Body Fat Calculator – Addition.site

Estimate your body‑fat percentage in seconds, share your results on X, and track your progress with a free, web‑based tool.

How the Calculator Works

1. Enter Your Personal Data
2. Age – Numeric field (e.g., 30).
3. Gender – Select male or female.
4. Weight (kg) – Input weight in kilograms (e.g., 70 kg).
5. Waist (cm) – Waist circumference in centimeters.
6. Neck (cm) – Neck circumference in centimeters.

7. Hip (cm) – Only required for females – Hip circumference in centimeters.

8. Hit “calculate”
   The script applies the Navy Body‑Fat Formula (simplified) to compute your body‑fat percentage.

9. View & Copy the Result
   The calculated value appears in the read‑only input box (e.g., 15.3%).

10. Click the box to copy the percentage to your clipboard.

11. A temporary “Copied!” message confirms the action.

12. Share on X
    Click the X‑icon button to open a pre‑filled tweet with your result, making it easy to share progress with friends or a fitness community.

Understanding Body‑Fat Percentage

• What It Is: The proportion of your body mass that comes from fat tissue.
• Why It Matters:
• Indicates overall health, metabolic risk, and fitness level.
• Helps set realistic goals for weight management or athletic performance.
• Healthy Ranges (approximate):
• Men: 10–20 % (athletes 6–13 %)
• Women: 20–30 % (athletes 14–20 %)

Note: These ranges vary by age, ethnicity, and individual health status. Use the calculator as a quick estimate; for medical advice consult a professional.

Use Cases

Tips for Accurate Results

1. Use a Reliable Measuring Tape – Measure waist at the narrowest point, neck just below the larynx, and hips at the widest point for females.
2. Keep Units Consistent – All measurements must be in centimeters and weight in kilograms.
3. Repeat Measurements – Take the same measurements at the same time of day for consistency.
4. Refresh the Page – If the calculator shows “0%”, ensure all fields are filled correctly.

Why Choose This Tool?

• Zero Cost – Completely free to use.
• No Sign‑Up Needed – Immediate access from any device with a browser.
• Open‑Source Formula – Uses the Navy Body‑Fat Formula, a widely accepted method for quick estimates.
• Shareability – Built‑in X sharing button for instant social media updates.
• Accessibility – Simple, clean interface with a copy‑to‑clipboard feature.

Summary

• Body fat calculator
• Calculate body fat percentage
• Body fat estimator
• Navy body fat formula
• Free body fat calculator online
• Share body fat on X
• Fitness calculator

Try it now: Enter your data, calculate, copy, and share your body‑fat percentage—no downloads, no sign‑ups, totally free, and with instant results.