// Supplement Calculators

Creatine Calculator

Two published protocols that arrive at the same place. One of them takes a week; the other takes a month and less arithmetic.

Your details

Your result

Daily dose
3–5g
Commonly used daily dose
3–5g
At 0.03 g/kg, your bodyweight gives
2.3g
  • Two published protocols, one destination. Muscle stores saturate either way: loading gets there in about five to seven days, and taking the daily dose on its own gets there in three to four weeks. Loading is a speed choice, not a requirement, and skipping it costs nothing but time.
  • The per-kilogram row is the position stand's individualised figure, 0.03 g/kg a day. For most adults it lands at or below the flat 3–5 g, which is why the flat range is what the page leads with — bodyweight is not a reason to keep pushing a maintenance dose upward past the protocol that was actually studied.
  • This is what the literature describes, not a dose set for you. Anyone pregnant, breastfeeding, taking prescribed medication or with kidney disease should be talking to a doctor rather than a calculator.

Estimates are for general guidance only and are not medical advice. For a personalised plan, book a free guided tour at RPM Gym.

What your result means

The headline is the daily dose, and it is a range rather than a number because that is how the literature states it: 3 to 5 grams a day of creatine monohydrate. Beneath it sits the per-kilogram figure for context, and — only if you chose to load — what the loading week works out to at your bodyweight.

The per-kilogram row is worth reading carefully, because it usually surprises people. The individualised maintenance figure in the position stand is 0.03 g/kg/day, which at 70 kg is 2.1 g — below the flat range, not above it. Bodyweight is a much weaker lever here than supplement marketing implies, and a bigger person does not need a proportionally bigger daily scoop.

Loading and not loading reach the same destination. Muscle stores saturate either way; the difference is how long it takes to get there — roughly five to seven days at the loading dose, three to four weeks at the daily one. That makes loading a speed choice, and skipping it costs nothing except time.

What the page is describing is what the protocols say, not what you should take. Anyone pregnant, breastfeeding, taking prescribed medication or with kidney disease should be having this conversation with a doctor, and a calculator is not one.

How it is calculated

The ISSN position stand's two protocols, reported rather than personalised

Daily dose = 3–5 g/day, as stated. Not derived from your inputs. Per-kilogram context = bodyweight × 0.03 g/kg/day Loading, if chosen: Daily loading amount = bodyweight × 0.3 g/kg/day Duration = 5–7 days, then drop to the daily dose Split into roughly four doses across the day The flat range is the headline because it is what the evidence is stated in. Bodyweight is shown as context, not as a multiplier on the answer.

What it assumes

  • Creatine monohydrate. The protocols were established on it, and the various alternative forms sold at a premium do not inherit that evidence by resembling it chemically.
  • The goal is saturating muscle stores and then keeping them there, which is what both protocols do. Nothing here is about a therapeutic or clinical dose.
  • You are an adult without a condition that makes this a medical question. The page cannot know that, which is why it says so rather than assuming it.
  • Consistency matters more than timing. The stores are what matter, and they are a function of taking it regularly rather than of taking it at a particular hour.

Units and rounding

  • Bodyweight in kilograms; doses in grams. The daily dose comes back as the published range rather than as a single figure.
  • The loading row is rounded to the nearest gram and split four ways, because splitting is how the protocol states it and because a single 25 g dose is the reliable way to give yourself stomach ache.
  • A level teaspoon of creatine monohydrate is roughly 3 to 5 g depending on how it is packed, which is close enough for the daily dose and not close enough for loading — use the scoop that came with it, or scales.

Worked example

Someone at 88 kg who has decided to load first.

  1. Loading: 88 × 0.3 = 26 g a day
  2. Split across the day: roughly 4 × 7 g
  3. Held for 5 to 7 days
  4. Then the daily dose: 3–5 g
  5. For contrast, the per-kilogram maintenance figure at 88 kg is 88 × 0.03 = 2.6 g

Twenty-six grams a day for a week, then three to five indefinitely. Notice the shape of that: the loading number scales hard with bodyweight and the maintenance number barely does — 2.6 g at 88 kg against 2.1 g at 70 kg, both under the flat range the page leads with. Whichever route you take, you arrive at the same saturation; loading just gets there about three weeks sooner.

Limitations

  • The page reports protocols; it does not prescribe. The old version produced a bodyweight-scaled figure that looked personalised and had no source, which is a worse failure than a range that says plainly what it is.
  • Response is not universal. A meaningful proportion of people are already close to saturated from diet — creatine comes from meat and fish — and gain little from supplementing. Nothing here can identify which group you are in.
  • Loading is more likely to upset your stomach, which is the practical argument against it rather than any safety concern. Twenty-plus grams in a day is a lot of anything, and it is why the protocol splits the dose.
  • The early weight gain is water and it is not fat. Creatine draws water into muscle, and a kilogram or two on the scale in the first fortnight is the expected outcome rather than a problem — but if you are tracking bodyweight for another reason, it will confound that reading for a few weeks.
  • This is not medical advice and cannot be. Kidney disease, pregnancy, breastfeeding and prescribed medication all change the question into one for a clinician, and the calculator has no way of knowing any of them apply.

What to do next

  • Pick monohydrate and pick the cheapest reputable one. It is the form the evidence was built on, and the premium forms are asking you to pay for the resemblance.
  • If you skip loading, take the daily dose and stop thinking about it. Saturation arrives in three to four weeks either way, and there is nothing to monitor in the meantime.
  • If you load, split the day's amount into about four and take them with meals. That is the protocol as stated and it is also the practical answer to the stomach problem.
  • Expect the scale to move up a little in the first fortnight and do not read it as fat. If you are mid-way through a fat-loss block, it is worth knowing that before it happens rather than after.

Sources

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// Frequently Asked

Questions, answered.

How much creatine should I take a day?

The literature states 3 to 5 grams a day of monohydrate, and that is what the page leads with. The individualised figure in the position stand is 0.03 g per kilogram, which for most people lands at or below that range rather than above it — 2.1 g at 70 kg. Bodyweight moves this answer far less than people expect.

Do I need to do a loading phase?

No. Loading and taking the daily dose reach the same saturation; the difference is about five to seven days versus three to four weeks. It is a speed choice, and the only real cost of skipping it is patience.

Why does the per-kilogram number come out lower than 3 to 5 grams?

Because 0.03 g/kg is a small multiplier, and most people weigh less than the 100 to 167 kg it would take to reach 3 to 5 grams that way. This is exactly why the previous version of this tool was wrong: it used an unsourced 0.04 and a floor of 3 g, so heavier readers were told to take progressively more, when the published per-kilogram figure points the other way.

Does a heavier person need more creatine?

A little more during loading, where the dose genuinely scales with bodyweight, and barely any more for maintenance. The daily range is stated flat for a reason, and pushing it upward on the strength of bodyweight alone goes past what the protocol actually covers.

When should I take it?

Whenever you will reliably remember. What matters is the stores staying topped up, and those are a function of taking it consistently rather than of hitting a particular window. The best time is the one you will not skip.

Will it make me gain weight?

Usually a kilogram or two in the first couple of weeks, and it is water drawn into the muscle rather than fat. If nothing else in your training or eating changed and the scale moved shortly after you started, that is almost certainly what it was.

Is creatine monohydrate better than the other forms?

It is the one the protocols on this page were established with, which is a different claim from it being chemically superior — but it is the claim that matters when you are deciding what to buy. The alternatives are generally more expensive and are not carrying the same weight of evidence behind the doses quoted here.

Five grams a day is not the hard part of any of this.

The supplement is the easiest variable to get right and the least of what decides the outcome. If you would rather spend that attention on the training instead, the guided tour at Al Manhal is free.

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