Maintenance Fluid (children)

1-10 kg: 100 mL/kg/d
11-20 kg: 1000 mL + 50 mL/kg above 10 kg/d
21-30 kg: 1500 mL + 20 mL/kg above 20 kg/d
> 30 kg: 1700 mL + 10 mL/kg above 30 kg/d

2400mL daily maximum

References:
Holiday MA. Pediatrics. 1957 May;19(5):823-32. -> PubMed