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Creatine Loading Dose Calculator

Enter your body weight to estimate a creatine loading dose.

How it is calculated

The only input is body weight in kilograms, which must be above zero. The loading dose is loading (g/day) = body weight (kg) × 0.3, shown to one decimal place and labelled for a 5 to 7 day phase. The tool then divides that daily amount into four equal servings: per serving = loading ÷ 4. The maintenance line is a fixed range of 3 to 5 g per day after loading; it does not scale with weight. Height, age, muscle mass, training load and any medical condition are not considered, and the figures are educational only, not medical advice. Product labels and a doctor or dietitian take priority if they differ.

Worked example

An 80 kg person. Loading dose: 80 × 0.3 = 24.0 g/day (for 5–7 days). Split into four doses: 24.0 ÷ 4 = 6.0 g per serving, four times a day. After the loading days the tool lists 3–5 g/day as the maintenance range. A 72.5 kg person would get 21.8 g/day, or 5.4 g × 4.

Try this example →

Common mistakes

  • Entering weight in pounds; the tool expects kilograms, so 176 lb typed as 176 gives more than double the right amount.
  • Taking the whole daily loading amount in one sitting instead of the four servings the split line shows.
  • Continuing the loading amount beyond the 5 to 7 days shown; after that the maintenance range applies.
  • Expecting the maintenance range to rise with body weight; the tool shows the same fixed 3–5 g/day for everyone.
  • Treating the output as personal medical guidance; it is a formula result, and anyone with a health condition or taking medication should ask a professional first.

Sources

About this calculator

The classic creatine monohydrate loading protocol saturates the muscles’ phosphocreatine stores faster than a flat daily dose would: about 0.3 grams per kilogram of body weight per day, typically split into four servings, taken for 5 to 7 days, followed by a lower daily maintenance dose — commonly around 3 to 5 grams per day, or roughly 0.03 g/kg — to keep stores topped up.

Sports scientists, strength coaches and athletes use loading when they want the ergogenic benefit (more available energy for short, high-intensity efforts) to kick in within about a week rather than the three to four weeks it takes to reach saturation with maintenance dosing alone, though research shows both approaches reach the same steady-state muscle creatine level eventually. The loading and maintenance doses are general estimates and not medical advice.

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Comments (1)

  • Editorial team

    Check your own measuring tool against the serving line. For 80 kg the split gives 6.0 g per serving, and the scoop that came with your tub may not hold that, so weigh a level scoop once on a kitchen scale before you rely on scoops. The tool uses body weight only, and anyone with a health condition or on medication should ask a doctor first. Do you measure by scoop or by scale?

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