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Glucose Infusion Rate (GIR) Calculator

GIR = (rate · dextrose %) / (weight · 6) mg/kg/min.

Compute the glucose infusion rate in mg/kg/min from the IV fluid rate (mL/h), dextrose concentration (% w/v), and patient weight (kg). The factor 6 = 60 (min/h) ÷ 10 (g/dL → mg/mL). Neonates typically receive 4-8 mg/kg/min.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

mL/h
%
kg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

GIR = rate_mL/h · dextrose_% / (weight_kg · 6)

In depth

Compute the glucose infusion rate in mg/kg/min from the IV fluid rate (mL/h), dextrose concentration (% w/v), and patient weight (kg). The factor 6 = 60 (min/h) ÷ 10 (g/dL → mg/mL). Neonates typically receive 4-8 mg/kg/min.