everyday-health Verified Precision Tool
Weight Loss Percentage Calculator
Calculate total weight loss percentage, remaining target weight, and weekly progress rate.
Mathematical Formula
Weight Loss % = ((Start Weight - Current Weight) / Start Weight) * 100
Overview & Explanation
Tracking percentage of body weight lost provides a standardized measure of fitness progress independent of initial body scale.
How It Works
- Subtracts current weight from starting weight.
- Divides by starting weight.
- Multiplies by 100 to yield percentage.
Practical Applications
- Fitness challenge tracking.
- Bariatric or lifestyle transformation monitoring.
85 kg starting to 78 kg current
Calculate total percentage weight loss.
1
Calculate weight lost
85 - 78
= 7 kg lost
2
Calculate percentage loss
(7 / 85) * 100
= 8.24% body weight lost
Frequently Asked Questions
What is a safe weekly weight loss rate?
A sustainable, healthy rate of weight loss is generally 0.5 kg to 1.0 kg (1 to 2 lbs) per week.
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