Creatine Dosage Calculator

Creatine is the most well-researched sports supplement in existence, with decades of peer-reviewed evidence supporting its effectiveness for increasing strength, power output, and muscle mass. Dosing follows a well-established two-phase protocol: loading (optional) and maintenance.

Loading phase formula: Loading Dose = 0.3 g/kg of body weight per day, split into 4 doses Duration: 5–7 days

Maintenance phase formula: Maintenance Dose = 3–5 grams per day (flat dose, regardless of weight)

Alternative (no loading): Gradual approach: 3–5 g/day from day one — achieves full muscle saturation in approximately 28 days instead of 5–7 days.

What each variable means:

• Loading dose — rapidly saturates muscle creatine stores in 5–7 days. Causes temporary water retention of 1–3 lbs as muscles draw water into cells.
• Maintenance dose — replenishes creatine lost through natural turnover (~2% of muscle creatine degraded per day).
• Saturation point — muscles store creatine up to ~160 mmol/kg dry muscle weight. Beyond this, additional creatine is excreted.
• Form — creatine monohydrate is the gold standard. Other forms (HCl, ethyl ester, buffered) are more expensive without proven superiority.

Worked example: A 80 kg (176 lb) male athlete starting creatine.

Loading phase (days 1–7): Daily dose = 0.3 × 80 = 24 grams/day Split into 4 doses of 6g each (with meals)

Maintenance (day 8 onward): Daily dose = 5 grams/day (typically taken with any meal)

Timing:

• Post-workout supplementation shows a slight advantage over pre-workout in some studies
• Consistency of daily dosing matters more than timing
• Taking with carbohydrates (juice) marginally improves uptake

Safety and common concerns:

• Creatine is safe for healthy adults at standard doses; supported by 30+ years of research
• Does NOT cause kidney damage in healthy individuals (myth)
• Increase water intake by 500 mL/day during loading to support hydration
• Vegetarians and vegans respond more dramatically (baseline stores are lower from diet)

Expected results: 5–15% improvement in maximal strength exercises within 4–8 weeks; 1–2 kg lean mass gain in first month (primarily intracellular water + muscle glycogen, then true lean tissue with training).