Calorie Deficit Calculator
Use our free Calorie Deficit Calculator to calculate your daily calories for healthy, sustainable weight loss.
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Description
Use our free Calorie Deficit Calculator to calculate your daily calories for healthy, sustainable weight loss. Learn how a calorie deficit works and start tracking your nutrition & transformation platform.
About Calorie Deficit Calculator
What is Calorie Deficit Calculator?
Calorie Deficit Calculator is a free calculator on calorie-deficit.com, a landing page in the GetFIT App brand. It estimates a daily calorie target, macros, and a weight loss timeline, and the page says the results are estimates that should not replace professional medical advice.
What Calorie Deficit Calculator does
The calculator takes gender, height, age, current weight, goal weight, activity level, and a weight loss pace, then shows a daily calorie target, BMR, TDEE, a daily deficit, and a macro breakdown for protein, carbs, and fat. The page says 1 kcal equals 1 calorie. It says the calculator uses the Mifflin-St Jeor equation. The page says about 3,500 kcal equal roughly 1 lb of body fat. It says a daily deficit of around 300 to 500 calories is often enough to support steady fat loss while preserving muscle, and that a bigger deficit is not always better. Protein is targeted at 1.8g per kg of bodyweight. The page says body fat loss only occurs when a calorie deficit is maintained over time. Results are estimates and should not replace professional medical advice.
Who Calorie Deficit Calculator is for
People who want an estimate of a daily calorie target, macros, and a weight loss timeline. GetFIT App, in the same brand, combines meal plans, workouts, recipes, and tracking.
How Calorie Deficit Calculator works
The page says the calculator uses the Mifflin-St Jeor equation. For men, BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age + 5. For women, BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 161. TDEE is BMR multiplied by an activity factor. The factors on the page are 1.2, 1.375, 1.55, 1.725, and 1.9. To lose fat, the page says to eat fewer calories than TDEE. The macro step targets 1.8g of protein per kg of bodyweight. The page says the scale often moves 2 to 4 lbs in days 1 to 7, and that a significant portion can be water weight as glycogen stores change. It says days 8 to 14 are typically 0.5 to 1 kg per week, and that from day 15 the targets adjust as the body changes. These calculations are estimates. The page says to consult a healthcare professional before starting a weight loss program, especially with underlying health conditions.
Key features
- BMR from the Mifflin-St Jeor equation, with formulas for men and for women.
- The activity factors on the page are 1.2, 1.375, 1.55, 1.725, and 1.9.
- The page shows 250 kcal per day as about 0.5 lb per week, 500 as about 1 lb, 750 as about 1.5 lb, and 1000 as about 2 lb.
- A macro breakdown for protein, carbs, and fat, with protein targeted at 1.8g per kg.
- A weight loss timeline for days 1 to 7, days 8 to 14, and day 15.
- GetFIT App tracking, recipe planning, four-week meal plans, workout programs, workout logging, and habit tracking.
- The page says results are estimates and do not replace professional medical or nutritional advice.
Pricing
As listed on calorie-deficit.com, checked 13 October 2026. Prices can change; see the site for current terms.
- The calculator is free to use. GetFIT App lists a free trial, cancel anytime.
Facts from calorie-deficit.com, checked 13 October 2026
- Calorie-deficit.com is a landing page operated within the GetFIT App brand, and the site is owned and maintained by GetFIT App.
- The page says 1 kcal equals 1 calorie.
- Some images on the page are illustrative and may not reflect the exact appearance of the GetFIT App interface.
- The page says a moderate deficit of around 300 to 500 calories is often enough, and that very large deficits increase the likelihood of muscle loss, hunger, and fatigue.
Written from Calorie Deficit Calculator's own website (Homepage). The maker can claim this listing to edit it.
Categories
Frequently asked questions
What is a calorie deficit?
A calorie deficit happens when calorie intake stays below the calories the body burns. The page says the body then uses stored energy, primarily body fat. It also says a deficit does not mean starving, and that food choices, exercise, sleep, stress, hormones, and genetics influence progress.
Can fat loss happen without a calorie deficit?
The page says no. It says body fat loss only occurs when a calorie deficit is maintained over time, including on low carb, keto, intermittent fasting, or a Mediterranean pattern. Those diets can make a deficit easier. They do not replace the deficit.
How large a deficit does the page describe?
The page shows 250 kcal per day as about 0.5 lb per week, 500 as about 1 lb, 750 as about 1.5 lb, and 1000 as about 2 lb. It says a daily deficit of around 300 to 500 calories is often enough to support steady fat loss. A bigger deficit is not always better. Very large deficits can increase the likelihood of muscle loss, hunger, fatigue, and lower training performance.
What does the page say about the first weeks?
The page says the scale often moves 2 to 4 lbs in days 1 to 7, and that a significant portion can be water weight as glycogen stores change. It says days 8 to 14 are typically 0.5 to 1 kg per week. From day 15, it says targets adjust as the body changes. The page says the calculations are estimates.
Is this medical advice?
No. The page says the results are estimates for educational and informational purposes and should not replace professional medical or nutritional advice. It says to consult a qualified healthcare professional before diet or exercise changes when there is a medical condition. It also says GetFIT App and its owners accept no liability for decisions or actions taken from the information.