Build and budget your biohacking longevity stack. Select from 20+ interventions across supplements, testing, devices, lifestyle, and premium categories with live cost tracking.
Enter your values
Open the Longevity Stack Calculator and fill in the required input fields with your numbers or selections.
Review the calculation
The tool automatically computes the result as you type. Double-check your inputs to ensure accuracy.
Interpret your results
Review the calculated output along with any breakdowns, charts, or explanations provided to understand what the numbers mean for your situation.
Formulas based on peer-reviewed research cited by CDC and NIH
Published by ConvertCrunch Editorial Team | Our Methodology
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Body Fat Calculator (Navy Method)
Calculate body fat percentage using the U.S. Navy method. Shows lean mass, fat mass, and body fat category.
Calorie Calculator
Calculate how many calories you should eat per day to lose, maintain, or gain weight. Uses the Mifflin-St Jeor equation with activity level and macronutrient breakdown.
Daily Water Intake Calculator
Calculate daily water needs based on body weight, activity level, and climate. Shows glasses and bottles per day.
Lifespan Calculator
Estimate your life expectancy based on age, sex, lifestyle, diet, exercise, sleep, stress, and health factors. See how long you have left and how to improve it.
Macro Calculator
Calculate protein, carb, and fat grams from your calorie target. Presets for cutting, maintaining, and bulking.
One Rep Max (1RM) Calculator
Estimate your 1RM via Epley, Brzycki, and Lombardi formulas. Percentage chart for training loads.
Pregnancy Due Date Calculator
Calculate your due date from LMP or conception date. Shows trimester timeline, gestational age, and week-by-week milestones.
Running Pace Calculator
Calculate pace from distance and time, or finish time from pace and distance. Split table for 5K, 10K, half marathon, and marathon.
Select interventions above to see your stack summary.
Biohacking is the practice of using science, technology, and self-experimentation to optimize your body's performance, health, and lifespan. Longevity optimization focuses specifically on interventions that may slow biological aging, prevent age-related disease, and extend healthspan — the number of years lived in good health.
A "longevity stack" is the combination of supplements, tests, devices, and lifestyle practices you adopt as part of your health optimization routine. The key is to start with the highest-impact, lowest-cost interventions first and expand as your budget allows.
Focus on foundational supplements (Vitamin D, Omega-3, Magnesium, Creatine), a gym membership, and basic sleep optimization. These provide roughly 80% of the benefit at under 20% of the cost of a full premium stack.
Add NAD+ precursors (NMN/NR), quarterly bloodwork, a wearable for HRV and sleep tracking, organic food upgrades, and additional supplements like collagen and probiotics.
Include advanced diagnostics (epigenetic age tests, DEXA scans, CGM), heat and cold exposure, red light therapy, and optional pharmaceutical interventions like low-dose metformin or rapamycin under physician supervision.
This calculator is for educational and budgeting purposes only. It does not constitute medical advice. Pharmaceutical interventions (metformin, rapamycin, HRT) require a prescription and physician oversight. Always consult a qualified healthcare provider before starting any new supplement, medication, or health protocol. Individual results vary and many longevity interventions are based on emerging research that has not been fully validated in long-term human trials.