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Kidney estimate

Creatinine Clearance Calculator

Estimate creatinine clearance with a Cockcroft-Gault style calculation using age, sex, weight, and serum creatinine.

Interactive calculator

Estimate creatinine clearance

Use age, sex, body weight, and serum creatinine to estimate creatinine clearance with the Cockcroft-Gault equation. This is a medication-dosing reference estimate and not a diagnosis.

Results

Creatinine clearance

112.5 mL/min

Interpretation

Normal or near-normal filtration estimate

How to use it

  1. 01Enter age, sex, body weight, and serum creatinine in mg/dL.
  2. 02Review the estimated creatinine clearance and the broad filtration band shown alongside it.
  3. 03Use the result as a support estimate when discussing medicines or kidney trends with a clinician.

Result guide

  • Different renal equations can produce different values, so this page should not be treated as a full kidney-disease diagnosis tool.
  • Drug dosing decisions may depend on the specific equation requested in the prescribing guidance.
  • Rapid illness, unusual muscle mass, and fluid shifts can make creatinine-based estimates less reliable.

About this calculator

Creatinine clearance tools are often used when checking kidney-related dose adjustments or screening renal function trends. That makes scope clarity important: this page is an estimate, not a full eGFR or nephrology workup.

Using age, weight, sex, and serum creatinine makes the result useful for planning conversations where Cockcroft-Gault style dosing guidance is still referenced.

Frequently asked questions

Is this the same as eGFR?

No. This page uses a creatinine-clearance style estimate, while lab-reported eGFR may use a different equation and different interpretation bands.

Should medication changes be made from this page alone?

No. Dosing and kidney-care decisions should follow clinician guidance, current labs, and the specific medicine reference being used.

DE
Per WHO guidelines / Peer-reviewed researchFormula version: 2026

Reviewed by Dr. Elena Rostova, MD, PhD

Medical Doctor & Clinical Nutrition Researcher

Reviews health index calculators, unit converter benchmarks, and mathematical models against WHO guidelines and peer-reviewed research.

Formula last verified: June 2026

Sources: Per WHO guidelines / Peer-reviewed research/WHO BMI classification guidance/Published TDEE and basal metabolic rate formula references

Disclaimer: Calculator results are for general reference and educational purposes only per WHO standards. Health indexes and mathematical models are not a substitute for professional medical diagnosis, clinical nutrition, or certified trade advice.

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