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Muscle Gain Calculator

Calculate your calorie surplus and protein targets to maximize muscle gain.

Complete Guide

Overview

Building muscle requires a consistent calorie surplus combined with progressive resistance training and adequate protein. The optimal surplus depends on your experience level — beginners can build muscle faster than advanced lifters.

How to Use

Enter your current weight.

Enter your TDEE (use our TDEE Calculator).

Select your training experience level.

Click Calculate for your muscle-building targets.

Formula & Calculation

Target Calories = TDEE + Surplus
Surplus by level: Beginner=+300, Intermediate=+200, Advanced=+150 kcal
Protein = 2.2g × Weight(kg)

Benefits of Using This Calculator

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Evidence-Based

Uses research-backed surplus sizes to minimize fat gain.

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Experience-Tailored

Different targets for beginners vs advanced lifters.

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Protein Guidance

Optimal protein target for muscle protein synthesis.

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Realistic Progress

Sets achievable monthly muscle gain expectations.

Pro Tips

Train each muscle group 2× per week minimum.
Prioritize sleep — growth hormone peaks during deep sleep.
Progressive overload is the primary driver of muscle growth.
Body fat tends to increase slightly during a bulk — aim for lean gains.

In-Depth Guide

Muscle Gain Calculator: Calories and Protein for Building Muscle

Building muscle requires a calorie surplus, adequate protein, and progressive training. But the size of the surplus that works varies by experience level. This calculator finds your precise calorie and protein targets to maximise muscle gain while minimising unnecessary fat accumulation.

The Formula

Target Calories = TDEE + Surplus
Beginner: +300 kcal | Intermediate: +200 kcal | Advanced: +150 kcal

Daily Protein = Body Weight (kg) × 2.2g

Expected Monthly Muscle Gain

Experience	Surplus	Expected Monthly Gain
Beginner (0–1 years)	+300 kcal	1.0–1.5 kg
Intermediate (1–3 years)	+200 kcal	0.5–0.75 kg
Advanced (3+ years)	+150 kcal	0.25–0.5 kg

Worked Example

80 kg, TDEE 2600 kcal, intermediate lifter:
Target = 2600 + 200 = 2800 kcal/day | Protein = 80 × 2.2 = 176g/day

Get your targets with our free Muscle Gain Calculator.

Practical Tips

Train each muscle group at least twice per week. Research shows twice-weekly volume produces significantly more hypertrophy than once-weekly.

Progressive overload is essential. Add weight, reps, or sets over time — the same workout indefinitely produces minimal growth after initial adaptation.

Sleep 7–9 hours. Most growth hormone is released during deep sleep — inadequate sleep is a commonly overlooked barrier to muscle gain.

Track monthly. If gaining more than 0.5–1% of body weight monthly, reduce surplus by 100 kcal to minimise fat accumulation.

Final Thoughts

Muscle gain is slow, deliberate work. These targets give you the nutritional foundation — consistent progressive training does the rest. Patience and precision are the two most effective tools in any muscle-building program.

Calculate your personalised targets with our free Muscle Gain Calculator.