Free Online Calculator Tools
Fast calculators for tips, percentages, dates and more — designed for everyday use.
Basic Calculator
A clean, fast calculator for everyday math.
Scientific Calculator
Trig, log, powers and constants in one calculator.
Percentage Calculator
Calculate percentages, increases and decreases.
Tip Calculator
Split bills and calculate tips instantly.
Discount Calculator
Find sale prices and total savings instantly.
BMI Calculator
Body Mass Index calculator in metric or imperial units.
Loan Calculator
Estimate monthly payments and total interest.
Age Calculator
Calculate exact age in years, months and days.
Date Difference Calculator
Find the days, months and years between two dates.
Unit Converter
Convert length, weight and volume between units.
About our calculator tools
Every tool in this category was built to be fast, private, and easy to use. Most run completely in your browser, so your files never leave your device. Whether you're working from a phone, tablet, or laptop, you'll get the same instant experience without sign-ups or watermarks.
Pick a tool above to get started, or use the search bar to jump straight to what you need. New utilities are added regularly based on what people search for most.