Frequently Asked Questions
Is my data private?
Yes. All calculations happen entirely in your browser. We never see, store, or transmit your financial details. Saved inputs use your browser's localStorage only.
Is this professional financial advice?
No. This calculator provides estimates for guidance only. Tipping customs vary by region and establishment. Always use your own judgement.
How accurate is the calculator?
The calculator uses standard percentage arithmetic and is mathematically precise. However, real-world totals may differ due to rounding, tax variations, or establishment-specific policies.
When was this calculator last updated?
The calculator and all guides were last updated in June 2025. We review tipping customs and legislation regularly.
Can I export my results?
Yes. After calculating, click the 'Export as PDF' button to download a print-friendly PDF of your inputs and results.
How do I report an error?
Use our contact page to report any bugs or inaccuracies. Select 'Report a bug or error' from the subject dropdown.
Does the calculator work offline?
Once the page has loaded, the calculator works without an internet connection. However, PDF export and saving to localStorage require a modern browser.
What is a reverse tip calculation?
Reverse tip mode lets you enter the total you paid (including tip) and works backwards to find the original bill amount and tip. Useful for expense reports and receipt verification.
Why does tipping vary so much by country?
Tipping customs are shaped by wage structures, cultural norms, and legislation. In the US, servers earn a low base wage and rely on tips. In many European and Asian countries, service is included in the price.
Can I split the bill unevenly?
The bill splitter divides the total evenly. For uneven splits, use the standard mode to calculate each person's individual tip on their portion of the bill.