TDEE Calculator for Weight Loss | Calorie Deficit Targets and Fat Loss Timeline
Find your exact daily calorie target for fat loss. Enter your stats to get your TDEE, add an optional goal weight to see your projected timeline, then choose a deficit level to set your daily eating target at 250, 500, or 750 kcal below maintenance.
Your Stats
Enter to see your projected date for reaching your goal at each deficit level.
Switches to Katch-McArdle for higher accuracy.
The standard medical recommendation. Produces about 0.5 kg of fat loss per week with adequate protein.
Enter your stats to see your fat loss calorie target.
What Is TDEE for Weight Loss?
TDEE, or Total Daily Energy Expenditure, is the total number of calories you burn per day. For weight loss, TDEE is the starting point, not the eating number. You subtract a calorie deficit from TDEE to find your daily target, and the size of that deficit determines how fast you lose weight.
A 500-calorie daily deficit produces roughly 0.5 kg of fat loss per week. Going larger than 750 calories below TDEE accelerates fat loss short term but also accelerates muscle loss, which lowers TDEE and makes the plateau arrive sooner. The deficit selector on this calculator shows your daily target and a projected goal date for each option.
3,500 kcal deficit equals roughly 1 lb (0.45 kg) of fat. A 500 kcal daily deficit creates a 3,500 kcal weekly deficit. Real results vary by body composition and protein intake, but this model is accurate enough for planning.
After 8 to 12 weeks in a deficit, the body reduces NEAT by 100 to 300 kcal per day as a compensation mechanism. This is the main reason fat loss slows at the 6 to 8 week mark without changes in diet.
Protein at 2 to 2.4 g per kilogram of body weight during a cut preserves lean mass far better than lower intakes. Each pound of muscle preserved keeps TDEE 6 to 10 kcal higher per day.
Every 4 to 6 weeks of fat loss, TDEE drops because you weigh less. Recalculating and adjusting calories is required to maintain the same rate of fat loss over time.
How Does This Weight Loss TDEE Calculator Work?
Three steps convert your stats into a daily eating target with a projected date for reaching your goal weight.
- TDEE
- Deficit
- Track
Calculate Your Maintenance Calories
What Affects the Rate of Fat Loss?
Fat loss rate is determined by more than just the calorie deficit. These six variables explain why results differ between individuals at the same deficit.
Deficit Size
Larger deficits produce faster initial fat loss but trigger stronger metabolic adaptation and more lean mass loss. The optimal deficit for most people is 20 to 25 percent below TDEE, which balances fat loss speed against muscle preservation.
Protein Intake
Protein at 2 to 2.4 g per kilogram of body weight during a cut is the single most effective intervention for preserving lean mass. Each pound of muscle preserved keeps TDEE 6 to 10 kcal higher per day and makes future fat loss easier.
Training Load
Resistance training during a cut preserves muscle mass far more effectively than cardio alone. Cardio contributes additional calorie expenditure but does not signal muscle retention the way lifting does.
Metabolic Adaptation
The body responds to sustained calorie restriction by reducing NEAT by 100 to 300 kcal per day over 8 to 12 weeks. Diet breaks of 1 to 2 weeks at maintenance reset some of this adaptation.
Sleep and Cortisol
Poor sleep raises cortisol and ghrelin, the hunger hormone, and reduces the anabolic hormone response to training. Under 7 hours per night during a cut increases muscle loss relative to fat loss for the same calorie deficit.
Adherence
The best diet is the one you can maintain. A 200-calorie daily deficit sustained for 6 months produces more fat loss than a 600-calorie deficit maintained for 6 weeks before breaking down. Sustainability outweighs aggressiveness in almost every real-world outcome study.
How Do You Set the Right Calorie Target for Fat Loss?
Three approaches depending on how aggressively you want to cut and how much muscle preservation matters.
Slow Cut (250 kcal deficit)
Produces 0.25 kg of fat loss per week. Lowest risk for muscle preservation. Best for lean individuals and athletes. Pair with the Macro Calculator at 2.2 to 2.4 g protein per kilogram.
Standard Cut (500 kcal deficit)
Produces roughly 0.5 kg per week. The standard medical recommendation for most adults. The Calorie Deficit Calculator gives a precise date-based projection for your goal weight.
Aggressive Cut (750 kcal)
For individuals with a significant amount of weight to lose. Not recommended for lean individuals or athletes. Requires strict protein targets and resistance training. The Lean Body Mass Calculator helps you track muscle preservation.
What Are the Best Tips for Using TDEE to Lose Weight?
Six practices that make a calorie deficit work over the long term.
- 1
Eat 2 to 2.4 grams of protein per kilogram of body weight every day
This is the single most important variable for muscle preservation during a cut. It also reduces hunger more than equivalent calories from carbohydrates or fat.
- 2
Keep lifting while cutting
Resistance training provides the signal for muscle retention during energy restriction. Dropping to cardio only during a cut is the fastest way to lose muscle along with fat, which permanently lowers TDEE.
- 3
Take a 1 to 2 week maintenance break every 8 to 12 weeks
This resets leptin, reduces cortisol, and partially reverses metabolic adaptation. People who take structured diet breaks lose similar fat over 6 months but retain more muscle and report better adherence than continuous dieters.
- 4
Weigh yourself daily and track the 7-day average
Daily weight swings of 1 to 4 lbs are normal and uninformative. The 7-day average is the only signal worth paying attention to for tracking fat loss progress.
- 5
Recalculate every 5 lbs of body weight lost
Each 5-lb drop lowers TDEE by roughly 50 to 100 calories. Continuing to eat at the original deficit means the actual deficit shrinks until the scale stops moving.
- 6
Increase daily steps before increasing the calorie deficit
Walking burns calories without triggering hunger or muscle loss. Adding 2,000 to 3,000 steps per day adds 80 to 120 kcal of daily burn without the metabolic adaptation response that a larger calorie restriction would trigger.
Frequently Asked Questions
Quick answers to the questions people ask most.
250 to 500 calories below TDEE per day works for most people. The 500-calorie deficit is the standard starting point, producing roughly 0.5 kg of fat loss per week. Smaller deficits produce slower but more sustainable results with better muscle retention. Deficits larger than 750 calories per day increase muscle loss and trigger stronger metabolic adaptation.
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