All Free Tools
Every calculator and converter on QuickTools โ finance, health, everyday math and handy utilities. Pick one and get your answer in seconds.
๐ฐ Finance
Paycheck Tax Calculator
Take-home pay after federal, FICA and state taxes. 50-state versions.
Mortgage Calculator
Monthly payment, total interest and true loan cost.
Compound Interest Calculator
See how savings grow with compounding and contributions.
Personal Loan Calculator
Monthly payments and total interest on any loan.
Salary โ Hourly Converter
Convert annual salary to hourly wage and back.
Sales Tax Calculator
Add or reverse-out sales tax on any price.
Tip Calculator
Split the bill and tip fairly in seconds.
๐งฎ Everyday math
Percentage Calculator
Percent of a number, percent change and more.
Unit Converter
Length, weight, temperature, volume, speed.
Age Calculator
Exact age in years, months and days.
Days Between Dates
How many days, weeks or months apart are two dates?
Time Zone Converter
Convert any time between world time zones.
GPA Calculator
Compute your grade point average from courses.
๐ ๏ธ Utilities & health
BMI Calculator
Body Mass Index with metric or imperial units.
Password Generator
Strong random passwords, generated locally.
$100K Salary by State
Where does a $100K paycheck go furthest? Data study.