Build your BMI Calculator with AI in under 5 minutes

Build a BMI calculator that works out your Body Mass Index in metric or imperial, shows your WHO category on a colour-coded gauge, and gives your healthy weight range — 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 bmi calculator?

A BMI calculator works out your Body Mass Index — weight divided by height squared — and tells you which of the World Health Organization's weight categories it falls in. It's one of the most-searched health tools because it's a quick, free way to screen whether your weight is in a healthy range for your height, whether you're tracking a goal, prepping for a doctor's visit, or just curious. The number itself is simple; what makes a calculator genuinely useful is showing it in context: which category you're in, where you sit on the scale visually, and what weight range would put you in the 'normal' band. A good one handles both metric and imperial, since people think in whichever they grew up with, and is honest that BMI is a rough screen — it can't tell muscle from fat — rather than a verdict.

Common features

  • Metric and imperial inputs
  • BMI to one decimal place
  • The WHO category (underweight / normal / overweight / obese)
  • A colour-coded gauge with a pointer
  • Your healthy weight range for your height
  • Boundary-accurate WHO cut-offs (18.5 / 25 / 30)
  • Instant, browser-side calculation
  • A clear 'screen, not a diagnosis' note
  • Inputs remembered on the device
  • Light and dark themes

Real-world examples

A quick check

Someone enters 70 kg and 175 cm, sees a BMI of 22.9 land in the green 'Normal' band, and notes the healthy range of about 57–77 kg.

Imperial inputs

A user flips to imperial, enters 154 lb at 5 ft 9 in, and gets the same result without doing any conversion.

Setting a target

Someone above the normal band reads off the healthy weight range for their height as a goal to aim for.

Why FloopFloop fits bmi calculator projects

A BMI calculator is a simple tool you want instant, ad-free, and private. FloopFloop ships the calculator you want — metric or imperial, a body-fat or waist-ratio add-on, your own styling — on your own domain, with every calculation running in the browser so nothing about your body leaves your device. The 'clinic' gauge that ships by default shows exactly where you land at a glance, and the whole thing is one prompt away from being whatever fits your need.

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 BMI calculator with a metric/imperial toggle. Metric takes weight in kg and height in cm; imperial takes weight in pounds and height in feet + inches. Show the BMI to one decimal, the WHO category (underweight / normal / overweight / obese) as a coloured pill, and a colour-coded gauge (blue→green→yellow→red on a 15–40 scale) with a pointer at the result. Also show the healthy weight range for the height. Compute everything in the browser, keep it deterministic so the first render is hydration-safe, and remember the inputs in localStorage. 100% client-side.

Create a BMI calculator like the health-site ones: enter weight and height, get the number and whether it's in the healthy range. Support metric and imperial. Keep it in the browser.

Build a body mass index tool with a visual gauge showing where I fall, and a dark theme.

Build a BMI calculator that also tells me the weight range that would put me in the normal BMI band for my height.

常见问题

How is BMI calculated?
BMI is your weight divided by the square of your height. In metric that's kilograms ÷ (metres)²; in imperial it's 703 × pounds ÷ (inches)². The calculator does both — just flip the unit toggle.
What are the BMI categories?
The World Health Organization bands for adults are: under 18.5 underweight, 18.5–25 normal, 25–30 overweight, and 30 or above obese. The gauge colours and the category pill follow exactly these cut-offs.
What's the healthy weight range it shows?
It's the weight band that would put your BMI between 18.5 and 25 for your current height — handy as a target. It's computed by inverting the BMI formula at those two boundaries.
Is BMI accurate for everyone?
No — it's a quick screen, not a diagnosis. BMI doesn't distinguish muscle from fat or account for age, sex, or build, so very muscular people can read as 'overweight' while perfectly healthy. Use it as a rough guide and talk to a clinician for anything that matters.
Is my data uploaded?
No. Every calculation runs in your browser and your last inputs are saved to localStorage only. The single outbound surface is the /api/health probe.

相关构建类别

探索更多类别

Loan & Mortgage Calculator

Build a loan and mortgage calculator that finds the monthly payment, total interest, and full amortization schedule for any loan — adjust the amount, interest rate, and term with live sliders. Everything runs in the browser.

Percentage Calculator

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.

Unit Converter

Build a unit converter for length, weight, temperature, volume, area, speed, time, and digital storage — instant two-way conversion that runs entirely in the browser, generated from a single prompt.

Date & Age Calculator

Build a date and age calculator that finds the time between two dates, your exact age, or adds and subtracts days, months, and years — with full year/month/day breakdowns. Everything runs in the browser.

Tip Calculator

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.

Aspect Ratio Calculator

Build an aspect ratio calculator that finds the ratio of any width and height, resizes dimensions while keeping the ratio, and previews the shape — with presets like 16:9 and 4:3. Everything runs in the browser.

准备好开始构建了吗？

立即开始构建您的项目——无需编写代码。

Generate this for me

开始构建