Build your Tip Calculator with AI in under 5 minutes

Build a browser-side tip calculator with preset percentages (15 / 18 / 20 / 22 / 25 + custom), people-stepper bill split, tax-aware mode, round-up toggle, and multi-currency support — wrapped in a vintage diner-receipt visual identity no other tip tool ships.

작동 방식

단계 1

아이디어를 설명하세요

원하는 것을 일반 텍스트 프롬프트로 작성하세요.

단계 2

AI가 빌드합니다

FloopFloop이 즉시 프로덕션 수준의 코드를 생성합니다.

단계 3

배포 및 라이브 공개

프로젝트가 몇 분 안에 자체 서브도메인에 호스팅됩니다.

개발자 고용 대신 AI로 빌드해야 하는 이유는?

FloopFloop기존 개발자
출시 소요 시간5분 이내2~8주
비용$0부터$5,000 - $50,000+
유지 관리포함지속적인 유지보수 계약

What is a tip calculator?

Tip calculators are one of the most-searched mass-market utility categories on the web — millions of monthly queries for 'tip calculator' alone, with a long tail for 'how much to tip' / 'tip 20' / 'split the bill calculator' across every English-speaking market and even higher absolute volume in adjacent intent ('gratuity calculator', 'restaurant tip', 'uber tip', 'hairdresser tip'). The category is dominated by a handful of ad-supported hosted sites (tipcalc.com, tipfree.app, tippy, the-tip-calculator.com) that all run the same `bill * percent / 100` math under the hood, plus the iOS / Android built-in Calculator app (locked to a single device, no split-the-bill feature). None of them ship a memorable visual identity beyond the genre's default 'two big numeric fields stacked vertically on white'; all of them surround the calculator with banner / interstitial ads heavier than the page itself. The actual logic is small — three multiplications, one division, integer-cents math to avoid the 0.1 + 0.2 = 0.30000…04 floating-point trap. Owning the page yourself means no ads, no signup, no data collection, and a visual signature (vintage diner check + dashed separators + cherry-red booth accent) that nobody else has shipped.

Common features

  • Big monospace bill input + currency picker (USD / EUR / GBP / JPY / CAD / AUD with correct decimal places per currency)
  • Five preset tip chips (15% / 18% / 20% / 22% / 25%) with service-quality hint labels (Standard / Good / Great / Generous / Excellent)
  • Custom-percent input for non-standard amounts (0-100% with 0.5% step)
  • People stepper (1-99) with minus/plus buttons + direct numeric input
  • Live receipt panel: subtotal, tip with effective-percent indicator, total, per-person
  • Tip-on-pre-tax-subtotal toggle (American restaurant convention)
  • Round-up toggle (folds the bump into the tip; subtotal stays honest)
  • Integer-cents math throughout — no floating-point drift on common amounts
  • Intl.NumberFormat for locale-aware thousands separators (1,234.56 in en-US, 1.234,56 in de-DE)
  • Browser-only — no fetch, no third-party script, no data collection

Real-world examples

Quick post-meal calc at a four-top

Family of four finishes dinner, bill comes to $87.20 + $7.75 tax. Operator pulls up the calculator on their phone, types 87.20, taps the 20% preset, types 4 in the people field. Receipt shows: subtotal $87.20, tip $17.44, total $104.64, per-person $26.16. Five seconds end-to-end. The hosted alternatives need 15+ because of cookie banners + ad reflow.

Cash-out where exact change matters

Diner with $40 cash wants to know what total fits. Enters bill ($31.80), pushes the round-up toggle, taps the 20% preset. Receipt shows: tip $8.20, total $40.00, effective tip 25.8% — a touch over the 20% intent but cash-payable in two bills with no change. They hand over exactly $40 and walk out.

Stag-do split where the bill includes VAT

Eight people in London, restaurant check shows £218.40 with VAT already baked in (£36.40 of it). Operator enters 218.40, GBP, toggles "tip on pre-tax subtotal," types 36.40 in the Tax field, picks 15% (UK service-charge convention), sets people to 8. Receipt: subtotal £182.00, tax £36.40, tip £27.30, total £245.70, per-person £30.71. The split lands clean enough that everyone Venmos the round number and one person eats the 71p.

Why FloopFloop fits tip calculator projects

The reason tipcalc.com and friends exist is that wrapping `bill * percent / 100` in a webpage is a viable business model — ads and minimal effort, nothing else. The unique thing FloopFloop ships on top of that is the *aesthetic*: a vintage diner check — cream menu paper canvas, dashed separators between every line item (Subtotal → Tax → Tip → Total like a real receipt), monospace right-aligned amounts that read as a real check, JetBrains Mono on every number, a cherry-red booth accent that lights up the active preset chip the way the diner's vinyl seats do under fluorescent light. Five colour variants (cherry diner red, midnight booth, brass cafe, pastel donut, thermal receipt) cover the obvious aesthetic skin choices without making every tip calculator on the internet look the same. The whole thing is client-side, so the visual IS the differentiator AND the security story: your bill amount never leaves the page, which seems trivial for tip math but actually closes the trust gap that hosted competitors leave open.

이 프롬프트를 사용해 보세요

아래 프롬프트를 복사하여 FloopFloop에 붙여넣고 시작하세요.

Build a tip calculator. Bill amount input (big monospace numeric field) + currency picker (USD / EUR / GBP / JPY / CAD / AUD). Tip-percent row with five preset chips (15% Standard, 18% Good, 20% Great, 22% Generous, 25% Excellent) plus a custom-number chip. People stepper (1-99 with minus/plus buttons + direct numeric input). Live-computed receipt panel: subtotal, tip with effective-percent label, total, per-person amount in the active currency. Two power toggles: "Tip on pre-tax subtotal" (reveals a Tax field; subtracts the tax from the bill before applying the tip percent — American convention when the bill already includes tax) and "Round up to nearest currency unit" (folds the bump into the tip so the subtotal stays honest; useful for handing over cash without making change). All math in integer cents to avoid floating-point drift. Visual: vintage diner check — cream menu paper canvas, dashed separators between line items, monospace right-aligned amounts, cherry-red booth accent on the active preset chip.

Create a gratuity calculator for the service industry. Same bill + tip + split logic, plus a per-service-type preset library (Restaurant 18%, Bar 15%, Hairdresser 20%, Spa 20%, Taxi 15%, Delivery 10%, Uber/Lyft 15%, Hotel housekeeping $2/night). Click a service type and the tip percent + label switches automatically.

Build a bill-splitter for groups. Optimised for parties of 4-8: large per-person amount as the headline number, the breakdown (subtotal, tip, total) underneath in smaller type. Round-up toggle is on by default since groups dividing $73.42 by 5 want whole-dollar shares.

Build a tip calculator with five visual variants: cherry diner red (default; cream paper + red booth accent), midnight booth (near-black with neon-sign red), brass cafe (dark walnut + amber brass accent), pastel donut (mint canvas + raspberry accent), and paper receipt (very pale white + slate ink — the thermal-printer aesthetic). Same receipt-shape + dashed separators + monospace amounts across all five so the cohort reads as one identifiable tool.

자주 묻는 질문

How is this different from tipcalc.com, tipfree.app, or the iOS Tip Calculator?
Hosted tip calculators work — they're built on the same `bill * percent / 100` math this template uses — but they're ad-supported, mostly look the same (one-input one-output one-banner), and the iOS built-in is locked to a single device. The version FloopFloop generates is yours: nothing leaves the browser, no ads, no install, no signup, and the visual (a vintage diner receipt with cream paper + dashed separators + cherry-red booth accent) is a register no other tip tool ships — most of them look like 2010-era utility pages.
Why does it use cents instead of decimals internally?
Floating-point math drifts on common money values: `0.1 + 0.2` evaluates to `0.30000000000000004` in JavaScript, and `12.10 + 0.20` rounds differently than `12.1 + 0.2` if the order changes. Every tip math expression that touches the bill stays in *integer cents* (or the smallest currency unit — 1 yen for JPY) and only converts to a decimal string at display time via `Intl.NumberFormat`. That's the same approach Stripe, PayPal, and every shipping payment library uses — calculating in floats is the recipe for the "penny off" customer-support tickets that adult retailers stopped accepting decades ago.
Does it support tipping on pre-tax vs post-tax amounts?
Yes — the toggle says "Tip on pre-tax subtotal." American restaurant convention is to tip on the pre-tax bill (sales tax is the government's, not the server's), but most printed checks show the post-tax total as the headline number. With the toggle on, an extra Tax field appears; the tip percent applies to `bill - tax` while the total still includes the tax. With the toggle off, the tip applies to the full visible bill (the more generous default — and the right behaviour in countries where the check doesn't break out tax).
What does "round up" do exactly?
Round-up bumps the FINAL total to the next whole currency unit and folds the bump into the tip. Example: $50 bill at 20% = $10 tip, $60 total. With round-up still nets $60 (already even). Same shape on a $42.30 bill at 18% = $7.61 tip, $49.91 total → round-up nets $50, tip becomes $7.70. The effective-percent indicator on the tip line tells you what the actual tip percent ended up at after rounding. Useful for handing over cash without making change, and for keeping the per-person split clean when dividing by N.
Does the per-person split round evenly?
Per-person displays the integer division (`total ÷ people` floored to the smallest currency unit). When the total doesn't divide evenly (`$23.45 ÷ 3 = $7.81 with $0.02 left over`), the last few cents are absorbed somewhere — the math acknowledges this by showing the floored amount as the per-person headline. If you want the split to be exact-to-the-cent, pair the round-up toggle with N people: rounding the total to the next whole unit divides cleanly more often than you'd expect (~half the time for groups of 2-4, more for 5+).
Is my bill amount sent anywhere?
No. The parse, the tip math, the currency formatting all run as plain JS in the browser — there's no fetch to anywhere except `/api/health` (which doesn't see your bill). The page is force-static, so it's a CDN-cached HTML+JS bundle with no per-request server work. The displayed amount only exists in your browser tab.

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