Free, evidence-based supplement calculators and tools — dosing, timing, unit conversions, stack builders and brand comparisons. Educational only; not medical advice. Talk to a healthcare professional before changing your regimen.
Dose Calculators
- Apigenin Dose Calculator (Sleep, Longevity, By Goal)
- B12 Dose by Form Calculator (Methyl vs Cyano vs Hydroxo vs Adeno)
- Berberine Dose Calculator (Blood Sugar, Cholesterol, PCOS, Weight)
- Beta-Alanine Dose Calculator (Carnosine Loading + Paresthesia)
- Citrulline Dose Calculator (L-Citrulline vs Citrulline Malate)
- Collagen Dose Calculator
- Cordyceps Dose Calculator (Militaris vs Sinensis, By Goal)
- Creatine Dose Calculator (Loading vs Maintenance, By Body Weight)
- Glutamine Dose Calculator (Recovery / GI / Clinical)
- HMB Dose Calculator (Anti-Catabolic / Sarcopenia / Cutting)
- Iron Dose Calculator (Ferrous vs Ferric vs Heme, by Form)
- L-Theanine Dose Calculator (With Caffeine Ratio, Sleep, Anxiety)
- Lion’s Mane Dose Calculator (Fruiting Body vs Mycelium, By Goal)
- Magnesium Dose Calculator (Elemental Mg by Form)
- NAC (N-Acetylcysteine) Dose Calculator (Hepatoprotection, Cognitive, PCOS)
- NMN / NR Dose Calculator (NAD+ Precursors)
- Quercetin Dose Calculator (Allergies / Senolytic / CV)
- Resveratrol Dose Calculator (Trans-Resveratrol + NMN/NR Pairing)
- Spermidine Dose Calculator (Wheat Germ vs Spermidine3, By Goal)
- Vitamin C Dose Calculator (Bowel Tolerance, Forms, Iron Pairing)
- Vitamin D Dose Calculator
- Zinc Dose Calculator (Picolinate vs Citrate vs Gluconate, By Form)
Stack Builders
- Athlete Recovery Stack Calculator (Creatine + Tart Cherry + Curcumin + Omega-3 + HMB)
- B-Complex Stack Calculator (B1/B2/B3/B5/B6/B12 Targets)
- Bone Stack Calculator (Calcium + D + K2 + Mg + Protein)
- Cognitive Stack Calculator (Choline + PS + Omega-3 + B12)
- Immune Stack Calculator (Zinc + Vit C + Vit D + Elderberry + Quercetin)
- Pre-Workout Stack Calculator (Caffeine + Theanine + Creatine + Beta-Alanine + Citrulline)
- Vitamin D + K2 Stack Calculator (Synergy Dosing)
Converters & Comparators
- Ashwagandha Extract Converter (KSM-66 vs Sensoril vs Generic Root)
- Collagen Protein Per Scoop Calculator (Vital Proteins vs Sports Research vs Ancient)
- CoQ10 vs Ubiquinol Calculator (By Age, Statin, Heart)
- Curcumin Bioavailability Comparator (Meriva vs BCM-95 vs C3 + Black Pepper)
- DTC Greens Powder Cost & Ingredient Comparator
- Peptide Comparator: Side-by-Side
- Probiotic CFU Comparator (Strain Diversity + Dose)
- Vitamin A, E, K Unit Converter (mcg ↔ IU)
- Vitamin D Unit Converter (mcg ↔ IU)
Timing Tools
GLP-1 & Weight-Loss Tools
Reference, Checkers & Guides
- Best Peptide Tracker Apps: Honest Comparison for GLP-1 and Prescription Peptide Users
- Electrolyte Loss & Replacement Calculator (Sodium, Potassium, Mg)
- Fiber Target Calculator (Soluble + Insoluble, by Goal)
- How We Review Supplements — Useful Vitamins
- MCG to IU Converter: Simplify Vitamin Measurement Conversion
- Omega-3 EPA + DHA Calculator (Fish Oil vs Algae, Concentration Math)
- Peptide Reconstitution Calculator
- Supplement Claims Decoder: Understanding Labels & Marketing
- Supplement Cost Calculator: Compare Prices & Save
- Supplement Needs Assessment: Find Your Perfect Vitamins
- Vitamin D Dosage Calculator: Find Your Daily Intake
- Warfarin Vitamin K Interaction: Dosage, INR & Calculator [Expert Guide]
- Which Vitamin Deficiency Do You Have? Take This 2-Minute Quiz (Backed by Research)
