Beginner Fat Loss Plan: A Step-by-Step Guide (Week by Week)

Step 1: Calculate Your Starting Numbers

Before changing anything, you need your baseline numbers. Do these in order:

1. Calculate your BMI using our BMI calculator to establish your weight status.
2. Measure your body fat % using our body fat calculator. This is your real starting point — more meaningful than weight alone.
3. Calculate your TDEE using our TDEE calculator. This is your maintenance calorie number.
4. Set your calorie target: Subtract 500 from your TDEE for a 0.5kg/week fat loss rate.
5. Set your protein target: Use our protein calculator. Aim for 1.8–2.0g per kg bodyweight.

Step 2: Set Up Your Diet (Weeks 1–2)

Do not overhaul everything at once. In weeks 1–2, focus only on hitting your calorie target and protein goal. Everything else will follow.

Practical setup: Use a kitchen scale to weigh food for the first 2–4 weeks. Studies consistently show people underestimate calories by 20–50% when estimating by eye. Weigh everything until you develop accurate intuition.

Protein sources: Chicken breast, tuna, eggs, Greek yoghurt, cottage cheese, lean beef. Aim for one protein source at every meal.

Fill remaining calories: Prioritise vegetables (low calorie, high volume, high satiety), moderate carbohydrates for training energy, and healthy fats from olive oil, avocado, nuts.

Step 3: Add Training (Weeks 2–4)

Resistance training 3×/week: Full-body compound movements — squat, deadlift, bench press, row, overhead press. 3 sets of 8–12 reps per exercise. This preserves muscle tissue during your deficit.

Daily walking: Target 8,000–10,000 steps per day. This is NEAT — the non-exercise movement that can add 200–400 kcal of daily burn without the recovery cost of exercise.

Step 4: Track and Adjust (Every 2 Weeks)

Weigh yourself daily but evaluate weekly averages. If the average drops 0.3–0.7kg per week, your plan is working — do not change anything. If it's flat for two consecutive weeks, reduce calories by 100–150 kcal and reassess.

Re-calculate your calorie target every 8 weeks as your weight decreases — your TDEE drops as you get lighter.

Common Beginner Mistakes

• Doing too much too soon and burning out in week 3
• Not eating enough protein and losing muscle alongside fat
• Trusting hunger cues instead of measurements early on
• Changing the plan before giving it enough time to work (minimum 3–4 weeks)
• Choosing a deficit that is too aggressive and triggering muscle loss and fatigue