Free Math & Conversion Tools
Convert units, calculate percentages, and solve everyday math problems with free browser-based tools. Whether you need a unit converter, tip calculator, or binary-to-hex conversion, get accurate results instantly.
- Supports length, weight, temperature, and more
- Precise calculations in real time
- No app download or registration
- Free for unlimited use
All Math & Conversion (10)
Unit Converter
Convert length, weight, temperature, speed, and more.
Percentage Calculator
Calculate percentages, ratios, and percentage change.
Fraction to Decimal
Convert fractions to decimals and decimals to fractions.
Roman Numeral Converter
Convert between integers and Roman numerals (1–3999).
Number to Words
Convert numbers to English words in US or UK style.
Binary Hex Converter
Convert between binary, decimal, hexadecimal, and octal.
Age Calculator
Calculate exact age in years, months, days, and more.
Date Difference Calculator
Find the difference between two dates in days, weeks, and months.
Tip Calculator
Calculate tips and split bills among multiple people.
Scientific Notation Converter
Convert between standard and scientific notation.
Why use free math & conversion tools from Pinnacle Toolbox?
Every tool in our math & conversion collection runs entirely in your browser. There is no software to install, no account to create, and no data uploaded to our servers. Whether you need a quick conversion or a daily workflow utility, our tools are free, fast, and private.
Browse all 10 tools above, or explore our full collection of 60+ free online utilities across text, images, code, math, and productivity.