toolooo · Calculators 187+ Calculators.
Every Category.
From finance to physics, everyday life to sports — a fast, clean, ad-free calculator for every problem. Always free.
4 MVP Calculators
These are being built as the first fully functional calculators.
Profit Margin Calculator
Calculate gross, net, and operating profit margins for your business.
Percentage Calculator
Calculate percentages, discounts, increases, and percentage changes easily.
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes.
Website Cost Calculator
Estimate the total cost to build and maintain a website for your needs.
All 16 Calculator Categories
Click a category to see all calculators inside it.
Everyday Life
Age, dates, coin flips, and daily utility calculators.
Finance
Investment, ROI, profit margin, and money calculators.
Math
Percentages, algebra, statistics, and number theory.
Health & Fitness
BMI, calories, hydration, and wellness calculators.
Unit Conversion
Convert length, weight, temperature, volume, and more.
Time & Date
Date differences, time zones, countdowns, and durations.
Automotive
Fuel efficiency, speed, distance, and vehicle calculators.
Text Tools
Word count, reading time, character analysis, and string tools.
Physics
Speed, force, energy, and science formula calculators.
Sports
Pace, pace per mile, training, and sports performance calculators.
Food & Cooking
Recipe scaling, nutrition, cooking time, and kitchen math.
Construction
Area, volume, materials estimate, and building calculators.
Photography
Exposure, aperture, DOF, and camera settings calculators.
Travel
Distance, fuel cost, timezone, and trip planning tools.
Developer Tools
Base64, JSON formatter, regex tester, and color converters.
Color Tools
Color palettes, shades, contrast checker, and hex converters.
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