Build your Percentage Calculator with AI in under 5 minutes
Build a percentage calculator that answers the everyday questions in plain language — what is X% of Y, X is what percent of Y, percentage change, and increase or decrease by a percent — all in the browser.
工作原理
步骤 1
描述您的想法
用纯文本提示描述您想要的内容。
步骤 2
AI 为您构建
FloopFloop 即时生成生产就绪的代码。
步骤 3
部署并上线
您的项目在几分钟内托管到专属子域名。
为什么选择 AI 构建而非雇佣开发者？
| FloopFloop | 传统开发者 | |
|---|---|---|
| 上线时间 | 5 分钟以内 | 2 至 8 周 |
| 费用 | 低至 $0 | $5,000 - $50,000+ |
| 维护 | 已包含 | 持续外包费用 |
What is a percentage calculator?
A percentage calculator handles the small bits of maths that come up constantly but are just annoying enough to want a tool for: working out a tip or a discount, checking what percent of a budget you've spent, figuring a grade, or seeing how much a price changed. The four core questions cover almost everything — what is X% of a number, what percent one number is of another, the percentage change between two values, and a number increased or decreased by a percent. It's among the most-searched calculators on the web precisely because the formulas are easy to forget and easy to get backwards. A good one states each question in plain language, fills in the answer as you type, and is careful about the edge cases — dividing by zero, negative changes, values over 100% — instead of quietly showing a wrong or broken result.
Common features
- What is X% of a number
- X is what percent of Y
- Percentage change between two values (up or down)
- Increase and decrease a value by a percent
- Plain-language, fill-in-the-blank layout
- Live results as you type
- Up/down direction shown for changes
- Safe handling of divide-by-zero (shows a dash)
- Copy any result; everything client-side
- Light and dark themes; inputs remembered
Real-world examples
A discount
Someone works out 25% off a $80 item by reading the 'decreased by' result — $60 — without reaching for a separate calculator.
A grade
A student types 'what percent is 46 of 60' and gets 76.6667% instantly.
A price change
A shopper checks the percentage change from $50 to $75 and sees a green ↑ 50% — and from $100 to $80, a red ↓ 20%.
Why FloopFloop fits percentage calculator projects
A percentage calculator is a tiny tool you want instant, ad-free, and yours. FloopFloop ships the calculator you want — the exact modes you use, VAT or sales-tax presets, your own wording — on your own domain, with every calculation running in the browser. The friendly 'sentence' cards that ship by default state each question in plain English with the answer right there, and the whole thing is one prompt away from being whatever fits your workflow.
试试这些提示词
复制以下任意提示词，粘贴到 FloopFloop 即可开始构建。
Build a percentage calculator with plain-language cards. Card 1: 'What is P% of N?' Card 2: 'X is what percent of Y?' Card 3: 'Percentage change from A to B?' with an up/down arrow and colour. Card 4: a value increased and decreased by P%, showing both. Inline number inputs inside the sentences, results that update live, and a copy button on each. Guard against dividing by zero (show a dash). Keep it deterministic so the first render is hydration-safe, and remember every input in localStorage. 100% client-side.
Create a percentage calculator like the popular ones: type two numbers and get the percent. Cover 'what is X% of Y', 'X is what % of Y', and percentage increase/decrease. Keep it in the browser.
Build a friendly percent calculator for everyday maths — discounts, tips, grade percentages, percentage change — with a clean card layout and a dark theme.
Build a tool to work out percentage change between two numbers, showing whether it went up or down and by how much.
常见问题
What can it calculate?
How do I work out a percentage of a number?
What's the difference between percentage change and percentage points?
What happens if I divide by zero?
Is anything sent to a server?
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