Our free Reverse Tip Calculator provides a professional, high-performance solution to find the original bill from a total paid, discover what tip percentage was left, or calculate the exact total needed for a target tip, free, instant, no login directly within your browser. Engineered for maximum speed and absolute privacy, the tool operates entirely on the client side using secure local JavaScript processing—meaning your data never leaves your device and is never uploaded to any external server. Whether you are working on a desktop, tablet, or mobile phone, the responsive and premium interface delivers instant real-time results with zero wait times. Designed for daily productivity, it features fully configurable parameters, robust input verification, and offline capability to ensure a seamless, secure workflow.
Type in the final amount from your credit card statement or receipt.
Select or type the tip percentage you added (e.g. 15%, 18%, or 20%).
The calculator instantly isolates the original subtotal and the exact tip paid.
Your data is processed entirely inside your browser using client-side JavaScript. Nothing ever travels over a network to any server — making BunchTool the most private option available.
Because everything runs locally in your browser, there are no upload queues or server wait times. Results appear in seconds regardless of your internet speed — or even without any connection at all.
Our tool uses precise inverse math to separate your tip from the base bill, resolving mathematical guestimations down to the last cent.