You calculated your TDEE. Now you're staring at a number - 2,400 calories - and wondering: what do I actually do with this?
Most people stop here. They close the tab, feel good about "learning their number," and change nothing. That number is useless without the next step.
Here's exactly what to do.
Your TDEE Is Not Your Eating Target
TDEE stands for Total Daily Energy Expenditure - the number of calories your body burns each day. If you eat exactly this amount, your weight stays the same.
That's maintenance. Most people don't want maintenance.
TDEE tells you where you are. Your goal determines where you need to go. The gap between them is your adjustment.
Step 1: Choose Your Goal
Before adjusting anything, decide what you actually want:
Fat Loss
Eat below TDEE. Your body makes up the difference by burning stored fat. See our deficit guide.
Adjustment: -300 to -500 calories
Maintenance
Eat at TDEE. Weight stays stable. Good for breaks between diet phases. See our maintenance guide.
Adjustment: None
Muscle Gain
Eat above TDEE. Extra calories fuel muscle growth (with proper training). Learn about bulking.
Adjustment: +200 to +300 calories
Not sure what weight to aim for? The ideal weight calculator gives you a personal range based on your height before you commit to a calorie adjustment.
Step 2: Set Your Calorie Target
Take your TDEE and apply the adjustment for your goal.
Fat Loss Example
TDEE: 2,400 cal
Adjustment: -400 cal
Target: 2,000 calories/day
Muscle Gain Example
TDEE: 2,400 cal
Adjustment: +250 cal
Target: 2,650 calories/day
If unsure, start with a smaller adjustment (-300 for fat loss, +200 for muscle). You can always adjust later. Starting too aggressive leaves you nowhere to go when progress stalls.
Step 3: Commit to 7 Days
This is where most people fail. They set a target, hit it for 2 days, see no change on the scale, and panic.
Weight fluctuates 2-5 pounds daily from water, food in your system, and sodium intake. These fluctuations are noise, not signal.
Your job for the first week:
- Hit your calorie target (within 50-100 calories)
- Weigh yourself daily, same time, same conditions
- Track everything you eat - no guessing
- Don't change anything based on daily weight
Step 4: Review and Adjust
After 7 days, calculate your weekly average weight. Compare it to your starting point.
On Track
Fat loss: 0.5-1% body weight lost per week
Muscle gain: 0.25-0.5% gained per week
Action: Keep calories the same
Too Slow
Less than expected change after 2 weeks
Action: Adjust by 100-200 calories
Too Fast
Losing more than 1% per week (fat loss)
Action: Add 100-200 calories back
Common Mistakes After TDEE Calculation
TDEE calculators are estimates based on averages. Your actual TDEE could be 10-15% higher or lower. The calculation gets you in the ballpark - real-world tracking tells you where you actually are.
Weight didn't drop after 3 days? That's not a plateau - that's normal fluctuation. Give any calorie target at least 2 weeks before deciding it's not working.
Studies show people underestimate intake by 30-50%. If you're not losing weight "in a deficit," you're probably not in one. Weigh food, read labels, count oils and sauces.
When to Recalculate
Your TDEE changes as your body changes. Recalculate when:
- Weight changes by 10-15 lbs - less mass means lower TDEE
- Activity level changes significantly - new job, started/stopped training
- Every 8-12 weeks during a diet - metabolic adaptation is real
- Progress completely stalls for 3+ weeks - despite accurate tracking
As you lose weight, you have less mass to maintain (lower BMR). Your body also becomes more efficient, burning slightly fewer calories for the same activities. This is normal - adjust and continue.