Calculators
GainsX Precision Hub • 100% Free Access
Scientific Fitness Calculators
Eliminate guesswork from your calories, supplement dosages, and progression. Built on published sports trials, clinical formulas, and Indian climate adjustments.
15 Precision Calculators
No Registration Required
Peer-Reviewed Formulas
⭐ GainsX Signature Suite Exclusive
Engineered specifically for lifters in India
⭐ Signature Protocol
Personalized Supplement Stack Planner
Stop wasting money on guesswork. Input your physique goal, monthly budget in INR, training intensity, and dietary limits to receive a medically vetted, tiered supplement regimen complete with daily timing schedules.
Engineered Output:
• Foundation Tier (Essential daily compounds)
• Performance Boosters (Goal-specific additions)
• Intraday Timing Matrix (Pre / Post / Bedtime)
• Monthly INR Breakdown (Zero budget waste)
Clinical Protocol
Creatine Dose & Saturation Calculator
Calculates bodyweight-calibrated loading (0.3g/kg) and maintenance doses. Delivers a week-by-week muscle saturation timeline, daily water mandates, and myth debunking.
12-Week Periodization
12-Week Progressive Overload Planner
Generate a structured 12-week lifting cycle with automated weight increments, scheduled deload weeks, and volume tonnage tracking to break stubborn strength plateaus.
Natural Muscle Ceiling
FFMI & Natural Muscle Potential
Normalized Fat-Free Mass Index benchmarked against the landmark Kouri et al. 1995 dataset. Shows your maximum natural lean tissue ceiling and current percentile rank.
Indian Climate Adjusted
Daily Water & Hydration Calculator
Standard formulas fail in tropical heat. Formulates hydration targets based on ambient temperature, sweat loss, workout intensity, and creatine osmotic water retention.
🥗 Nutrition, Calories & Fat Loss
Energy balance & macronutrient partitioning
Calorie Core
TDEE Calorie Calculator
Computes Total Daily Energy Expenditure using dual Mifflin-St Jeor and Harris-Benedict algorithms. Delivers exact calorie targets across 7 distinct physique goals.
Macronutrients
Macro Ratio Calculator
Converts daily calories into precise gram targets of protein, complex carbs, and essential fats. Includes meal-by-meal nutrient distribution for 4 to 6 meals.
Indian Diet Analyzer
Protein Needs & Food Gap Calculator
Calculates daily protein targets for hypertrophy. Maps protein density across Indian dietary staples (paneer, dal, chicken) and calculates exact scoops of whey to bridge the gap.
Fat Loss Protocol
Calorie Deficit & Fat Loss Planner
Maps a safe, sustainable fat loss trajectory with weekly milestones. Enforces metabolic floor safety limits to safeguard thyroid output and prevent muscle catabolism.
💪 Muscle, Strength & Mechanics
Powerlifting standards & anthropometrics
4 Scientific Models
One Rep Max (1RM) Calculator
Blends Epley, Brzycki, Lombardi, and O’Conner algorithms for pinpoint 1RM estimates. Generates working rep percentages from 60% to 95% for programming.
IPF Standards
Wilks Score & IPF GL Points
Quantifies pound-for-pound powerlifting strength across bodyweight classes using official 2016 Wilks coefficients and modern IPF GoodLift metrics.
US Navy Formula
Body Fat % (No Calipers Needed)
Calculates body composition using neck, waist, and hip circumference measurements. Computes lean mass, fat mass in kilograms, and fat loss targets.
❤️ Health, Longevity & Biomarkers
Cardiovascular metrics & body frame benchmarks
WHO Asian Criteria
BMI & Ponderal Index (Asian Standard)
Body Mass Index calibrated to WHO South Asian criteria where overweight begins at 23 due to increased visceral fat and cardiovascular risk.
5 Clinical Equations
Ideal Body Weight & Frame Size
Aggregates Devine, Robinson, Miller, and Hamwi equations alongside BMI medians. Incorporates wrist circumference to accurately gauge bone frame size.
Cardiovascular Age
VO2 Max & Heart Rate Zones
Estimate maximum aerobic capacity through Resting Heart Rate, 1.5-Mile Run, or Rockport Walk protocols. Establishes Zone 1 to Zone 5 training heart rates.
🔍
No matching calculators found
Try searching for “Creatine”, “Protein”, “1RM”, “TDEE”, “Stack”, or “Water”.
