Tools

Free calculators

Practical tools for everyday numbers — salary, VAT, margin and more. No sign-up, right in your browser.

Salary calculator

Gross ↔ net with 2026 taxes

Add or extract VAT

Profit, margin and markup

Amazon fees and profit

PayPal fees and net amount

IBAN format & checksum check

Estimate the revenue email marketing could bring.

Practical tools for everyday numbers — salary, VAT, margin and more. No sign-up, right in your browser.