Micronutrient calculator for vitamin and mineral requirements by age, sex, and life stage, with RDA, AI, and upper-limit context for supplement-safety review.
Health estimate
Topic review: Maria Santos
Diet & Lifestyle Coach. Assigned as the health topic reviewer for nutrition, macro, calorie, and lifestyle diet calculators.
This page focuses on vitamins and minerals only. Use the DRI calculator when you also need macronutrient rows. Use the UL filter when supplement safety, fortified foods, or high-dose labels are the main concern.
Result
Women 19 to 30 years
This micronutrient sheet gathers the matched vitamin and mineral targets without the macronutrient rows that appear on the full DRI page.
Total rows
23
Vitamins
13
Rows with ULs
16
How to read this sheet RDA and AI are planning targets for generally healthy people. UL is a safety boundary, not a goal; some ULs apply only to supplements, fortified foods, or specific nutrient forms.
Vitamin
Basis
Target
Upper limit
Notes
Vitamin A
RDA
700 mcg RAE
3,000 mcg RAE
Retinol activity equivalents separate preformed vitamin A from carotenoid sources.
Vitamin C
RDA
75 mg
2,000 mg
Vitamin C reference values are higher for pregnancy and lactation.
Vitamin D
RDA
15 mcg
100 mcg
ODS uses updated calcium and vitamin D DRIs: 15 mcg for ages 1 to 70, 20 mcg above 70.
Vitamin E
RDA
15 mg
1,000 mg
Vitamin E recommendations use mg of alpha-tocopherol rather than IU.
Vitamin K
RDA
90 mcg
No established UL
Vitamin K uses an AI rather than an RDA in the DRI tables.
Thiamin
RDA
1.1 mg
No established UL
Thiamin needs increase modestly in pregnancy and lactation.
Riboflavin
RDA
1.1 mg
No established UL
Riboflavin reference values remain low in absolute terms, so supplement labels can look very high.
Niacin
RDA
14 mg NE
35 mg NE
Niacin recommendations use niacin equivalents and the UL applies to supplemental or fortified forms.
Vitamin B6
RDA
1.3 mg
100 mg
Vitamin B6 recommendations rise in older adults and in pregnancy or lactation.
Folate
RDA
400 mcg DFE
1,000 mcg DFE
Folate uses dietary folate equivalents and the periconception 400 mcg folic-acid note remains separate.
Vitamin B12
RDA
2.4 mcg
No established UL
Adults above 50 are often advised to rely on fortified foods or supplements because food-bound absorption can fall.
Pantothenic acid
RDA
5 mg
No established UL
Pantothenic acid uses an AI rather than an RDA in the DRI tables.
Biotin
RDA
30 mcg
No established UL
Biotin uses an AI and high-dose supplements can interfere with some lab tests.
Mineral
Basis
Target
Upper limit
Notes
Calcium
RDA
1,000 mg
2,500 mg
Calcium targets are updated from the modern calcium DRI review, with higher needs for women 51 to 70 and all adults over 70.
Iron
RDA
18 mg
45 mg
Iron requirements rise in adolescence, menstruating adults, and pregnancy, then fall again after menopause.
Magnesium
RDA
310 mg
350 mg
The magnesium UL applies to supplemental or pharmacologic magnesium, not to magnesium naturally present in food.
Phosphorus
RDA
700 mg
4,000 mg
Phosphorus targets peak during adolescence because rapid bone growth raises needs.
Potassium
AI
2,600 mg
No established UL
Potassium uses updated 2019 AIs, and those AIs do not apply to people with impaired potassium excretion.
Zinc
RDA
8 mg
40 mg
Zinc targets rise in growth and pregnancy, and long-term high-dose supplementation can interfere with copper status.
Iodine
RDA
150 mcg
1,100 mcg
Iodine targets rise in pregnancy and lactation because fetal and infant thyroid hormone production depends on maternal intake.
Selenium
RDA
55 mcg
400 mcg
Selenium has a relatively narrow gap between the adult target and the upper limit compared with some other minerals.
Copper
RDA
900 mcg
10,000 mcg
Copper targets rise in pregnancy and lactation, and very high zinc intake can reduce copper absorption.
Manganese
AI
1.8 mg
11 mg
Manganese uses Adequate Intake values rather than RDAs across the life course.
Micronutrient calculator guide: a vitamins-and-minerals reference sheet without the macro
A micronutrient calculator is most useful when it acts as a clean reference sheet for vitamins and minerals only. This guide explains why that narrower scope matters, why basis labels such as RDA and AI should stay visible, and why a reference table is different from both a single-nutrient intake checker and a full DRI page with macronutrient rows.
Why a micronutrient-only sheet can be easier to use than a full DRI page
Many users want to review vitamins and minerals without also scanning carbohydrate, fibre, essential-fat, and AMDR rows. A micronutrient-only page keeps that review focused and faster, especially when the question is “What is the matched target for calcium, iron, folate, or vitamin D in this life stage?”
That narrower scope also reduces interpretation mistakes. It keeps the page centred on vitamins and minerals while still preserving the official DRI basis labels and upper-limit notes that matter for safety review.
Why basis labels belong beside the number
Not every micronutrient target is an RDA. Some rows use AI because the evidence base is not strong enough for a full Recommended Dietary Allowance, and that difference is part of the interpretation rather than decorative metadata.
A useful micronutrient sheet therefore shows both the amount and the basis label. That helps users understand whether they are reading a stronger planning target or a more limited Adequate Intake reference.
Why a sheet like this does not replace intake review
A reference table tells you which row applies to a healthy person in that age, sex, and life-stage group. It does not tell you whether the person actually eats that amount, absorbs it well, stores it normally, or has clinical reasons to need more or less.
That is why the next step after a profile lookup is usually a more specific calculator, such as a single-nutrient intake checker, a food-gap planner, or a supplement comparison.
When upper-limit notes matter most
Upper-limit context becomes especially important when a nutrient has a source-specific rule, such as magnesium from supplements or preformed vitamin A rather than carotenoid-rich foods. A reference sheet cannot assess an actual dose on its own, but it can show whether a UL exists and remind the user not to treat the target and the UL as the same number.
That simple visibility step reduces the chance that a user sees a high-dose supplement label and assumes that any number above 100% of target is automatically dangerous or automatically useful.
Using profile presets, search, and the UL filter
Competitor vitamin and mineral tables often make users scan long pages before they reach the nutrient or life stage they care about. The calculator now starts with practical profile presets, then lets users search for a nutrient such as calcium, iron, folate, vitamin D, potassium, or magnesium without leaving the matched age, sex, and life-stage profile.
The upper-limit-only filter is useful when the main question is supplement safety rather than target planning. It narrows the sheet to rows where an established UL exists, while the notes still explain whether the limit applies to total intake, supplemental intake, fortified foods, or a specific nutrient form.
How to use this with food-gap and supplement tools
A micronutrient reference sheet is the starting point, not the end of a nutrition review. Once the matched target and UL context are clear, users can move to a food-gap calculator for diet planning, a nutrient intake calculator for one nutrient, or a supplement comparison calculator when a label needs closer review.
That workflow is safer than jumping straight from a generic recommended daily value to a high-dose supplement. It keeps reference targets, actual intake, food sources, supplement forms, and medical caution in separate decision steps.
Frequently asked questions
How is this different from the DRI calculator?
This page focuses on vitamins and minerals only. The DRI calculator adds macronutrient rows such as carbohydrate, fibre, essential fats, and AMDR ranges.
How is this different from the nutrient intake calculator?
This page is a profile lookup sheet. The nutrient intake calculator compares one entered amount against one selected nutrient target and shows a gap or coverage percentage.
Why do some rows show AI instead of RDA?
AI is used when the evidence base is not strong enough to define a full RDA. It is still an official planning value, but it should not be read with the same precision as an RDA.
Can this page diagnose deficiency or toxicity?
No. It is a reference tool only. Deficiency, excess, and treatment decisions may require intake review, symptoms, medical history, and sometimes lab testing.
How should I use the upper-limit filter?
Use it when supplement safety or fortified-food exposure is the main question. It shows nutrients with an established UL, but the note still matters because some limits apply only to supplemental, synthetic, or preformed forms rather than every food source.
Why does the calculator include quick profiles?
Quick profiles reduce errors when users want common reference groups such as adult woman, adult man, older adult, pregnancy, or teen. They are shortcuts into the same DRI-backed age, sex, and life-stage lookup rather than separate recommendations.
