Weight Loss Percentage Calculator

Start: 200 lbs, Current: 180 lbs

Result: 10% loss

Start: 150 kg, Current: 147 kg

Result: 2% loss

Start: 250 lbs, Current: 225 lbs

Result: 10% loss

Start: 90 kg, Current: 81 kg

Result: 10% loss

Start: 300 lbs, Current: 285 lbs

Result: 5% loss

Start: 180 lbs, Current: 171 lbs

Result: 5% loss

Start: 220 lbs, Current: 198 lbs

Result: 10% loss

Start: 85 kg, Current: 76.5 kg

Result: 10% loss

Start: 160 lbs, Current: 152 lbs

Result: 5% loss

Start: 240 lbs, Current: 216 lbs

Result: 10% loss

Start: 100 kg, Current: 92 kg

Result: 8% loss

Start: 190 lbs, Current: 178.6 lbs

Result: 6% loss

Start: 140 lbs, Current: 133 lbs

Result: 5% loss

Start: 210 lbs, Current: 189 lbs

Result: 10% loss

Start: 75 kg, Current: 71.25 kg

Result: 5% loss

What is a healthy weight loss percentage?

Experts recommend losing 5-10% of body weight to see significant health improvements like lower blood pressure and cholesterol.

How fast should I lose weight?

A safe rate is generally 1-2 lbs per week, or about 1% of your body weight per week.

Does the unit (lbs vs kg) matter?

No. As long as you use the same unit for both Start and Current, the percentage calculation works exactly the same.

How do I calculate % body fat?

This calculator is for scale weight only. To measure body composition, use our [Body Fat Percentage Calculator](/calculators/body-fat-percentage-calculator).

Key facts

Weight loss percentage is a more accurate measure of progress than absolute weight loss as it accounts for initial body mass. A 5-10% weight loss is clinically significant and associated with improved cardiovascular health and reduced diabetes risk. The calculation requires a consistent weighing environment (time of day, hydration levels) for accurate longitudinal tracking. Healthy weight loss rates typically fall between 0.5% to 1% of total body weight per week.