Glucose Infusion Rate (GIR, mg/kg/min)

Glucose Infusion Rate (GIR, mg/kg/min) | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Health
Input types: number, select
Output type: json
Sample coverage: 4
API ready: Yes

Overview

Calculate glucose infusion rate (GIR) in mg/kg/min for neonatal and pediatric IV nutrition using weight, dextrose concentration, and infusion rate. The calculator accepts weight in kilograms or grams, supports D5 through D50, and returns GIR with related glucose delivery values and a category. It is not medical advice.

When to use

Estimate glucose delivery during neonatal or pediatric IV nutrition.
Check how a dextrose concentration and infusion rate relate to patient weight.
Review whether a calculated GIR falls within a target or higher-risk range.

How it works

1Enter the patient weight and select kg or g as the weight unit.
2Select the dextrose concentration from D5, D10, D12.5, D25, or D50.
3Enter the dextrose infusion rate in mL/h and choose the preferred decimal places.
4The calculator applies GIR = (mL/h × dextrose%) / (weight in kg × 6) and returns the result in mg/kg/min.

Use cases

Neonatal intensive care teams reviewing glucose delivery from an IV dextrose infusion.
Pediatric nutrition planning that requires weight-based glucose calculations.
Clinical education and calculation checks for dextrose concentration and infusion rate.

Examples

1. Neonate receiving D10

Neonatal clinician

Background

A 3 kg neonate is receiving D10 at an infusion rate of 18 mL/h.

Problem

The clinician needs to calculate the weight-based glucose infusion rate.

How to use

Enter 3 for weight, select kg, choose D10, enter 18 mL/h, and set decimal places to 1.

Weight: 3 kg; Dextrose: D10; Infusion rate: 18 mL/h; Decimal places: 1

Outcome

The calculator returns a GIR of 10.0 mg/kg/min, an absolute glucose delivery of 30 mg/min, and the category Higher GIR (6–10 mg/kg/min).

2. Older child receiving D5

Pediatric nutrition clinician

Background

A 20 kg child is receiving D5 at 100 mL/h for glucose delivery.

Problem

The care team wants to quantify the infusion's GIR and compare it with the stated target range.

How to use

Enter 20 for weight, select kg, choose D5, enter 100 mL/h, and set decimal places to 1.

FAQ

What does GIR measure?

GIR measures glucose delivery in milligrams per kilogram of body weight per minute.

What formula does the calculator use?

It uses GIR = (mL/h × dextrose%) / (weight in kg × 6).

Can I enter a newborn's weight in grams?

Yes. Select g (newborn), and the calculator converts the weight to kilograms.

Which dextrose concentrations are supported?

The calculator supports D5, D10, D12.5, D25, and D50.

What GIR range is commonly used for term neonates?

The stated target range for term neonates is 4–6 mg/kg/min. Clinical interpretation requires professional judgment and monitoring.

Weight: 20 kg; Dextrose: D5; Infusion rate: 100 mL/h; Decimal places: 1

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Neonate receiving D10

2. Older child receiving D5

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