Written By: Gloria Tsang, RD
Title: Founding Registered Dietitian
Alumni: University of British Columbia
Last Updated on:
Micronutrient Needs Calculator
Vitamins and minerals support everything from immune function and bone health to energy metabolism and brain development. This micronutrient calculator estimates your recommended daily needs (top 8 most searched micronutrient) based on guidelines from the following sources:
Values are adjusted for age, gender, and life stage to reflect differences in nutritional requirements.
Essential Nutrients Calculator
Calculate your daily needs for 8 essential nutrients with Canada vs US RDA values
Sources
HealthCastle has strict sourcing guidelines. We reference peer-reviewed studies, scientific journals and associations. We only use quality, credible sources to ensure content accuracy and integrity.
- Health Canada. "Dietary Reference Intakes Tables." Government of Canada, https://www.canada.ca/en/health-canada/services/food-nutrition/healthy-eating/dietary-reference-intakes/tables.html. Accessed 2025. ↩︎
- World Health Organization. Vitamin and Mineral Requirements in Human Nutrition. 2nd ed., WHO Press, 2004, https://apps.who.int/iris/bitstream/handle/10665/42716/9241546123.pdf ↩︎
- Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. National Academies Press, 2001, https://www.ncbi.nlm.nih.gov/books/NBK222310/ ↩︎
Alumni: University of British Columbia – Gloria Tsang is the author of 6 books and the founder of HealthCastle.com, the largest online nutrition network run by registered dietitians. Her work has appeared in major national publications, and she is a regularly featured nutrition expert for media outlets across the country. The Huffington Post named her one of its Top 20 Nutrition Experts on Twitter. Gloria’s articles have appeared on various media such as Reuters, NBC & ABC affiliates, The Chicago Sun-Times, Reader’s Digest Canada, iVillage and USA Today.
