Use this as a planning estimate
These calculator results are designed to give you a practical starting point. They work best when you adjust from real progress rather than treating one number as exact.
Beginner-friendly tools
Calorie Deficit Calculator
Use this calculator to estimate a daily calorie target for fat loss based on your maintenance calories.
Enter your details
Your results will appear here
Enter your maintenance calories, choose a deficit level, and click Calculate calorie target to see your estimate.
What your result means
A calorie deficit means eating fewer calories than your body uses. This page turns your maintenance estimate into a simple fat-loss target.
Your result is a starting point, not a promise. Real progress varies depending on activity, consistency, sleep, stress, and how accurate your maintenance estimate is.
Why bigger is not always better
A larger deficit can feel harder to maintain and may not suit everyone.
A moderate starting point is often easier to follow consistently than an aggressive cut.
Worked example
Example inputs
- Maintenance calories: 2,300 calories/day
- Selected deficit: 500 calories/day
Example outputs
- Target calories: 1,800 calories/day
- Weekly energy gap: 3,500 calories/week
This example shows how the calculator turns an estimated maintenance intake into a simple fat-loss calorie target.
Common mistakes
- Using a maintenance number that is too low to begin with.
- Choosing the most aggressive deficit immediately.
- Expecting perfectly linear weekly fat loss.
Related tools and guides
Turn this into macro targetsTDEE Calculator
Estimate your maintenance calories before setting a deficit.
Macro Calculator
Turn your calorie target into protein, carbs, and fat targets.
Goal Weight Timeline Calculator
Estimate how long your goal may take using a realistic pace.
What Is a Calorie Deficit?
Read a plain-English guide to how a calorie deficit works.
Free starter path
Want a simpler beginner route?
Open the Free Fat-Loss Starter Pack for a step-by-step path through calories, macros, protein, hydration, and realistic goal planning.
Disclaimer
This calculator gives a general estimate for educational use and is not medical advice.