Tip Calculator

How to Use the Tip Calculator

1. Enter the bill amount - type the subtotal before sales tax. In most US states, tipping is computed on the pre-tax figure; this tool's result matches that convention. If you want to tip on the post-tax amount, enter that total instead.
2. Choose a tip percentage - tap one of the quick buttons (10%, 15%, 18%, 20%, 25%) or enter a custom percentage for non-standard cases (e.g. buffets at 10%, bartenders at 20%, delivery drivers at 15%).
3. Set the number of people - use the +/- buttons to divide the total evenly. The per-person amount includes each person's share of both the bill and the tip.
4. Read the results - three figures appear: the tip amount, the total with tip, and the per-person share. Hand the server the total figure; everyone hands over their per-person share.

Using the Tip Splitter

This tool is also a tip splitter: once you set the bill amount, percentage, and number of people, the per-person figure already covers each diner's share of both the bill and the tip. To use it strictly as a tip splitter for a group, ignore the total-tip output and read the per-person amount — that is exactly what each person hands over. For uneven splits where one person ate more, run the calculator first to get the tip in dollars, then divide that tip in proportion to each subtotal rather than equally. The page-level math respects either workflow, and no bill or party-size data leaves your browser.

How the Calculation Works Under the Hood

The math is intentionally simple: tip = bill × (percent / 100), total = bill + tip, per_person = total / people. Rounding is applied at the display layer using toFixed(2) to produce two decimals, and formatting goes through Intl.NumberFormat with the page's locale currency. Because toFixed rounds half-to-even in some engines (banker's rounding) and half-away-from-zero in others, you may occasionally see a one-cent discrepancy between this tool and a calculator that uses different rounding. For restaurant math that does not matter.

The component is a small Preact island that recomputes on every keystroke and button press. No submission happens, no analytics event carries your bill figure, and no external service is called - the amount you entered exists only in React-style state on your device. If you prefer, you can use this tool in airplane mode after the initial page load; it continues to function because all logic is client-side JavaScript.

When a Tip Calculator Actually Helps

• Large group dinners where mental math gets slow and one person is collecting cash or Venmo from everyone.
• Business dinners where you need a clean per-person figure for an expense report.
• Travel to countries or cities with different customary rates - a 10% tip in Europe, 20% in the US, or 0% in Japan where tipping can be considered rude.
• Delivery orders where the app's default tip is often a flat dollar amount that works out to less than 10% on a large order.
• Splitting uneven portions - though this calculator assumes equal splits, you can compute the tip once and divide it proportionally by subtotal afterwards.
• Teaching percentage math to kids using a real-world receipt.

Edge Cases and Common Questions

Tipping on tax is a minor overpayment (you tip on roughly 8% more than the service cost in a sales-tax state) but widely practiced because the total on the bill is what everyone sees. Automatic gratuity - a mandatory service charge of 18-22% often added for groups of 6 or more - is not a tip; it replaces one, and adding on top of it is optional. Some US restaurants have moved to a no-tipping "hospitality included" model where menu prices are raised 20-25% and servers are paid a higher flat wage; in those rooms, tipping is unnecessary and sometimes discouraged. Delivery platforms sometimes separate "tip" from "service fee"; the service fee goes to the app company, not the driver. Finally, in countries with a value-added tax (VAT) shown on the receipt, the pre-VAT subtotal is the fair tipping base - the VAT rate is often 19-25%, materially larger than US sales tax.

A Short Tour of Global Tipping Norms

Tipping customs vary widely. In the United States and Canada, 15-20% at sit-down restaurants is expected because tipped workers can legally be paid a subminimum wage (tipped minimum is $2.13/hour federally under the FLSA, with the tip making up the difference). In the UK, Australia, and New Zealand, 10% is appreciated but not expected, and many restaurants add a discretionary 12.5% service charge automatically. Most of continental Europe builds service into the menu price, with rounding up or leaving small change (5-10%) as a friendly gesture. Japan, South Korea, and mainland China traditionally do not tip at all - leaving money can be refused or seen as patronizing. The Middle East often uses a 10% service charge plus another small tip. Check the country's norms before traveling; this tool is format-agnostic and works equally well for any percentage you choose.

Comparing This to Uber Eats, Doordash, or Your Phone Calculator

Food-delivery apps default to a percentage-of-subtotal tip presented as buttons, which is convenient but often rounds weirdly (10%, 15%, 20%, or a flat amount) and occasionally shows the tip before or after fees. Their advantage is they handle payment for you; their downside is they sometimes obscure the driver's actual take-home by mixing tips with service fees. Your phone's built-in calculator can compute a tip - multiply bill by 1.20 for 20% - but does not split cleanly. Apple's Calculator, iOS Spotlight's inline math, and Google's search bar all work for one-off computation. This tool's niche is the combined workflow: tip percent selection, rounding, and party-size division in one screen, with no signup and no order history stored anywhere. For actual restaurant billing it is purely informational - the definitive total is what appears on the check.