Calculateur BMI — Outil en ligne gratuit
Indice de Masse Corporelle — métrique et impérial
Calcule ton Indice de Masse Corporelle (BMI) en système métrique ou impérial. Calculateur BMI gratuit avec tableau de référence santé.
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Free BMI calculator — metric & imperial, instant result
Outilolis BMI Calculateur computes Body Mass Index using the WHO standard formula. Enter height and weight in either metric (cm / kg) or imperial (ft·in / lb) — conversions happen automatically. Your BMI, category, and healthy weight range appear live.
BMI formula
- Metric: BMI = weight(kg) ÷ height(m)²
- Imperial: BMI = (weight(lb) ÷ height(in)²) × 703
BMI categories (WHO, adult)
- Underweight: < 18.5
- Nonrmal: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obese Class I: 30 – 34.9
- Obese Class II: 35 – 39.9
- Obese Class III: ≥ 40
How to use this tool
- 1
Pick your unit system
Toggle between Metric (cm/kg) and Imperial (ft/in/lb). Numbers update automatically when you switch.
- 2
Enter height and weight
Type your height and weight. The BMI is computed live — no need to click a button.
- 3
Read the result
Your BMI appears with a category label (Underweight, Nonrmal, Overweight, Obese). The gauge shows where you sit on the standard WHO scale.
BMI limitations
- Muscle mass — High-muscle individuals often exceed "Nonrmal" despite low body fat
- Age — Older adults lose muscle and bone; same BMI can mean different compositions
- Body shape — BMI doesn\'t show fat distribution (belly fat is higher risk than hip fat)
- Ethnicity — Asian populations face health risks at lower BMI thresholds
- Pregnancy — BMI is not valid during pregnancy
For a more complete picture, pair BMI with waist circumference, body fat percentage, and resting heart rate / fitness level. For health decisions, always consult a qualified healthcare professional.
Frequently Asked Questions
What is BMI?
BMI = weight(kg) / height(m)². It's a rough screening tool for weight status at the population level.What are the BMI categories?
Is BMI accurate for athletes?
Is BMI valid for children?
Does BMI differ by ethnicity?
Should I change my weight based on BMI?
What is ideal weight for my height?
À retenir
- BMI Calculateur is a free, browser-based calculator tool — body mass index — metric and imperial.
- Non signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use BMI Calculateur
- Open the tool: Launch BMI Calculateur on Outilolis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
BMI Calculateur — Quick Facts
- Prix
- Gratuit — sans limites, sans filigrane, sans paywall
- Confidentialité
- 100% dans le navigateur — aucune donnée n’est envoyée à un serveur
- Plateforme
- Tout navigateur moderne — desktop, tablette ou mobile
- Catégorie
- Calculateur Outils on Outilolis
- Hors ligne
- Works offline after first visit (Progressive Web App)
| Caractéristique | Détails |
|---|---|
| Outil | BMI Calculateur |
| Catégorie | Calculateur |
| Inscription requise | Non |
| Téléversement de fichier | Aucun — traité dans le navigateur |
| Compatible mobile | Entièrement adaptatif |
| Coût | Gratuit pour toujours |
Why Use BMI Calculateur?
You should try BMI Calculateur for a quick, private way to body mass index — metric and imperial. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.