Pediatric Weight Calculator
APLS Formula
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Luscombe-Owens
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Note
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Estimating Pediatric Weight from Age
APLS formulas: ages 1-5 = (2*age)+8 kg; ages 6-12 = (3*age)+7 kg. For emergencies when weighing is not possible.
Luscombe-Owens: (3*age)+7 for ages over 1. May be more accurate for modern children.
These give median estimates. Length-based (Broselow tape) is more accurate. Always weigh when feasible.
Disclaimer: This calculator is for informational purposes only and does not constitute financial, tax, or legal advice. Always consult a qualified professional for decisions specific to your situation.
Frequently Asked Questions
When to use weight estimation?
Only in emergencies when weighing is not feasible, such as resuscitation.
Most accurate formula?
No single formula is best for all ages. Broselow tape (length-based) is generally more accurate.
Age range?
Designed for ages 1-12. Below 1 uses infant formulas. Above 12, variation is too great.
How accurate?
Within 10-20% for 25th-75th percentile. For very large/small children, errors can be 30%+.