Creatine Dosage Calculator

The Creatine Dosage Calculator estimates a standard daily creatine monohydrate dose from body weight and shows the optional loading-phase approach.

Most people do not need to load creatine. A daily maintenance dose works more gradually, while loading saturates muscle creatine stores faster.

This calculator is for healthy adults using creatine for fitness. Medical conditions, pregnancy, kidney disease and medication concerns should be reviewed with a clinician before supplementing.

To track this over time, try Bodly, a free iPhone app.

Your creatine plan
kg
Suggested creatine dose
Daily maintenance3.0g/day
Muscle stores full inAbout 28 days
Optional loading dose24.0 g/day
Loading servings4 x 6.0 g
Loading duration7 days

Take the maintenance amount daily; loading is optional.

Maintenance dose: the simple daily option

A common maintenance intake is 3-5 g of creatine monohydrate per day. The calculator uses a conservative body-weight estimate of about 0.03 g per kg, with a practical floor of 3 g and a standard cap of 5 g.

The larger-athlete option uses about 0.05 g per kg, between 5 and 10 g a day, the range the International Society of Sports Nutrition gives for larger athletes. The loading option leads with the loading dose and shows when your stores are full: about a week, instead of about four weeks on maintenance alone.

Maintenance dosing is the easiest plan because it does not require multiple servings. It also reduces the chance of stomach discomfort that some people get from larger single doses.

Optional loading phase

A classic loading phase uses about 0.3 g/kg/day split into several servings for 5-7 days, then drops to maintenance. Loading is optional; taking maintenance daily can also saturate stores over several weeks.

The main reason to load is speed. If you want muscle creatine stores to rise quickly before a training block, loading is useful. If you care more about simplicity, skip loading and take the maintenance amount daily.

Creatine dosing options
PlanTypical doseBest for
Maintenance only3-5 g/daySimple long-term use
Loading phaseAbout 0.3 g/kg/day for 5-7 daysFaster saturation
Larger athlete maintenanceOften 5-7 g/dayHeavier users with more lean mass

Creatine dosage examples by body weight

These examples show the same logic used in the calculator. Loading doses are split because taking a large daily amount in one serving is more likely to cause stomach discomfort.

Example creatine monohydrate doses
Body weightMaintenance estimateOptional loading dose
60 kg (132 lb)3.0 g/day18.0 g/day split into 4 servings
80 kg (176 lb)3.0 g/day24.0 g/day split into 4 servings
100 kg (220 lb)3.0 g/day25.0 g/day split into 4 servings

How to take creatine

Creatine timing matters less than consistency. Taking it with a meal can be easier on the stomach, and taking it every day is more important than taking it before or after a workout.

Creatine monohydrate is the best-studied form. Capsules, powder and mixed drinks can all work if the dose is consistent and the product is reputable. Look for simple products without unnecessary blends if you only want creatine.

What happens if you miss a dose

Missing one day is not a big deal. Creatine works by raising stored creatine over time, so the long-term average matters more than perfect timing.

If you miss a dose, resume your normal amount the next day. You usually do not need to double up.

Creatine and body-weight changes

Some people gain 1-3 lb during the first weeks of creatine use because of increased water stored inside muscle. That is not the same as fat gain.

If your goal is fat loss, track waist, photos, strength and weekly average scale weight instead of reacting to a single scale spike.

Who should be cautious

Healthy adults generally tolerate standard creatine monohydrate doses well, but supplement decisions are not identical for everyone.

Ask a clinician first if you have kidney disease, are pregnant, are under 18, use medications that affect kidney function or have been told to follow a fluid or protein restriction.

Further reading

Frequently asked questions

Sources & references

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