Calculate gratuity, tax splitting, and per-person dining costs with whole dollar rounding.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Type in your meal subtotal or total bill amount before tip.
Choose 15%, 18%, 20%, or enter a custom gratuity percentage.
Enter the number of people sharing the check to view exact per-person costs.
Standard gratuity in US restaurants typically ranges between 15% (fair service) to 20%+ (excellent service), with 18% being a widespread standard.
The round-up toggle adjusts the final tip so that the total bill amount lands on an even whole dollar amount (e.g. $100.00 instead of $99.42).
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