Free Calorie Deficit Calculator — Daily Target for Weight Loss
A calorie deficit calculator is a free browser tool that estimates your maintenance calories, daily target, projected weekly loss, and timeline to goal weight. Enter your stats and goals to see real-time deficit guidance with no account and no data sent to any server.
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A calorie deficit calculator is a free browser tool that estimates how many calories you should eat per day to lose weight at a chosen pace. It calculates your maintenance calories (TDEE), daily calorie target, expected weekly and monthly loss, and estimated timeline to your goal weight. All calculations run locally in your browser with no account and no data sent to any server.
How it works
- Enter your stats including age, gender, weight, height, and activity level in metric or imperial units.
- Set your goal with weekly loss or target date and review your daily calorie target instantly.
- Track and adjust using projection chart, milestones, reverse mode, and progress check-ins saved locally.
When to use this tool
- Estimating a realistic daily calorie target before starting a weight-loss phase.
- Comparing conservative, moderate, and aggressive deficit scenarios before choosing a pace.
- Projecting how long it may take to reach a target weight based on your current profile.
- Adjusting your plan when progress stalls and your expected timeline changes.
- Combining this plan with the BMI Calculator and broader planning from the Compound Interest Calculator approach to consistency and long-term tracking.
A calorie deficit is the energy gap between your maintenance needs and your daily intake. A 500 kcal/day deficit is a common benchmark because it often balances measurable progress with sustainability. Deficit can come from nutrition, activity, or both; combining the two usually improves adherence and performance. Plateaus can happen due to adaptation, reduced non-exercise movement, and normal weight fluctuations, so periodic recalibration is expected.
Frequently asked questions
What is a calorie deficit?
A calorie deficit means you consume fewer calories than your body uses for maintenance. This energy gap leads to weight loss over time when sustained consistently.
How many calories should I eat to lose weight?
Your calorie target depends on maintenance calories, activity profile, and target pace. A practical starting range is often a 400 to 600 kcal daily deficit, then adjusted from real progress.
Is a 500 calorie deficit safe?
For many adults, a 500 kcal daily deficit is considered moderate and sustainable. Individual tolerance varies, so adjust intake and training based on recovery, hunger, and adherence.
How much weight will I lose on a 500 calorie deficit?
A 500 kcal daily deficit is roughly equivalent to around 0.45 to 0.5 kg per week on average. Short-term fluctuations are normal due to hydration and glycogen changes.
What is the minimum calories I should eat per day?
Common practical lower boundaries are 1200 kcal/day for women and 1500 kcal/day for men without clinical supervision. Going lower can increase risk of muscle loss and nutritional gaps.
How long does it take to lose 10kg?
At approximately 0.5 kg per week, losing 10 kg often takes around 20 weeks. The exact timeline changes with your actual deficit, activity, and consistency over time.
Does exercise increase my calorie deficit?
Yes. Exercise calories burned increase your effective deficit when food intake is unchanged. Combining nutrition and training can improve body-composition outcomes and adherence.
What is TDEE?
TDEE stands for Total Daily Energy Expenditure. It is your estimated maintenance intake based on resting metabolism plus activity.
What happens if my calorie deficit is too large?
Very large deficits can increase fatigue, hunger, training performance drop, and muscle loss risk. Most people do better long-term with a moderate and sustainable deficit.
This calculator provides estimates based on established formulas and is intended for educational purposes only. Individual results vary based on metabolism, body composition, and adherence. Consult a registered dietitian or healthcare professional before starting any weight loss program.
Related tools
- BMI Calculator
A BMI calculator is a free browser tool that estimates your body mass index using metric or imperial units.
- Macro Calculator
A macro calculator is a free browser tool that estimates daily calories and macro targets based on your body, activity level, and goal.