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MCG to IU Converter

Complete Vitamin Converter

Professional Multi-Vitamin Unit Conversion Tool
Powered by Bondage Valley Care

Universal Vitamin Unit Converter

Comprehensive tool for converting between different units for all essential vitamins and nutrients. Perfect for healthcare professionals, nutritionists, and anyone managing vitamin supplementation.
Enter Value to Convert
Enter a positive number for conversion
Conversion Direction
Available options will appear after selecting a vitamin
Select a vitamin and enter a value to see the conversion result
About Vitamin Unit Conversions

Understanding Different Units:

MCG (Micrograms) - Metric unit for very small amounts (1/1,000,000 of a gram)

MG (Milligrams) - Metric unit (1/1,000 of a gram)

IU (International Units) - Based on biological activity, varies by vitamin

RE (Retinol Equivalents) - Used for Vitamin A activity

DFE (Dietary Folate Equivalents) - Used for folate/folic acid

Alpha-TE (Alpha-Tocopherol Equivalents) - Used for Vitamin E


Important: Conversion factors are based on international standards and may vary slightly between organizations. Always consult healthcare professionals for medical dosing.

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Clinically Accurate Tool

The converter focuses solely on vitamins that older adults still encounter in International Units (IU)—namely Vitamins D, A (retinol and beta-carotene) and E.

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One-Step Conversion

The tool instantly applies the correct factor in the right direction—no need to remember formulas or swap pages for reverse calculations.

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Built-In Safety Strip

After conversion, a colour bar appears beneath the result. Green means the dose sits within the daily safe limit for adults aged 65 plus.

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Senior-Friendly Design

All data stays on the user’s device—no accounts, cookies or internet connection required—meeting UK GDPR standards while working perfectly in care homes, clinics or at home.

MCG to IU Converter

mcg ⇄ IU Converter

In most of the cases, at Bondage Valley Care Agency UK, we assist dementia patients who are confused with vitamin labeling on NHS documents written in micrograms (mcg) and pharmacy bottles in International Units (IU). When we get older it is even more important to get the dosage correct particularly with the fat-soluble vitamins such as A, D, E, and K, where excess or deficiency can have adverse health effects.

 

And that is why we developed a straightforward correct converter to do the guess work. It allows safe and accurate dosing, which makes you and your care team make informed decisions with confidence. Any number counts and ours ensures that it is the correct one.

real testimonials

Reviews About Our Vitamin Dose Converter

— Joan M
“Switching from my old 1,000 IU vitamin D tablets to the GP’s 25 mcg prescription was confusing until I used this converter. One click, and the numbers finally matched.”
— Joan M
Norwich
— Harish K
“Accurate factors, colour-coded safety alerts and no adverts—exactly what I wish my customers had 30 years ago. I recommend it to friends daily.”
— Harish K
Cardiff
— Linda T
“Mum’s multivitamin lists vitamin A in IU. Typing it into the tool showed she was near the limit, so we switched brands and avoided overdoing it.”
— Linda T
Birmingham
— Walter P
“I take warfarin, so vitamin E dose matters. The converter’s amber warning reminded me to ask my cardiologist before adding a new supplement.”
— Walter P
Liverpool
— Rita S
“Large text, clear buttons and offline use mean I can demonstrate it in village halls where Wi-Fi is patchy. Older neighbours grasp it instantly.”
— Rita S
London