Browser-based calculators
Free online calculators for math, finance & everyday tasks
Get quick answers for equations, savings, measurements, health estimates, conversions, and home projects. Enter your numbers and see the result in your browser.
- Tool library
- 49
- Calculation
- In your browser
- Account
- Not required
Explore Free Calculators by Category
Find the right calculator or utility for your needs, from financial planning to health tracking and math practice.
Featured Online Tools
Start with a selection of useful calculators, then browse the full directory for more specialized tools.
Privacy-First, Browser-Based Tools
Uzi Tools is a collection of free online calculators and tools for math, finance, health, conversions, education, and home projects. Every tool runs entirely in your browser on your device. We do not store tool inputs, require signup, or send your inputs to our servers for calculation. Results are useful for quick estimates and comparisons, but important financial, health, or project decisions should be checked against an appropriate professional or official source.
Finance Tools
Covering mortgages, investment returns, retirement savings, paycheck, and debt payoff planning. Use them to compare scenarios and estimate payments.
Health Tools
Including BMI, BMR, TDEE, body fat percentage, and pregnancy calculators for general education and planning.
Math, Education & Everyday
Including graph plotter, quadratic equation solver, permutations & combinations, age on planets, clothing size conversion, grade and GPA calculator, reading and typing speed.
Converters & Calculators
Including number base conversion, universal units, data sizes, date difference, and Roman numerals.
Home, Auto & DIY
Including paint coverage, concrete volume, tire sizes, auto loans, solar ROI, and landscape materials.