How many mL are in a teaspoon of medicine?

One teaspoon equals approximately 5 mL. One tablespoon equals approximately 15 mL. However, kitchen spoons vary in size, so always use a proper dosing syringe, cup, or dropper for medications.

How do I convert mg to mL for liquid medicine?

You need to know the concentration. If medicine is 100 mg/5 mL and you need 200 mg: 200 mg ÷ (100 mg/5 mL) = 10 mL. The formula is: mL = (desired dose in mg ÷ concentration in mg/mL).

How is pediatric dosing calculated?

Pediatric doses are typically weight-based, calculated as mg per kg of body weight. For example, if the dose is 10 mg/kg and the child weighs 20 kg, the dose is 200 mg. Always verify with a pharmacist or pediatrician.

Medication Dosage Conversions Guide

Household to Metric Conversions

Household	Metric (mL)
1/4 teaspoon	1.25 mL
1/2 teaspoon	2.5 mL
1 teaspoon	5 mL
1 tablespoon	15 mL
1 fluid ounce	30 mL
1 cup	240 mL

Dosage Calculation Formula

Volume (mL) = Desired dose (mg) ÷ Concentration (mg/mL)

Example: Ibuprofen Suspension (100 mg/5 mL)

Need 200 mg dose: 200 ÷ 20 = 10 mL (2 teaspoons)
Need 300 mg dose: 300 ÷ 20 = 15 mL (1 tablespoon)
Need 100 mg dose: 100 ÷ 20 = 5 mL (1 teaspoon)

Weight-Based Dosing

Dose (mg) = Weight (kg) × Dose rate (mg/kg)

Weight (lbs)	Weight (kg)	At 10 mg/kg	At 15 mg/kg
22	10	100 mg	150 mg
33	15	150 mg	225 mg
44	20	200 mg	300 mg
55	25	250 mg	375 mg
66	30	300 mg	450 mg

Important Safety Notes

Always use a calibrated measuring device, never kitchen spoons
Double-check concentrations when switching between brands
Verify weight-based doses with a pharmacist
Store medication measuring devices with the medication

Disclaimer: This guide is for educational purposes only. Always follow your healthcare provider's dosing instructions.