter for dates on monuments and books, copyright marks (MCMLXIV), and outline numbering. The reference table covers subtractive pairs like IV, IX, XL, XC, CD, and CM.
For percentage operations, the dedicated percentage calculator covers the three most common operations. For unit conversion math, the unit converter handles length, weight, temperature, speed, and volume.
Frequently asked questions
Are these math tools free?
Yes. All tools are completely free to use. No account, no payment, no registration required.
Do I need to create an account?
No. Open any tool and use it immediately. Nothing is stored or logged.
How do these tools work?
All calculations run locally in your browser using JavaScript. No data is sent to our servers.
What math tools are available?
The collection currently includes a fraction calculator (add, subtract, multiply, divide, and simplify fractions) and a Roman numeral converter (convert between Arabic numbers and Roman numerals).