Finance & Calculator Tools

Free Polish VAT (kalkulator VAT) calculator. Convert net to gross and gross to net using Polish VAT rates: 23%, 8%, 5% and 0%. Instant results rounded to grosze.

Validate a Polish NIP (tax identification number) online. Checksum verification, automatic XXX-XXX-XX-XX formatting and one-click copy. Free, runs in your browser.

Validate a Polish PESEL number and decode the embedded data: birth date and gender. Checksum and date validation, entirely in your browser.

Calculate VAT, sales tax, IVA, MwSt or TVA instantly. Convert net to gross and gross to net with country-specific tax rates.

Calculate tips and split bills easily. Choose a tip percentage, enter your bill amount, split between people, and see per-person totals instantly.

Calculate the final price after discount. Enter original price and discount percentage to see how much you save.

Calculate monthly loan payments, total interest, and amortization schedule. Works for personal loans, car loans, and mortgages.

Calculate how much to save monthly to reach your financial goal. Set a target amount, timeline, and optional interest rate to see your plan.

Convert currencies in real time with live exchange rates. Supports 30+ world currencies. Powered by the free Frankfurter API - no signup required.

Calculate profit margin, markup, cost, and revenue instantly. Enter any two values to get the rest. Essential for pricing and business planning.