How to use
- Use the input controls to provide the content or file.
- Adjust options if available, then run the tool.
- Review the result and copy or download it.
Calculate a custom tax amount and total from a user-entered rate, either added to a subtotal or extracted from a tax-inclusive amount.
For browser-processed tools, your data stays in this browser. The Public IP Checker is the exception and clearly discloses its provider.