All calculators
Every CalcNests tool, organized by category. Pick a category below or use search to jump straight to a calculator.
Money
Budgeting, loans, tips, taxes, and everyday financial math.
Math
Core math tools for percentages, averages, and more.
Date & Time
Ages, durations, countdowns, and date arithmetic.
Education
GPA, grades, and academic planning calculators.
Home
Household, mortgage, and home-project calculators.
Everyday
Health, units, and daily-life conversions.
US Tools
Calculators built around US-specific conventions.
Money
Percentage Calculator
Money
Find percentages, increases, and decreases instantly.
Tip Calculator
Money
Calculate tips and split the bill fairly.
Discount Calculator
Money
Find sale prices and total savings.
Mortgage Calculator
Money
Estimate your monthly mortgage payment.
Rent Calculator
Money
Figure out how much rent you can afford.
Loan Calculator
Money
Estimate monthly loan payments.
Interest Calculator
Money
Calculate simple and compound interest.
Salary Calculator
Money
Convert salary between hourly, weekly, and annual.
Overtime Calculator
Money
Calculate overtime pay and total earnings.
Split Bill Calculator
Money
Split a bill evenly or by share.
Sales Tax Calculator
Money
Calculate sales tax and total price.
Paycheck Calculator
Money
Estimate take-home pay after taxes.
Math
Date & Time
Age Calculator
Date & Time
Calculate exact age from a birth date.
Date Calculator
Date & Time
Add or subtract days from a date.
Time Calculator
Date & Time
Add or subtract hours and minutes.
Days Between Dates
Date & Time
Count the days between two dates.
Countdown Calculator
Date & Time
Count down to any future date.
Education
Home
Everyday
BMI Calculator
Everyday
Calculate Body Mass Index.
Fuel Cost Calculator
Everyday
Estimate trip fuel costs.
Unit Converter
Everyday
Convert between common units.
Temperature Converter
Everyday
Convert Fahrenheit, Celsius, and Kelvin.
Length Converter
Everyday
Convert feet, meters, inches, and more.
Weight Converter
Everyday
Convert pounds, kilograms, and ounces.
US Tools
Minimum Wage Calculator
US Tools
Calculate earnings at minimum wage by state.
State Sales Tax Calculator
US Tools
Calculate sales tax using each state's actual rate.
State Paycheck Calculator
US Tools
Estimate take-home pay including state income tax.
State Mortgage Calculator
US Tools
Estimate a mortgage payment using state property tax rates.
Cost of Living Calculator
US Tools
See what salary you'd need in a different state.