# What if a medicine search uses kilograms but the bottle chart uses pounds?

Canonical URL: https://kintoolkit.com/questions/medicine-dose-pounds-kilograms

Kilograms and pounds describe body weight; milligrams describe medicine amount; milliliters describe liquid volume. Converting a weight does not establish a medicine dose or show that a different bottle’s directions apply.

## Products in this guide

| Product | Form | Ingredient | Printed strength | References |
| --- | --- | --- | --- | --- |
| Children’s TYLENOL | Oral suspension | Acetaminophen | 160 mg / 5 mL | [Enlarge label](https://kintoolkit.com/bottles/tylenol-bottle-display-1400.webp) · [Dosage chart](https://kintoolkit.com/childrens-tylenol-dosage-calculator#label-charts) · [Manufacturer guidance](https://www.tylenol.com/safety-dosing/dosage-for-children-infants) |
| Infants’ TYLENOL | Oral suspension | Acetaminophen | 160 mg / 5 mL | [Enlarge label](https://kintoolkit.com/bottles/infants-tylenol-front-display-1400.webp) · [Dosage chart](https://kintoolkit.com/infant-tylenol-dosage-calculator#label-charts) · [Manufacturer guidance](https://www.tylenol.com/safety-dosing/dosage-for-children-infants) |
| Children’s MOTRIN | Oral suspension | Ibuprofen | 100 mg / 5 mL | [Enlarge label](https://kintoolkit.com/bottles/motrin-bottle-display-1400.webp) · [Dosage chart](https://kintoolkit.com/ibuprofen-dosage-calculator#label-charts) · [Manufacturer guidance](https://www.motrin.com/children-infants/dosing-charts) |
| Infants’ MOTRIN | Concentrated drops | Ibuprofen | 50 mg / 1.25 mL | [Enlarge label](https://kintoolkit.com/bottles/infants-motrin-bottle-display-1400.webp) · [Dosage chart](https://kintoolkit.com/infant-ibuprofen-dosage-calculator#label-charts) · [Manufacturer guidance](https://www.motrin.com/children-infants/dosing-charts) |
| Children’s ZYRTEC | Syrup | Cetirizine HCl | 1 mg / mL | [Enlarge label](https://kintoolkit.com/bottles/childrens-zyrtec-bottle-display-1400.webp) · [Dosage chart](https://kintoolkit.com/cetirizine-pediatric-dose-calculator#label-charts) · [Manufacturer guidance](https://www.zyrtec.com/products/zyrtec-dosage-guide) |

## Start with the exact bottle, not a generic pediatric formula

The fever-medicine references here use the manufacturers’ printed pound and age bands. The Zyrtec syrup reference uses age groups. A search for “dose by kg” does not make these tools continuous mg/kg calculators.

- [TYLENOL: full manufacturer guidance](https://www.tylenol.com/safety-dosing/dosage-for-children-infants)
- [MOTRIN: full manufacturer guidance](https://www.motrin.com/children-infants/dosing-charts)
- [ZYRTEC: full manufacturer guidance](https://www.zyrtec.com/products/zyrtec-dosage-guide)

## Do not round a converted weight into an available row

If your measurement and the package use different units, or the value falls between the printed rows, ask a pharmacist or clinician to clarify the applicable directions. Do not choose a larger band merely because the tool offers it. Age restrictions remain relevant even when a weight seems to match.

- [Age and weight rows that disagree](https://kintoolkit.com/questions/child-age-weight-different-dose-chart-rows)

## Concentration is a separate unit check

A label such as 160 mg per 5 mL describes the liquid strength. It is neither a child’s weight nor an instruction to give 5 mL. Read the amount, timing and limits from the correct product’s full directions and use its supplied device.

- [Understand mg and mL](https://kintoolkit.com/questions/tylenol-160-mg-per-5-ml-meaning)
- [Read a medicine syringe or cup](https://kintoolkit.com/questions/measure-childrens-liquid-medicine)
- [FDA: reading the Drug Facts label](https://www.fda.gov/drugs/understanding-over-counter-medicines/over-counter-drug-facts-label)

## Related questions



- [Can I calculate children’s cetirizine dosage in mg/kg?](https://kintoolkit.com/questions/childrens-cetirizine-mg-per-kg)
- [What does 160 mg per 5 mL mean on a Tylenol bottle?](https://kintoolkit.com/questions/tylenol-160-mg-per-5-ml-meaning)
- [What if my child’s age and weight fall in different dosage-chart rows?](https://kintoolkit.com/questions/child-age-weight-different-dose-chart-rows)

## About these references

These are educational references for the exact US products shown, not personalized prescriptions or clinically reviewed dosing protocols. Read your package’s full Drug Facts. Product guides do not expand the bottles supported by the calculators.

Sources checked and page updated: 2026-10-23. This records source verification, not clinical review.

- [How KinToolkit prepares references](https://kintoolkit.com/about)

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