How Many Calories Should I Eat to Lose 1kg a Week?

Digital food scale on dark background for calculating calories for weight loss

How Many Calories Should I Eat to Lose 1kg a Week?

If you are trying to lose weight, you have probably asked yourself: "How many calories should I eat to lose 1kg a week?" Weight loss is not magic; it is simply math and consistency.

To burn fat safely and effectively, you need to understand your body's energy needs. In this guide, we will break down the exact calorie deficit required to lose 1kg a week, and show you how to easily track it.

The Science Behind Weight Loss (The 7,700 Calories Rule)

Before you plan your healthy weight loss meal plan, you must know this golden rule: 1 kilogram of body fat equals approximately 7,700 calories.

To lose 1kg of fat in a single week (7 days), you need to create a total weekly calorie deficit of 7,700 calories. Let's do the math:

  • 7,700 calories ÷ 7 days = 1,100 calorie deficit per day.

This means you must burn 1,100 calories more than you eat every single day. But how do you calculate your starting point? Follow the steps below.

Step 1: Calculate Your Basal Metabolic Rate (BMR)

Your BMR is the number of calories your body burns while resting. It is the energy needed to keep your heart and organs working. You cannot calculate a safe calorie deficit without knowing this number first.

Do not guess your numbers. Use our fast and accurate tool to find your exact resting energy.

Find Your BMR Here

Step 2: Find Your Total Daily Energy Expenditure (TDEE)

Once you have your BMR, you must factor in your daily physical activity (like walking, working, and gym workouts). This gives you your TDEE, which is the total amount of calories you actually burn in 24 hours.

If you want to find your exact daily intake limits for bulking, cutting, or maintaining weight effortlessly, our analyzer tool will do the math for you.

Use Intakes Calculator

Step 3: Create Your Daily Calorie Deficit

Let’s look at an example. If your TDEE is 2,600 calories, and you want to lose 1kg a week, you need a daily deficit of 1,100 calories.

Target Daily Diet = 2,600 - 1,100 = 1,500 Calories to eat per day.

Calorie Deficit vs. Weight Loss Timeline

Daily Calorie Deficit Total Weekly Deficit Estimated Weight Loss (Per Week)
500 Calories 3,500 Calories ~ 0.45 kg (Healthy & Sustainable)
800 Calories 5,600 Calories ~ 0.75 kg (Moderate)
1,100 Calories 7,700 Calories ~ 1.00 kg (Aggressive & Fast)
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How to Burn Extra Calories Safely?

Eating 1,100 calories less through food alone can make you feel hungry and weak. A much better approach is to combine a smaller diet deficit with daily exercise.

For example: Eat 600 calories less, and burn the remaining 500 calories through cardio or weightlifting! Want to know exactly how many minutes of running or cycling you need to burn 500 extra calories?

Kcals Burning Calculator

Track Everything Like a Pro

Calculating your daily calorie limit is only the first step. The real secret to successful weight loss is tracking every meal. You need to log your protein, carbs, and fats accurately.

Stop using complicated, paid apps. Use our 100% free Calorie and Macros Tracker. You can add custom foods, track your daily intakes, and monitor burned calories all in one place.

Open CAL-TRACK Now
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Final Thoughts on Fast Weight Loss

Losing 1kg a week is considered an aggressive weight loss goal. It requires strict discipline, a high-protein diet to save muscle, and regular workouts. Always listen to your body.

If you feel too tired or weak, simply reduce your daily deficit to 500 calories and aim for 0.5kg weight loss per week instead. It is much more sustainable for long-term fitness!

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