Math & Science Tools
Percentage, BMI, fractions, scientific calc & more — 10 free tools, no signup.
Scientific Calculator
Full scientific calculator with history
Percentage Calculator
% of, % change, % difference, add/remove %
Fraction Calculator
Add, subtract, multiply, divide fractions
Prime Number Checker
Check if any number is prime
GCD & LCM Calculator
Greatest common divisor and least common multiple
BMI Calculator
Body mass index with healthy range chart
Calorie Burn Calculator
Calories burned by activity and duration
Square Footage Calculator
Area of rooms in any shape
Tip & Bill Splitter
Tip amount and split by number of people
Statistics Calculator
Mean, median, mode, std dev from data set
Other Tool Categories
Finance
12 tools
Tax
10 tools
Mortgage
10 tools
Salary & Pay
10 tools
Insurance
8 tools
Credit & Debt
8 tools
Small Business
12 tools
E-Commerce
8 tools
Legal
6 tools
Health Finance
8 tools
Image Tools
12 tools
SEO & Marketing
15 tools
Unit Converters
15 tools
Crypto & Investment
15 tools
Productivity Tools
15 tools
Social Media Tools
15 tools