💪 Creatine Calculator: Loading and Maintenance Dose by Body Weight
By Shihab Mia · Updated 2026-07-04
This creatine calculator gives a general estimate of doses based on body weight. It is not medical advice and does not replace guidance from a doctor, pharmacist or registered dietitian. Creatine is not suitable for everyone: people with kidney disease or reduced kidney function, those who are pregnant or breastfeeding, teenagers, and anyone taking medication should get professional advice first. Drink enough water, choose a reputable creatine monohydrate product (ideally third-party tested), and follow the label. If you feel unwell, stop and consult a qualified health professional.
A general estimate based on body weight, not medical advice. Creatine monohydrate is the form these figures assume. Drink plenty of water and check with a doctor or dietitian before starting.
This creatine calculator tells you how much creatine monohydrate to take based on your body weight. In short: your loading dose is about 0.3 grams per kilogram per day (split into four servings) for 5 to 7 days, and your maintenance dose is about 0.03 grams per kilogram per day, which for most adults is the familiar 3 to 5 grams. Enter your weight in kilograms or pounds and choose loading then maintenance, or maintenance only, to see your exact grams per day.
What is the Creatine Dosage Calculator?
Creatine is one of the most researched sports supplements in the world, and dosing it correctly is simple once you scale the amount to your body size. This creatine calculator uses the two dosing figures that appear across the scientific literature and every major creatine calculator: roughly 0.3 grams per kilogram of body weight per day during a loading phase, and roughly 0.03 grams per kilogram per day for ongoing maintenance. Bigger bodies hold more skeletal muscle and therefore more total creatine, which is why a fixed one-size scoop under-doses heavier people and over-doses lighter ones.
The first approach is a loading phase. You take the larger amount, about 0.3 grams per kilogram per day, split into four roughly equal servings, for 5 to 7 days. For most adults this lands in the well-known 20 to 25 grams per day range. Loading rapidly fills, or saturates, the muscle's creatine stores, usually within about a week, so any performance benefit from the extra phosphocreatine arrives sooner. After the loading week you drop down to maintenance.
The second approach skips loading entirely and simply takes a steady maintenance dose every day. Maintenance is about 0.03 grams per kilogram per day, which for most people is the classic 3 to 5 grams a day. Without a loading phase your muscles still reach exactly the same saturation point, it just takes around three to four weeks instead of one. Both routes end in the same place, so the choice comes down to whether you want the benefit faster (load) or prefer smaller, gentler daily amounts and do not mind waiting a month (maintenance only).
A few practical points matter more than the exact decimal your creatine calculator produces. Creatine monohydrate is the form these figures assume: it is the cheapest, most studied and best-evidenced type, and micronized monohydrate is simply the same molecule ground finer so it mixes more easily. Pricier hydrochloride, buffered or liquid versions have not been shown to beat plain monohydrate. Timing is not critical, so take it whenever is convenient, though many people take it after training alongside a carbohydrate or protein meal. Take it every day, including rest days, because the benefit comes from keeping muscle stores topped up, not from any single dose near a workout.
A couple of things people worry about are worth clearing up. Creatine draws a small amount of water into your muscle cells, so the scale can rise by roughly 1 to 2 kilograms in the first week or two. That is intramuscular water, not fat and not bloat under the skin, and it is a normal, expected part of how creatine works. You also do not need to cycle creatine on and off; there is no evidence your body stops making its own creatine permanently, and continuous daily use is the standard, well-tolerated protocol. Vegetarians and vegans often start with lower muscle creatine because they get none from meat or fish, so they frequently notice a larger effect.
When to use it
- Working out a loading-phase dose split into four daily servings when you want muscle creatine saturated within about a week.
- Finding a personalised daily maintenance dose instead of guessing with the generic 5 g scoop.
- Deciding whether to load or just take a steady dose, by comparing the two phases side by side.
- Scaling the dose sensibly for a lighter or heavier body weight rather than using one fixed number for everyone.
- Planning how much creatine you will get through in a loading week so you can budget a tub before you start.
- Setting a sensible dose for cognitive or general-health use, where a steady maintenance amount is the usual choice.
How to use the Creatine Dosage Calculator
- Pick Metric (kg) or Imperial (lb) and enter your body weight.
- Choose loading then maintenance, or maintenance only if you prefer to skip the loading week.
- Read your daily loading dose, the per-serving amount (taken four times a day), and the loading-week total.
- Note your ongoing daily maintenance dose, which you continue every day for as long as you supplement.
- Round to whatever is convenient with your scoop or scale (a flat 3 to 5 g for maintenance is fine for most adults).
Formula & method
Worked examples
A 70 kg adult choosing a loading phase then maintenance.
- Loading per day = 70 kg x 0.3 = 21 g
- Per serving = 21 / 4 = 5.3 g, taken four times a day
- Loading total over 5 days = 21 x 5 = 105 g
- Maintenance per day = 70 kg x 0.03 = 2.1 g, usually rounded up to a flat 3 g
Result: Load 21 g/day (5.3 g x4) for 5 to 7 days, then about 3 g/day to maintain
An 80 kg adult who wants maintenance only, no loading.
- Skip the loading phase entirely
- Maintenance per day = 80 kg x 0.03 = 2.4 g
- Most people take a convenient flat 3 to 5 g per day
- Muscle stores fill over about 3 to 4 weeks instead of 1 week
Result: About 2.4 g/day (or a flat 3 to 5 g), reaching full saturation in roughly a month
A 200 lb (about 91 kg) adult who thinks in pounds and wants to load.
- Convert weight: 200 / 2.2046 = 90.7 kg
- Loading per day = 90.7 x 0.3 = 27.2 g, round to about 27 g
- Per serving = 27 / 4 = 6.8 g, taken four times a day
- Maintenance per day = 90.7 x 0.03 = 2.7 g, usually a flat 3 to 5 g
Result: Load about 27 g/day (6.8 g x4) for a week, then 3 to 5 g/day to maintain
Creatine doses by body weight (loading 0.3 g/kg, maintenance 0.03 g/kg)
| Body weight | Loading per day | Per serving (x4) | Maintenance per day |
|---|---|---|---|
| 50 kg (110 lb) | 15 g | 3.8 g | 1.5 g (round to 3 g) |
| 60 kg (132 lb) | 18 g | 4.5 g | 1.8 g (round to 3 g) |
| 70 kg (154 lb) | 21 g | 5.3 g | 2.1 g (round to 3 g) |
| 80 kg (176 lb) | 24 g | 6.0 g | 2.4 g (round to 3 g) |
| 90 kg (198 lb) | 27 g | 6.8 g | 2.7 g (round to 3 g) |
| 100 kg (220 lb) | 30 g | 7.5 g | 3.0 g (round to 5 g) |
Loading versus no-loading: how the two approaches compare
| Approach | Daily amount | Time to full muscle saturation |
|---|---|---|
| Loading then maintenance | ~0.3 g/kg for 5 to 7 days, then ~0.03 g/kg | About 1 week |
| Maintenance only | ~0.03 g/kg (commonly 3 to 5 g) from day one | About 3 to 4 weeks |
Creatine monohydrate forms: what actually differs
| Form | What it is | Worth paying more? |
|---|---|---|
| Standard monohydrate | The most studied, best-evidenced powder | This is the benchmark |
| Micronized monohydrate | Same molecule ground finer, mixes more easily | Small convenience gain, fine to buy |
| HCl, buffered, liquid, "advanced" | Alternative forms marketed as superior | No proven advantage over monohydrate |
Common mistakes to avoid
- Taking the whole loading dose in one go. Loading is about 0.3 g/kg per day, but it should be split into four servings across the day. A single large dose is more likely to cause bloating, cramping or an upset stomach, and offers no extra benefit.
- Thinking loading is mandatory. Loading only speeds things up. A steady maintenance dose reaches the same muscle saturation in three to four weeks. If the higher loading amounts bother your stomach, skipping straight to maintenance is perfectly fine.
- Stopping after the loading week. The loading phase fills your stores, but they slowly fall again if you stop. You need the ongoing daily maintenance dose to keep the benefit, so creatine is a daily habit, not a one-week course.
- Skipping creatine on rest days. The goal is to keep muscle stores saturated, not to hit a workout. Take your maintenance dose every day, including rest days. Timing around exercise barely matters compared with taking it consistently.
- Panicking about the scale going up. A rise of 1 to 2 kg in the first week or two is intramuscular water, a normal part of how creatine works, not fat gain and not puffy under-the-skin bloat. It is expected and not a reason to stop.
- Paying extra for "advanced" forms. Creatine monohydrate is the cheapest, most researched and most reliable form. Hydrochloride, buffered and liquid versions rarely outperform it. These dose figures assume plain (or micronized) monohydrate.
Glossary
- Creatine monohydrate
- The standard, best-studied and most cost-effective form of creatine, which these dose figures assume.
- Micronized creatine
- Creatine monohydrate ground into smaller particles so it dissolves and mixes more easily. Chemically identical to standard monohydrate.
- Loading phase
- A short period (5 to 7 days) of taking a larger daily amount, about 0.3 g/kg, to fill muscle creatine stores quickly.
- Maintenance dose
- The smaller ongoing daily amount, about 0.03 g/kg (commonly 3 to 5 g), that keeps muscle stores topped up.
- Saturation
- The point at which your muscles hold about as much creatine as they can; further dosing simply maintains this level.
- Phosphocreatine
- The stored form of creatine in muscle that rapidly regenerates ATP, the short-term energy currency of your cells, during hard efforts.
- Serving
- One portion of the daily dose. During loading the day is split into four servings to reduce stomach upset.
- Cycling
- Deliberately taking a supplement then stopping on a schedule. Creatine does not need cycling; continuous daily use is standard.
Frequently asked questions
How much creatine should I take per day?
For maintenance, take about 0.03 grams per kilogram of body weight, which for most adults is the familiar 3 to 5 grams a day. If you load first, take roughly 0.3 grams per kilogram per day (about 20 to 25 g for most people) split into four servings for 5 to 7 days, then drop to the maintenance amount.
Do I need a loading phase?
No, loading is optional. It saturates your muscles in about a week instead of three to four, so it just brings the benefit forward. Taking a steady 3 to 5 g maintenance dose from the start reaches the same end point with smaller, gentler daily amounts.
How do I split the loading dose?
Divide the daily loading amount into four roughly equal servings spread across the day, for example with meals. Splitting it this way reduces the bloating or stomach upset that a single large dose can cause, and there is no benefit to taking it all at once.
When is the best time to take creatine?
Timing is not critical. Consistency matters far more than when you take it, because the benefit comes from keeping muscle stores topped up over time. Many people take it after training with a meal, but any time of day works as long as you do not skip days.
Should I take creatine on rest days?
Yes. On non-training days, take your normal maintenance dose (about 3 to 5 g). The aim is to keep muscle creatine stores saturated every day, which is unrelated to whether you exercised, so daily consistency beats timing it around workouts.
Will creatine make me gain weight?
You may see the scale rise by about 1 to 2 kg in the first week or two. That is water drawn into your muscle cells, not fat and not under-the-skin bloat. It is a normal, expected part of how creatine works and often accompanies gains in strength and muscle size over time.
Is creatine safe?
For healthy adults, creatine monohydrate is one of the most studied supplements and is generally considered safe at these doses. It is not right for everyone, though. If you have kidney problems or reduced kidney function, are pregnant or breastfeeding, are a teenager, or take medication, check with a doctor or dietitian first.
Do I need to cycle creatine on and off?
No. There is no good evidence that you need to cycle creatine or that continuous use stops your body making its own. Standard practice is to take it every day for as long as you want the benefit. If you stop, muscle stores simply drift back to baseline over several weeks.
Should I drink more water with creatine?
It is sensible to stay well hydrated, especially during the higher-dose loading phase, since creatine draws a little extra water into your muscles. Plenty of water also helps reduce any stomach discomfort. Follow normal hydration advice and the product label.
Which type of creatine is best?
Creatine monohydrate, standard or micronized, is the best choice for almost everyone. It is the cheapest and by far the most researched form, and pricier hydrochloride, buffered or liquid versions have not been shown to work better. Look for a third-party tested monohydrate product.
Sources
- International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine , Journal of the International Society of Sports Nutrition (2017)
- Creatine , Mayo Clinic (2023)
- Creatine supplementation with specific view to exercise/sports performance: an update , Journal of the International Society of Sports Nutrition (2012)