OpiCalc

989 Clinical Tools

APLS Drug Dosing Ballard Score Holiday-Segar Pediatric GCS Weight Estimation

OpiCalc

Open-access clinical infrastructure. Built to the standard every clinician deserves — fast, private, and free.

Zero data stored

Always free

Our mission & transparency

Get in Touch

Tool request, clinical feedback, or partnership inquiry — we read everything.

WhatsApp feedback

Partnership inquiry

© 2026 OpiCalc • Calculated Care

Protocols About Privacy Terms

Holiday-Segar

Holiday-Segar Maintenance Fluids: The 100/50/20 rule for estimating basal water and electrolyte requirements in pediatric patients.

Current Weight (kg)

Related Pediatrics Tools

Weight Estimation

Centor Criteria

APLS Drug Dosing

Have feedback about this calculator?Let us know.