Tools

Browse free finance calculators and developer utilities. Every tool runs in your browser.

Developer tools

Quickly search and replace text with regex support.

Live markdown editor with real-time preview.

Format, validate, and minify JSON data.

Add Turkish VAT to a net amount or extract it from a gross amount. Rates are 1%, 10%, 20%, or a custom rate.

Validate any IBAN with the ISO 13616 mod-97 check. Turkish IBANs show the bank code and bank name. Nothing leaves your browser.

2026 Turkish motor vehicle tax for cars, using the official GIB (I) and (I/A) tariffs.

Monthly payment, total interest, and an amortization schedule from principal, monthly rate, and term. Optional Turkish consumer-loan tax estimate.

A simple tally counter with step control.