Creatinine Clearance Calculator
Fill in the values and the answer updates as you type.
How the Creatinine Clearance Calculator works
Cockcroft-Gault: (140 − age) × weight ÷ (72 × serum creatinine), multiplied by 0.85 for women. It is an estimate only. Lab results and medication dosing must be interpreted by a doctor. Example: with the default values, estimated clearance (ml/min) comes to 92.4.
Inputs and results
The Creatinine Clearance Calculator takes 4 inputs and gives 2 results.
What you enter
- Age (years) — starts at 45.
- Body weight (kg) — starts at 70.
- Serum creatinine (mg/dL) — starts at 1.
- Sex — starts at Male. Choose from: Male and Female.
What you get
- Estimated clearance (mL/min)
- Reading
Example: Creatinine Clearance Calculator with the starting values
With age 45 years, body weight 70 kg, serum creatinine 1 mg/dL and sex Male, the calculator returns:
| Estimated clearance (mL/min) | 92.4 |
|---|---|
| Reading | 90 or above: normal range |
Change any value above and the results update straight away.
Creatinine Clearance Calculator FAQ
How do I use the Creatinine Clearance Calculator?
Enter age, body weight, serum creatinine and sex in the fields, then read estimated clearance (ml/min) and reading in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Creatinine Clearance Calculator calculate?
Estimate kidney function using the Cockcroft-Gault formula. It returns estimated clearance (ml/min) and reading from the 4 values you provide.
What values does the Creatinine Clearance Calculator start with?
It opens with age 45 years, body weight 70 kg, serum creatinine 1 mg/dL and sex Male so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Creatinine Clearance Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Creatinine Clearance Calculator for medical or health decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm medical or health decisions with a qualified professional. See the Disclaimer for more.