Health Measurements
Creatinine Clearance Calculator
Creatinine Clearance Calculator estimate adult creatinine clearance with the original Cockcroft-Gault equation and sex factor.
Health Measurements
Creatinine Clearance Calculator
Estimate adult creatinine clearance with the original Cockcroft-Gault equation and sex factor.
Formula
CrCl = ((140-age)*weight_kg)/(72*serum creatinine mg/dL); multiply by 0.85 for female sex.
About the Creatinine Clearance Calculator
Estimate adult creatinine clearance with the original Cockcroft-Gault equation and sex factor.
How the Creatinine Clearance Calculator Works
Age, entered body weight, and serum creatinine are applied exactly as in the Cockcroft-Gault estimate, with the published female factor shown separately.
Formula
CrCl = ((140-age)*weight_kg)/(72*serum creatinine mg/dL); multiply by 0.85 for female sex.
The calculation runs in your browser. Values are validated for required ranges, compatible units, and method-specific restrictions before results are displayed.
Required Inputs
- Age (required) - enter in years.
- Body weight (required) - enter in kg.
- Serum creatinine (required) - enter in mg/dL.
- Sex factor used by equation (required).
Results Reported
The result panel reports the final answer and the intermediate quantities needed to check the calculation:
- Base Cockcroft-Gault estimate (mL/min)
- Sex factor
- Estimated creatinine clearance (mL/min)
Creatinine Clearance Calculator Example
Select Example Data in the calculator to load this reproducible input set:
| Input | Example value |
|---|---|
| Age | 65 years |
| Body weight | 70 kg |
| Serum creatinine | 1.2 mg/dL |
| Sex factor used by equation | male |
How to Use the Calculator
- Confirm that the calculator title and formula match the quantity you need.
- Enter every required value using the unit shown with its field.
- Select Example Data to inspect a valid input set, or enter your own values and select Calculate.
- Review all reported values and the displayed formula before using the answer.
- Use Copy Result or Download CSV when you need a reusable record.
Accuracy and Limitations
This estimate has important limitations for unusual body size, unstable kidney function, pregnancy, low muscle mass, and drug dosing. A clinician must select the appropriate weight and interpretation.
Keep units consistent, use measurements that represent the actual situation, retain full precision during the calculation, and round only the final answer. Professional decisions may require current official rules, field measurements, laboratory methods, or specialist review.
Formula References
Frequently Asked Questions
What does the Creatinine Clearance Calculator calculate?
Estimate adult creatinine clearance with the original Cockcroft-Gault equation and sex factor.
Which formula does the Creatinine Clearance Calculator use?
CrCl = ((140-age)*weight_kg)/(72*serum creatinine mg/dL); multiply by 0.85 for female sex.
What should I verify before using this result?
This estimate has important limitations for unusual body size, unstable kidney function, pregnancy, low muscle mass, and drug dosing. A clinician must select the appropriate weight and interpretation.