Vitamins Explained
Vitamins support immunity, vision, bone health, and energy metabolism.
Eat a colorful mix of vegetables, fruit, whole grains, and lean proteins to cover most needs without supplements.
About Vitamins Explained
Free online vitamins explained. Water- and fat-soluble vitamins and food sources. No signup required — runs in your browser.
Why choose Online Tool Hub?
- Free forever — supported by non-intrusive ads
- USDA-backed food data where applicable
- Works on desktop and mobile
- Part of 24 free nutrition tools on Online Tool Hub
Frequently asked questions
- What is covered in Vitamins Explained?
- Water- and fat-soluble vitamins and food sources.
- Is my health data sent to a server?
- Calculators run in your browser. Food searches query USDA or Open Food Facts APIs — we do not require an account.
- Do I need an account?
- No signup is required. All nutrition tools on Online Tool Hub are free to use.