Finance Calculators

Project long-term investment growth with compound interest and regular contributions. Choose your compounding frequency and contribution timing.

Calculate sale price and savings for any discount percentage. Includes common presets (10%, 20%, 30%, 50%, 75% off).

Calculate monthly loan payments and total interest for any amount, rate, and term. See how much you save by adding extra payments.

Calculate your monthly mortgage payment, total interest, and a year-by-year amortization schedule. All math runs in your browser.

Add tax to a net price OR reverse-calculate the pre-tax price from a gross total. Works for US sales tax, UK VAT, Singapore GST, and any custom rate.