Medically reviewed by Dr. Taimoor Asghar, MBBS Last updated: April 11, 2025

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Understanding Your Results

The Holliday-Segar method (4-2-1 rule): 0–10 kg = 100 mL/kg/day; 10–20 kg = 1000 mL + 50 mL/kg for each kg >10; >20 kg = 1500 mL + 20 mL/kg for each kg >20.

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Medical Disclaimer: This calculator is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalized guidance.

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Frequently Asked Questions

What is this calculator used for?

This calculator helps estimate clinical values, risks, or dosing based on validated formulas and guidelines.

How accurate are the results?

Results are estimates and should always be confirmed with clinical judgment and appropriate testing.

Can I use this for pediatric patients?

Follow the specific calculator instructions. Some tools are pediatric-specific, while others are for adults only.

When should I contact a doctor?

Always consult a healthcare provider for abnormal results, worsening symptoms, or if you are unsure about next steps.

Maintenance Fluid Calculator (Holliday-Segar)