Pediatric Fluid Calculator
Calculate maintenance IV fluid rates using the Holliday-Segar formula based on body weight.
Inputs
kg
Results
Hourly Rate
52.1 mL/hr
Daily Volume
1,250 mL/day
First 10 kg Contribution1,000 mL
Next 10 kg Contribution250 mL
Above 20 kg Contribution0 mL
How to Use This Calculator
- Enter the patient's Weight in kg — use actual body weight for maintenance fluid calculations.
- The Holliday-Segar formula applies 100 mL/kg/day for the first 10 kg, 50 mL/kg/day for the next 10 kg, and 20 mL/kg/day for weight above 20 kg.
- Review the Hourly Rate in mL/hr and Daily Volume in mL/day.
- The pie chart shows the weight-band contributions (first 10 kg, next 10 kg, above 20 kg) to understand the calculation.
- Note that this calculates standard maintenance fluids only — adjust for fever, losses, or clinical status as directed by your clinical team.
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