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Access powerful financial, mathematical, and business calculators. Make informed decisions with our suite of professional tools.
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Finance, health, math, education, and everyday calculators in a single fast, consistent interface.
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All calculations run in your browser. No accounts, no logins, and no data stored on our servers.
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Explore Free Calculators by Category
Find the right calculator or utility for your needs, from financial planning to health tracking and math practice.
Most Popular Online Tools
Quick access to our most frequently used free online calculators.
Privacy-First, Browser-Based Tools
Uzi Tools is a collection of free online calculators and tools for finance, health, and everyday use. Every tool runs entirely in your browser on your device. We don't store your data, require signup, or send your inputs to any server. You get instant results with full privacy—ideal for quick estimates, planning, and decision-making.
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. Great for personal education and general 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.