Creatinine Clearance Calculator (Cockcroft-Gault)

Calculate your creatinine clearance using the Cockcroft-Gault formula. Accurate and easy-to-use tool for medical professionals and patients.

Full original guide (expanded)

Creatinine Clearance Calculator (Cockcroft-Gault)

Estimate creatinine clearance with the Cockcroft-Gault formula to support renal dosing and kidney function checks.

Calculator

Gender

Results

Creatinine Clearance: --

Source of Data and Methodology

This calculator uses the Cockcroft-Gault formula, which is widely recognized in clinical practice for estimating creatinine clearance. Read more about the formula. All calculations are based on this trusted source.

The Formula Explained

\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]

Where the factor is 1.23 for males and 1.04 for females.

Glossary of Variables

  • Age: The age of the individual in years.
  • Weight: The weight of the individual in kilograms (kg).
  • Serum Creatinine: The concentration of creatinine in the blood, measured in milligrams per deciliter (mg/dL).
  • Gender: Biological sex which affects the formula factor.

How It Works: A Step-by-Step Example

Consider a 65-year-old male weighing 70 kg with a serum creatinine level of 1.0 mg/dL. Using the Cockcroft-Gault formula, his creatinine clearance is calculated as follows:

\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]

Frequently Asked Questions (FAQ)

What is creatinine clearance?
Creatinine clearance is a measure of kidney function, indicating how well kidneys are filtering creatinine from the blood.
Why is gender important in the calculation?
Gender affects muscle mass and consequently the production of creatinine, requiring different factors in the formula.
Is this calculator accurate for children?
This calculator is not suitable for children; other formulas should be used for pediatric patients.
Can I use this tool if I have renal impairment?
Yes, but it's always advised to consult a healthcare professional for personalized assessments.
How often should I check my creatinine clearance?
This depends on your health condition; consult your doctor for a tailored advice.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]
\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]
\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}
Formula (extracted text)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\] Where the factor is 1.23 for males and 1.04 for females.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Creatinine Clearance Calculator (Cockcroft-Gault)

Estimate creatinine clearance with the Cockcroft-Gault formula to support renal dosing and kidney function checks.

Calculator

Gender

Results

Creatinine Clearance: --

Source of Data and Methodology

This calculator uses the Cockcroft-Gault formula, which is widely recognized in clinical practice for estimating creatinine clearance. Read more about the formula. All calculations are based on this trusted source.

The Formula Explained

\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]

Where the factor is 1.23 for males and 1.04 for females.

Glossary of Variables

  • Age: The age of the individual in years.
  • Weight: The weight of the individual in kilograms (kg).
  • Serum Creatinine: The concentration of creatinine in the blood, measured in milligrams per deciliter (mg/dL).
  • Gender: Biological sex which affects the formula factor.

How It Works: A Step-by-Step Example

Consider a 65-year-old male weighing 70 kg with a serum creatinine level of 1.0 mg/dL. Using the Cockcroft-Gault formula, his creatinine clearance is calculated as follows:

\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]

Frequently Asked Questions (FAQ)

What is creatinine clearance?
Creatinine clearance is a measure of kidney function, indicating how well kidneys are filtering creatinine from the blood.
Why is gender important in the calculation?
Gender affects muscle mass and consequently the production of creatinine, requiring different factors in the formula.
Is this calculator accurate for children?
This calculator is not suitable for children; other formulas should be used for pediatric patients.
Can I use this tool if I have renal impairment?
Yes, but it's always advised to consult a healthcare professional for personalized assessments.
How often should I check my creatinine clearance?
This depends on your health condition; consult your doctor for a tailored advice.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]
\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]
\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}
Formula (extracted text)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\] Where the factor is 1.23 for males and 1.04 for females.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Creatinine Clearance Calculator (Cockcroft-Gault)

Estimate creatinine clearance with the Cockcroft-Gault formula to support renal dosing and kidney function checks.

Calculator

Gender

Results

Creatinine Clearance: --

Source of Data and Methodology

This calculator uses the Cockcroft-Gault formula, which is widely recognized in clinical practice for estimating creatinine clearance. Read more about the formula. All calculations are based on this trusted source.

The Formula Explained

\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]

Where the factor is 1.23 for males and 1.04 for females.

Glossary of Variables

  • Age: The age of the individual in years.
  • Weight: The weight of the individual in kilograms (kg).
  • Serum Creatinine: The concentration of creatinine in the blood, measured in milligrams per deciliter (mg/dL).
  • Gender: Biological sex which affects the formula factor.

How It Works: A Step-by-Step Example

Consider a 65-year-old male weighing 70 kg with a serum creatinine level of 1.0 mg/dL. Using the Cockcroft-Gault formula, his creatinine clearance is calculated as follows:

\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]

Frequently Asked Questions (FAQ)

What is creatinine clearance?
Creatinine clearance is a measure of kidney function, indicating how well kidneys are filtering creatinine from the blood.
Why is gender important in the calculation?
Gender affects muscle mass and consequently the production of creatinine, requiring different factors in the formula.
Is this calculator accurate for children?
This calculator is not suitable for children; other formulas should be used for pediatric patients.
Can I use this tool if I have renal impairment?
Yes, but it's always advised to consult a healthcare professional for personalized assessments.
How often should I check my creatinine clearance?
This depends on your health condition; consult your doctor for a tailored advice.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\]
\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}
Formula (extracted LaTeX)
\[\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}\]
\text{Creatinine Clearance} = \frac{(140 - 65) \times 70 \times 1.23}{1.0} = 85.05 \, \text{mL/min}
Formula (extracted text)
\[\text{Creatinine Clearance} = \frac{(140 - \text{age}) \times \text{weight} \times \text{factor}}{\text{serum creatinine}}\] Where the factor is 1.23 for males and 1.04 for females.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).