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Hardgainer Tools

Calorie Calculator

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RoG-First Hardgainer Score™ Pro Body Composition Pro Metabolism Analysis Pro Weekly Plan Pro

By Christian Schönbauer · Training since 1999 · Starting weight under 50 kg · Peak +25 kg · Mag. · Founder, Hardgainer Performance Nutrition®

How it works
  1. 1Choose your rate of gain — click one of the five zones
  2. 2Set your sex, age, height and weight
  3. 3Your calorie target updates automatically in real time
  4. 4Scroll down for macros, meal breakdown and comparison table
Primary Control
How fast do you
want to gain?
Maintenance
0 kg/mo
Lean
~0.8 kg/mo
Moderate
~1.2 kg/mo
Aggressive
~1.8 kg/mo
Maximum
2.5+ kg/mo
0.18
kg / week
Required Surplus
+198 kcal/day
Realistic: 0.12–0.24 kg/wk
0 kg/wk0.58 kg/wk
Gram-precise control of your rate of gain
Body Stats
Sex
Age
28y
1675
Height
178cm
150210
Weight
74kg
45 kg130 kg
Activity & Training
Activity Level
Moderate
SedentaryLightModerateActiveVery active
Training Days / Week
4 days active
147
Compensate your fast metabolism
Macro Fine-Tuning
Protein
2.2g/kg
1.63.0
Fat
0.9g/kg
0.61.5
Your optimal macros per kilogram
Meals / Day
Lean Bulk · Your Calorie Target
–
kcal / day
TDEE – Surplus – Training Bonus +0 kcal RoG – kg/wk
📊
Realistic Range for You
– kg/week
TDEE estimates have ±10–15% individual variation. Track for 10–14 days, then adjust.
Optimal Zone
00.5+
How realistic is your goal really?
Macros · Selected Target
–
Protein
– kcal
–
Carbs
– kcal
–
Fat
– kcal
Per Meal
–
Protein
– kcal
–
Carbs
– kcal
–
Fat
– kcal
Hydration
–
L / day
Surplus
–
kcal / day
Meals
–
per day
Macro Splits · Same Calorie Target
– kcal/day
Click to select · all splits hit the same calorie target.
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Hardgainer Score™ · Body Composition · Metabolism Analysis · Weekly Plan + Auto-Cycling
PRO Dashboard · Your Body at a Glance
Pro
Hardgainer Score™
–
/ 100
Score Breakdown
Protein Ratio
RoG Zone
Training Frequency
Surplus Efficiency
Setup Analysis
Enter your data…
Weight Trajectory · 24-Week Projection
Expected Curve
Optimal Corridor
Confidence Band
Metabolism Analysis
BMR
–%
EAT
–%
NEAT
–%
TEF
–%
–
Weekly Plan · Auto-Cycling Calories
Click days to toggle
Avg – kcal/day
Training – kcal
Rest – kcal
Macro Breakdown
0%
Protein
– g · –% of calories
0%
Carbs
– g · –% of calories
0%
Fat
– g · –% of calories
3 Macro Splits · Same Calorie Target
Protein
Carbs
Fat
Body Composition Projection · Muscle vs. Fat
–
Full Timeline · Week 1–24
Next Step · Hardgainer Mission Briefing™

Calorie target set. Now comes execution.

Your target: – kcal/day · –. Get your Hardgainer Hacks™ instant start — then one clear mission every week.

→ Get Mission Briefing™
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FAQ
Why do I choose kg/week instead of calories?

Because you think in results, not formulas. The calculator works backwards: desired gain → required surplus → calorie target. More intuitive and honest.

What are EAT, NEAT and TEF?

EAT = Exercise Activity Thermogenesis (training), NEAT = Non-Exercise Activity Thermogenesis (daily movement), TEF = Thermic Effect of Food (digestion energy). Together with BMR they make up your TDEE.

Do I need Pro or is the free calculator enough?

The free calorie calculator gives you your calorie target, macros and KPIs — enough to get started. Pro gives you the full picture: Hardgainer Score™, body composition projection, auto-cycling weekly plan, metabolism analysis, macro splits and setup analysis with concrete optimisation suggestions. If you don't want to guess but know, Pro is the shorter path.

These tools are for general informational purposes only and do not replace medical, dietary or physiotherapeutic advice. Use at your own responsibility. Full disclaimer

Christian Schönbauer
About the Author Mag. Christian Schönbauer Founder & Managing Director · Hardgainer Performance Nutrition GmbH

Training since 1999, starting weight under 50 kg. Over 25 years of training and nutrition practice distilled into a system for hardgainers.

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