Free online calculators for money, work and dates
Fast, simple calculators for people in the United States. No sign-up, and your numbers stay in your browser.
Popular calculators
- Mortgage CalculatorEstimate your monthly mortgage payment, including property tax and insurance.
- Salary CalculatorConvert any pay amount into yearly, monthly, biweekly, weekly, daily and hourly pay.
- Hourly to Salary CalculatorTurn an hourly wage into an estimated annual salary and other pay periods.
- Overtime CalculatorCalculate overtime pay and total earnings using your hourly rate and overtime multiplier.
Pay & Income
- Salary CalculatorConvert any pay amount into yearly, monthly, biweekly, weekly, daily and hourly pay.
- Hourly to Salary CalculatorTurn an hourly wage into an estimated annual salary and other pay periods.
- Overtime CalculatorCalculate overtime pay and total earnings using your hourly rate and overtime multiplier.
Loans & Savings
- Mortgage CalculatorEstimate your monthly mortgage payment, including property tax and insurance.
- Compound Interest CalculatorSee how savings grow with compound interest and regular monthly contributions.
- Car Loan CalculatorEstimate your monthly car payment and total interest for an auto loan.
Everyday Math
Dates & Time
- Age CalculatorCalculate exact age in years, months and days, plus total days and weeks lived.
- Hours CalculatorCalculate hours worked between a start and end time, minus breaks.
- Date CalculatorAdd or subtract days from a date, or find the number of days between two dates.
Guides
Guides are coming soon. For now, every calculator page explains its formula and shows a worked example. Visit the guides page.