AI meal photo estimates
Snap a photo of your meal for an estimate of protein, macros and calories.
FREE TOOL · TDEE CALCULATOR
Calorie Calculator (TDEE)
Get a friendly first estimate of how many calories your body uses each day, and a target for your goal, whether that is maintaining, a gentle fat loss goal, or building strength.
BMR + TDEEGoal targetlb / ft + in or kg / cm
In the app
Keep your numbers on track
From AI meal scanning to workout tracking, ProteinSnaps helps you hit your macro targets day to day.
Barcode scanner
Scan packaged food barcodes to log them in seconds.
Fill the Gap
See what's left of your protein and macros for the day.
How it works
1. Resting energy (BMR) with Mifflin-St Jeor: women 10 × kg + 6.25 × cm − 5 × age − 161; men … + 5. 2. TDEE = BMR × activity factor (1.2, 1.375, 1.55, 1.725 or 1.9). 3. Goal: the app's settings of −400 (fat loss), 0 (maintain), ±100 (recomp) or +350 kcal (build). Example: a 30-year-old woman, 165 cm, 65 kg has a BMR of about 1,370 kcal; lightly active, that's about 1,884 kcal to maintain.
Next: split your calories into macros or find your daily protein.
FAQ
What is TDEE?
TDEE (total daily energy expenditure) is an estimate of the calories you use in a day. This calculator first estimates your resting energy (BMR) with the Mifflin-St Jeor equation, then multiplies it by an activity factor from 1.2 (mostly sitting) to 1.9 (very active).
Which formula does this calculator use?
The Mifflin-St Jeor equation (1990). Women: 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161. Men: the same, but +5 instead of −161.
How are the goal calories set?
We use the same settings as the ProteinSnaps app: a fat loss goal is a gentle 400 kcal below maintenance, build is 350 kcal above, recomp is about maintenance (±100 kcal), and maintain is no change. These are app settings, not medical advice.
How accurate is it?
It is a starting estimate. Everyone is different, so your real needs may be higher or lower. In the ProteinSnaps app, after about two weeks of logging, your intake is compared with your weight trend to estimate your real maintenance calories.
Who should not use a calorie target?
If you are pregnant, breastfeeding, under 18, have a medical condition, or have a history of disordered eating, please talk to a doctor or registered dietitian instead.
Sources
Disclaimer: this calculator gives general estimates for healthy adults and is not medical advice. It does not diagnose or treat any condition, and results are not guaranteed.
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