Fat Loss Science

Calorie Deficit Calculator

Discover your Total Daily Energy Expenditure (TDEE) and calculate the exact caloric intake needed to reach your target weight safely.

ft
in

Maintenance Calories (TDEE)

2093

Daily Calories to stay the same

Mild Weight Loss

0.5 lb / 0.25 kg per week

1843

kcal / day

Moderate Weight LossRecommended

1.0 lb / 0.5 kg per week

1593

kcal / day

Intense Weight Loss

2.0 lb / 1.0 kg per week

1500

kcal / day

?What is TDEE and BMR?

Your BMR (Basal Metabolic Rate) is the number of calories your body burns at rest just to keep your organs functioning.

TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day when activity is taken into account. To lose weight, you must consume fewer calories than your TDEE—this creates a Calorie Deficit.

Weight Loss Strategies

The 500 Calorie Rule

A daily deficit of 500 calories typically results in 1lb (0.45kg) of fat loss per week.

Protein is Key

High protein intake helps preserve muscle mass while in a calorie deficit.

NEAT Matters

Non-Exercise Activity Thermogenesis (walking, fidgeting) often burns more than structured gym sessions.

Consistency > Intensity

A small deficit you can maintain for months is better than a huge deficit you quit in a week.

Health & Safety Warning

This tool provides mathematical estimates based on standard formulas. We apply a safety floor of 1200kcal (women) and 1500kcal (men). Eating below these levels without medical supervision can lead to nutrient deficiencies and metabolic issues. Always consult a healthcare professional before starting a new diet or exercise program.