Creatine Monohydrate Loading & Maintenance Dosage Calculator
Creatine monohydrate is one of the most researched sports supplements available, and dosing it correctly comes down to bodyweight, not fixed 5 g scoops marketed on tubs. This calculator scales both the loading and maintenance phases to your own mass so you saturate your muscle stores efficiently without wasting product.
Your bodyweight of 75.0 kg suggests a loading dose of 22.5 g/day and a long-term maintenance dose of 5.0 g/day.
| Phase | Daily grams | Per-dose grams | Duration |
|---|---|---|---|
| Loading (fast) | 22.5 | 5.6 | 5-7 days |
| Maintenance | 5.0 | 5.0 | Ongoing |
| Monthly usage (g) | 255 | - | 30 days |
| 300 g tub duration | 35 days | - | - |
- 1.
loading_g_per_day = weight_kg × 0.3 - 2.
per_dose_g = loading_g_per_day / 4 - 3.
maintenance_g_per_day = max(5, weight_kg × 0.04)
How to Use This Calculator
1. Enter your details
Use the labelled fields and units that match your situation.
2. Calculate instantly
The result, visual comparison, and working update as values change.
3. Review your result
Check assumptions, then copy, print, or share the calculation.
Formula & step-by-step maths
- weight_kg
- Bodyweight converted to kilograms
- loading_g_per_day
- Total grams during the loading phase
- maintenance_g_per_day
- Long-term daily maintenance dose
Why loading is optional
A loading phase of roughly 0.3 g per kg of bodyweight split across four daily doses saturates your muscle creatine stores in about a week. Skipping it and taking a flat maintenance dose from day one gets you to the same saturation point in three to four weeks — useful if stomach upset from higher single doses is a concern.
Maintenance dosing scales with size
The common blanket advice of '5 g a day' undersells larger athletes and slightly overshoots very light ones. Scaling to about 0.04 g per kg of bodyweight, with a 5 g floor, keeps smaller people from wasting money while giving heavier lifters enough to stay fully saturated.
Splitting doses reduces GI discomfort
During loading, four smaller doses spread through the day are absorbed more comfortably than one large 20 g dose, which can cause bloating or loose stools in some people. Maintenance doses are small enough to take in one sitting, ideally with a carbohydrate-containing meal to aid uptake.
Tub math and budgeting
A standard 300 g tub of creatine monohydrate contains 60 five-gram scoops. Once you know your daily grams for loading and maintenance, you can estimate exactly how many tubs you'll need per year and time your reorders instead of running out mid-cycle.
Reference creatine doses by bodyweight
| Bodyweight (kg) | Loading g/day | Maintenance g/day |
|---|---|---|
| 50 | 15.0 | 5.0 |
| 60 | 18.0 | 5.0 |
| 70 | 21.0 | 5.0 |
| 80 | 24.0 | 5.0 |
| 90 | 27.0 | 5.0 |
| 100 | 30.0 | 5.0 |
| 110 | 33.0 | 5.0 |
Frequently Asked Questions
Three worked examples
Same engine, three different starting points — useful if you want to see how sensitive the answer is before you type your own numbers in.
Example 1: body weight 58.5, weight unit "Kilograms (kg)"
On the lower / more conservative end. Your bodyweight of 58.5 kg suggests a loading dose of 17.6 g/day and a long-term maintenance dose of 5.0 g/day.
Example 2: body weight 75, weight unit "Kilograms (kg)"
A typical middle-of-the-road setup. Your bodyweight of 75.0 kg suggests a loading dose of 22.5 g/day and a long-term maintenance dose of 5.0 g/day.
Example 3: body weight 97.5, weight unit "Pounds (lbs)"
On the higher / more demanding end. Your bodyweight of 44.2 kg suggests a loading dose of 13.3 g/day and a long-term maintenance dose of 5.0 g/day.
Quick answers about the Creatine Dosage Calculator
What exactly does the Creatine Dosage Calculator work out?
Creatine monohydrate is one of the most researched sports supplements available, and dosing it correctly comes down to bodyweight, not fixed 5 g scoops marketed on tubs. You enter body weight, weight unit and protocol and the result panel updates straight away, so you can compare two or three versions of the same question in a few seconds.
What do I need before I start?
Only 3 fields: body weight, weight unit and protocol. Nothing else is needed and nothing is stored.
How is it calculated — why loading is optional?
A loading phase of roughly 0. The same maths runs inside this page, so hand-checking the result on paper gives you the identical figure.
Why do two calculators give me different answers for creatine Dosage?
The common blanket advice of '5 g a day' undersells larger athletes and slightly overshoots very light ones. Different sites pick different assumptions, so always check which method a calculator states before you trust the gap between two numbers.
What does the "Reference creatine doses by bodyweight" table on this page tell me?
It is the reference range this tool works against — 7 rows from "50" (15.0) up to "110" (33.0). Use it to sanity-check whether the number you just calculated sits where you expected it to.
Which weight unit should I pick?
The dropdown offers 2 choices — Kilograms (kg) and Pounds (lbs). Pick the one that matches your real situation rather than the one you would like to be true; weight unit usually moves the final figure more than any other single input, so it is worth running it twice with the option above and below your guess.
Does it work in both metric and imperial (or another currency)?
Yes. The "Weight unit" control converts every field and every result, so you never have to convert anything by hand before typing it in. Switch it after entering your numbers and the output re-renders instantly in the new system.
Do I have to press a button or reload the page to see the result?
No. Creatine Dosage Calculator runs completely inside your browser, so the moment you change a value the cards recalculate — there is no submit step, no page reload and no waiting for a server round trip. That also means it keeps working on a weak or intermittent mobile connection.
Is it free, and do you keep what I type?
It is free with no sign-up, no app install and no usage limit. Nothing you enter into Creatine Dosage Calculator leaves your device — the calculation is JavaScript running locally, so there is no upload of your figures to DrHint or anyone else.
Can I use it on a phone?
Yes — the layout stacks to a single column on small screens and the number fields open the numeric keypad on both Android and iOS. Many people bookmark this page or add it to their home screen and re-open it whenever the question comes up.
Anything to be careful about with the result?
No — loading only speeds up saturation from about four weeks to about one week. Treat the output as a well-grounded estimate for planning, not as a professional, legal or medical decision on its own.
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