Weight & Body Fat Tracker with Trend Chart
Log weight (kg) and optional body fat percentage (%) with date; the change since your last entry, averages and a dual-series trend chart are computed automatically. History stays in your browser only.
Your latest weight record will appear here.
Weight management reference
| BMI | Underweight | Normal | Overweight | Obese |
|---|---|---|---|---|
| kg/m² | < 18.5 | 18.5–23.9 | 24–27.9 | ≥ 28 |
| Body fat | Men reference | Women reference |
|---|---|---|
| 成人参考 | 10–20 % | 18–28 % |
For self-reference only — BMI and body fat ranges are informational, not a medical diagnosis. If your weight changes sharply, consult a professional.
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What is it
Weighing yourself at the same time on the same scale, with body fat when available, reveals the real trend far better than occasional weigh-ins. This tool computes the change since last time, averages and a dual-series chart.
Notes & fun facts
Anyone losing weight or training needs a dated log of recent weeks — every half-kilogram becomes visible, and that makes the habit stick.
Origin & history
Weighing yourself at a fixed time on the same scale is a classic, evidence-backed habit in weight management: studies consistently link regular self-weighing with better weight loss and long-term maintenance. From mechanical scales to electronic and smart body-fat scales, the tools kept improving, making this simple habit easier to keep and the trend over time easier to read.
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Feedback
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