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.

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 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.

이 프롬프트를 사용해 보세요

아래 프롬프트를 복사하여 FloopFloop에 붙여넣고 시작하세요.

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.

자주 묻는 질문

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.

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