Online calculators for various purposes
11 free tools · no sign-up
Enter your date of birth to calculate your exact age in years, months and days.
Calculate the difference between two dates, add or subtract days, or count business days.
Calculate loan payments, interest, compound growth, ROI and savings in one place.
Enter loan amount, interest rate and term to calculate your monthly payment and total interest.
Calculate simple interest: enter principal, annual rate and time in years.
Calculate the future value of your investment with compound interest.
Enter your investment cost and return amount to calculate ROI percentage.
Estimate your full monthly mortgage payment — principal, interest, taxes, insurance and PMI.
Enter your monthly budget to estimate the maximum home price you can afford.
Compare your current mortgage to a new rate and see your monthly savings and break-even point.
See how inflation changes the buying power of the US dollar between any two years.