Finance Tools

Calculate break-even units from fixed cost, price, and variable cost.

Estimate future value with compound interest and optional monthly deposits.

Validate card numbers with the Luhn checksum.

Calculate sale price and savings from an original price and discount rate.

Validate International Bank Account Numbers with the MOD 97 check.

Estimate monthly loan payments from principal, annual rate, and term.

Calculate gross profit, margin, and markup from cost and selling price.

Calculate tax amount and final price.

Calculate tip, total bill, and per-person split.