Determine how long it will take to reach your target weight by estimating your daily energy gap.
Total weight to be lost:
10 kg
Estimated days to reach goal:
154 days
Estimated weeks to reach goal:
22 weeks
Note: These are estimates based on standard energy conversion rates (1kg body mass ≈ 7,700 kcal). Actual results may vary based on metabolism and activity level.
Weight loss is based on the energy balance principle where a cumulative energy deficit leads to a reduction in total body mass over time.
Formula: Days = (Target Loss in kg × 7,700) / Daily Deficit
Days = (Target Loss in kg × 7,700) / Daily Deficit
Example: A user weighing 85kg aiming for 80kg with a 500 kcal daily deficit.
Biological factors like metabolic adaptation, water retention, and hormonal shifts mean real-world weight loss is often non-linear and may vary from theoretical calculations.
Extreme deficits can lead to muscle loss and nutrient deficiencies; a moderate deficit is usually more sustainable and healthier long-term.
This is the widely accepted average energy density for human adipose tissue (fat), representing the energy stored in one kilogram of fat mass.
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