Choose a Calculator
Updated for 2026
Salary / Take-Home Pay
Calculate net take-home pay after federal tax, Social Security, Medicare, and state tax.
Sales Tax Calculator
Add or remove sales tax from any amount. Supports custom rates by state.
Loan Calculator
Find your monthly payment, total interest, and full cost for any loan.
Mortgage Calculator
Calculate monthly payment, LTV ratio, and total loan cost for any US home loan.
Percent Calculator
X% of Y, what percent, percentage change — three calculation modes.
Time Calculator
Convert between minutes, hours, and days. Calculate the difference between two dates.
Currency Converter
Convert between world currencies with live ECB exchange rates. Includes fee and margin calculations.