How many calories to lose weight?
Learn how calorie deficits translate into practical weekly weight-loss targets.
By CalorieCalc.fit Editorial Team
Reviewed by Nutrition content reviewer
Published 2026-06-28
Updated 2026-07-02
Weight loss generally requires eating fewer calories than your TDEE. A moderate 500 kcal daily deficit is a common starting estimate.
Very aggressive targets can be hard to sustain and may push calories too low. Use the safety warning as a signal to slow the timeline.
Weekly weight change is an estimate. Water, sodium, stress, and training changes can affect short-term scale movement.
FAQ
How fast should I lose weight?
Many people aim for a gradual rate rather than extreme weekly changes.
What if my goal date is too soon?
Choose a longer timeline or a smaller deficit.
Sources
- Mifflin-St Jeor resting metabolic rate equation - https://pubmed.ncbi.nlm.nih.gov/2305711/ (PubMed)
- Dietary Guidelines for Americans - https://www.dietaryguidelines.gov/ (U.S. Department of Agriculture and U.S. Department of Health and Human Services)
- Choosing a safe and successful weight-loss program - https://www.niddk.nih.gov/health-information/weight-management/choosing-a-safe-successful-weight-loss-program (National Institute of Diabetes and Digestive and Kidney Diseases)
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