BMI vs Body Fat Percentage: Which Matters More? (UK)
BMI is fast and free; body fat percentage is more accurate. Use both together for the most honest picture of your body composition.
Feature Comparison Table
| Feature | BMI | Body Fat Percentage |
|---|---|---|
| Inputs | Height, weight | Circumferences or scan |
| Distinguishes muscle vs fat? | No | Yes |
| Accuracy | Population-level screen | Individual composition |
| Time to measure | 10 seconds | 2โ3 minutes |
| Best for | Quick check-in | Tracking real composition change |
Comparison Verdict
BMI is a useful five-second screen. For meaningful progress tracking โ especially while training โ body fat percentage wins.