Creatine Dosage Calculator
Use this creatine dosage calculator to calculate your loading and daily maintenance dose based on your body weight.
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Alexandra Krause, MS, RDN
Alexandra Krause, MS, RDN, is a Registered Dietitian and Certified Personal Trainer specializing in sports nutrition and weight management.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Creatine Dosage Is Calculated
Creatine is one of the most-studied supplements in sports nutrition, and unlike most supplements, it’s dosed almost like a drug protocol: a specific amount to saturate your muscle stores, followed by a lower amount to keep them there. This calculator runs both stages directly from your body weight.
What This Calculator Measures
This gives you two numbers: a loading dose for the first 5 to 7 days, and a maintenance dose to take indefinitely afterward. The loading phase is optional, not required, to reach full muscle saturation.
The Formula
During loading, we use approximately 0.3 g per kg of body weight per day, split into 4 equal doses to reduce digestive discomfort¹.
Loading dose (g/day) = Weight (kg) × 0.3, split into 4 doses
For maintenance, whether after loading or as your only phase, we use 0.03 to 0.05 g per kg of body weight per day, which lands in the commonly cited 3 to 5 g/day range for people in the roughly 100 to 165 kg bodyweight range¹. We show both the flat ISSN range and your weight-adjusted number side by side.
Maintenance dose (g/day) = Weight (kg) × 0.03 to 0.05
How This Calculator Computes Your Result
Enter your body weight and choose loading phase or maintenance only. We convert your weight to kilograms if needed, apply the formulas above, and also convert both results to an approximate teaspoon measurement, since most people scoop creatine rather than weighing it.
Why Loading Is Optional
The original research establishing this protocol found that 20 g/day for 6 days raised muscle creatine content by about 20%, the same increase eventually reached by taking 3 g/day alone, just over roughly 28 days instead of less than a week². Loading gets you there faster; skipping it gets you to the same place.
A Note on Accuracy
These doses are based on published research for creatine monohydrate specifically. Other forms (HCl, buffered, etc.) do not have the same evidentiary support, and this dosing math should not be assumed to apply to them. Anyone with existing kidney disease should consult a doctor before supplementing.
Frequently Asked Questions
Do I need to do a loading phase?
No. A loading phase saturates your muscle creatine stores faster, about 5 to 7 days versus roughly 3 to 4 weeks, but it isn't required². Skipping straight to a daily maintenance dose reaches the same saturation point, just more gradually, with no difference in the final amount of creatine stored in your muscles.
Why is the loading dose split into multiple servings?
Splitting the daily loading dose into 4 smaller servings throughout the day helps minimize digestive discomfort, like bloating or stomach upset, that can happen when taking a large amount of creatine all at once. Once you move to the lower maintenance dose, splitting isn't necessary for most people.
Does this dosing apply to creatine HCl or other forms?
No. Creatine monohydrate is the form with the strongest and most extensive research support, and it's what this dosing is based on¹. Other forms, like creatine HCl or buffered creatine, are marketed with different dosing claims not backed by the same body of evidence.
Is creatine safe and effective for long-term use, including for older adults?
For healthy adults, research supports long-term daily use at maintenance doses, including in adults over 50, where the same standard dose still builds muscle and strength with resistance training¹,³,⁴. Anyone with existing kidney disease should talk to a doctor before starting, since creatine increases creatinine levels through normal muscle metabolism.
Sources
International Society of Sports Nutrition Position Stand: Safety and Efficacy of Creatine Supplementation in Exercise, Sport, and Medicine, Kreider et al., 2017
Muscle Creatine Loading in Men, Hultman et al., 1996
Influence of Age, Sex, and Type of Exercise on the Efficacy of Creatine Supplementation on Lean Body Mass: A Systematic Review and Meta-Analysis of Randomized Clinical Trials, Delpino et al., 2022
Effect of Creatine Supplementation During Resistance Training on Lean Tissue Mass and Muscular Strength in Older Adults: A Meta-Analysis, Chilibeck et al., 2017
Creatine Dosage Calculator
Use this creatine dosage calculator to calculate your loading and daily maintenance dose based on your body weight.
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Alexandra Krause, MS, RDN
Alexandra Krause, MS, RDN, is a Registered Dietitian and Certified Personal Trainer specializing in sports nutrition and weight management.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Creatine Dosage Is Calculated
Creatine is one of the most-studied supplements in sports nutrition, and unlike most supplements, it’s dosed almost like a drug protocol: a specific amount to saturate your muscle stores, followed by a lower amount to keep them there. This calculator runs both stages directly from your body weight.
What This Calculator Measures
This gives you two numbers: a loading dose for the first 5 to 7 days, and a maintenance dose to take indefinitely afterward. The loading phase is optional, not required, to reach full muscle saturation.
The Formula
During loading, we use approximately 0.3 g per kg of body weight per day, split into 4 equal doses to reduce digestive discomfort¹.
Loading dose (g/day) = Weight (kg) × 0.3, split into 4 doses
For maintenance, whether after loading or as your only phase, we use 0.03 to 0.05 g per kg of body weight per day, which lands in the commonly cited 3 to 5 g/day range for people in the roughly 100 to 165 kg bodyweight range¹. We show both the flat ISSN range and your weight-adjusted number side by side.
Maintenance dose (g/day) = Weight (kg) × 0.03 to 0.05
How This Calculator Computes Your Result
Enter your body weight and choose loading phase or maintenance only. We convert your weight to kilograms if needed, apply the formulas above, and also convert both results to an approximate teaspoon measurement, since most people scoop creatine rather than weighing it.
Why Loading Is Optional
The original research establishing this protocol found that 20 g/day for 6 days raised muscle creatine content by about 20%, the same increase eventually reached by taking 3 g/day alone, just over roughly 28 days instead of less than a week². Loading gets you there faster; skipping it gets you to the same place.
A Note on Accuracy
These doses are based on published research for creatine monohydrate specifically. Other forms (HCl, buffered, etc.) do not have the same evidentiary support, and this dosing math should not be assumed to apply to them. Anyone with existing kidney disease should consult a doctor before supplementing.
Frequently Asked Questions
Do I need to do a loading phase?
No. A loading phase saturates your muscle creatine stores faster, about 5 to 7 days versus roughly 3 to 4 weeks, but it isn't required². Skipping straight to a daily maintenance dose reaches the same saturation point, just more gradually, with no difference in the final amount of creatine stored in your muscles.
Why is the loading dose split into multiple servings?
Splitting the daily loading dose into 4 smaller servings throughout the day helps minimize digestive discomfort, like bloating or stomach upset, that can happen when taking a large amount of creatine all at once. Once you move to the lower maintenance dose, splitting isn't necessary for most people.
Does this dosing apply to creatine HCl or other forms?
No. Creatine monohydrate is the form with the strongest and most extensive research support, and it's what this dosing is based on¹. Other forms, like creatine HCl or buffered creatine, are marketed with different dosing claims not backed by the same body of evidence.
Is creatine safe and effective for long-term use, including for older adults?
For healthy adults, research supports long-term daily use at maintenance doses, including in adults over 50, where the same standard dose still builds muscle and strength with resistance training¹,³,⁴. Anyone with existing kidney disease should talk to a doctor before starting, since creatine increases creatinine levels through normal muscle metabolism.
Sources
International Society of Sports Nutrition Position Stand: Safety and Efficacy of Creatine Supplementation in Exercise, Sport, and Medicine, Kreider et al., 2017
Muscle Creatine Loading in Men, Hultman et al., 1996
Influence of Age, Sex, and Type of Exercise on the Efficacy of Creatine Supplementation on Lean Body Mass: A Systematic Review and Meta-Analysis of Randomized Clinical Trials, Delpino et al., 2022
Effect of Creatine Supplementation During Resistance Training on Lean Tissue Mass and Muscular Strength in Older Adults: A Meta-Analysis, Chilibeck et al., 2017
Creatine Dosage Calculator
Use this creatine dosage calculator to calculate your loading and daily maintenance dose based on your body weight.
Calculated instantly in your browser — nothing is sent to or stored on our servers.
Alexandra Krause, MS, RDN
Alexandra Krause, MS, RDN, is a Registered Dietitian and Certified Personal Trainer specializing in sports nutrition and weight management.
Medical Disclaimer: This calculator provides a general estimate based on established research and is for educational purposes only, not a substitute for medical advice. Individual results can vary based on health conditions, so consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, exercise, or health routine. Read our full Medical Disclaimer.
How Creatine Dosage Is Calculated
Creatine is one of the most-studied supplements in sports nutrition, and unlike most supplements, it’s dosed almost like a drug protocol: a specific amount to saturate your muscle stores, followed by a lower amount to keep them there. This calculator runs both stages directly from your body weight.
What This Calculator Measures
This gives you two numbers: a loading dose for the first 5 to 7 days, and a maintenance dose to take indefinitely afterward. The loading phase is optional, not required, to reach full muscle saturation.
The Formula
During loading, we use approximately 0.3 g per kg of body weight per day, split into 4 equal doses to reduce digestive discomfort¹.
Loading dose (g/day) = Weight (kg) × 0.3, split into 4 doses
For maintenance, whether after loading or as your only phase, we use 0.03 to 0.05 g per kg of body weight per day, which lands in the commonly cited 3 to 5 g/day range for people in the roughly 100 to 165 kg bodyweight range¹. We show both the flat ISSN range and your weight-adjusted number side by side.
Maintenance dose (g/day) = Weight (kg) × 0.03 to 0.05
How This Calculator Computes Your Result
Enter your body weight and choose loading phase or maintenance only. We convert your weight to kilograms if needed, apply the formulas above, and also convert both results to an approximate teaspoon measurement, since most people scoop creatine rather than weighing it.
Why Loading Is Optional
The original research establishing this protocol found that 20 g/day for 6 days raised muscle creatine content by about 20%, the same increase eventually reached by taking 3 g/day alone, just over roughly 28 days instead of less than a week². Loading gets you there faster; skipping it gets you to the same place.
A Note on Accuracy
These doses are based on published research for creatine monohydrate specifically. Other forms (HCl, buffered, etc.) do not have the same evidentiary support, and this dosing math should not be assumed to apply to them. Anyone with existing kidney disease should consult a doctor before supplementing.
Frequently Asked Questions
Do I need to do a loading phase?
No. A loading phase saturates your muscle creatine stores faster, about 5 to 7 days versus roughly 3 to 4 weeks, but it isn't required². Skipping straight to a daily maintenance dose reaches the same saturation point, just more gradually, with no difference in the final amount of creatine stored in your muscles.
Why is the loading dose split into multiple servings?
Splitting the daily loading dose into 4 smaller servings throughout the day helps minimize digestive discomfort, like bloating or stomach upset, that can happen when taking a large amount of creatine all at once. Once you move to the lower maintenance dose, splitting isn't necessary for most people.
Does this dosing apply to creatine HCl or other forms?
No. Creatine monohydrate is the form with the strongest and most extensive research support, and it's what this dosing is based on¹. Other forms, like creatine HCl or buffered creatine, are marketed with different dosing claims not backed by the same body of evidence.
Is creatine safe and effective for long-term use, including for older adults?
For healthy adults, research supports long-term daily use at maintenance doses, including in adults over 50, where the same standard dose still builds muscle and strength with resistance training¹,³,⁴. Anyone with existing kidney disease should talk to a doctor before starting, since creatine increases creatinine levels through normal muscle metabolism.
Sources
International Society of Sports Nutrition Position Stand: Safety and Efficacy of Creatine Supplementation in Exercise, Sport, and Medicine, Kreider et al., 2017
Muscle Creatine Loading in Men, Hultman et al., 1996
Influence of Age, Sex, and Type of Exercise on the Efficacy of Creatine Supplementation on Lean Body Mass: A Systematic Review and Meta-Analysis of Randomized Clinical Trials, Delpino et al., 2022
Effect of Creatine Supplementation During Resistance Training on Lean Tissue Mass and Muscular Strength in Older Adults: A Meta-Analysis, Chilibeck et al., 2017