Calculators

See exactly how much interest and how many months you'll save by overpaying — with a chart comparing your original and overpaid payoff schedules.

Get the exact difference between two dates, or add/subtract days from a date, with correct handling of leap years, month lengths, and DST.

Switch between four common percentage calculations and get an instant, shareable answer.

Enter a loan amount, rate, and term to see your exact monthly payment and total interest instantly.

Enter your weight and height in either metric or imperial units to get your BMI and weight category instantly.

Enter a start and end date to get the exact number of days between them, broken down into weeks, months, years, and business days.

Enter a starting date and a number of days to add or subtract, and get the exact resulting calendar date.

Get the exact number of weekdays (Monday-Friday) between two dates, alongside the full calendar-day breakdown.

Enter a number of days and instantly see the exact resulting date, starting from today by default.

Enter an extra monthly payment amount and see exactly how much interest and time it saves versus your standard schedule.

See your exact payoff date and total remaining interest, and how much sooner you could be debt-free with extra payments.

Compare a biweekly half-payment schedule against your standard monthly payments — see the interest and time saved from making 26 half-payments a year instead of 12 full ones.