Daily Vitamin A Intake: How Much Vitamin A Do You Need?

By The DRI Calculator Team  |  Published: July 30, 2026  |  Updated: July 30, 2026  |  10 min read

Your daily vitamin A intake should be 900 micrograms RAE for men and 700 for women, and that little unit at the end is where the confusion starts. Vitamin A labels use at least three different measures, RAE, IU, and plain micrograms, and they are not interchangeable, which is why the same food can appear to contain wildly different amounts depending on the label. On top of that, vitamin A comes in two forms that behave very differently: one you basically cannot overdose on from food, and one that can be genuinely dangerous in supplements. This guide gives the real numbers by age and sex, decodes the units in plain terms, explains the retinol and beta-carotene split, names the best foods, and covers the safety limits that matter more here than for almost any other vitamin.

What Your Daily Vitamin A Intake Should Be

The recommendation comes from the Recommended Dietary Allowance set by the National Academies. For adults it is 900 micrograms RAE a day for men and 700 micrograms RAE for women, rising to 770 in pregnancy and 1,300 while breastfeeding. Our guide to what DRI is explains how the RDA and the upper limit work together, which matters a great deal for this particular vitamin.

Vitamin A is essential for vision, immune function, reproduction, and the healthy growth of skin and other tissues. Unlike water-soluble vitamins, it is fat-soluble, meaning the body stores it in the liver rather than flushing out the excess. That storage is what makes both the units and the upper limit worth understanding, because unlike vitamin C or the B vitamins, extra vitamin A does not simply leave in your urine.

Daily Vitamin A Intake by Age & Sex (Full Chart)

Vitamin A needs rise through childhood and settle into the adult figures in the late teens, with a modest increase for pregnancy and a large one for breastfeeding.

How much vitamin A do you need per day?

Adult men need 900 micrograms RAE of vitamin A a day and adult women need 700 micrograms RAE. Pregnancy raises the target to 770 micrograms RAE and breastfeeding to 1,300. Children need less, from 300 micrograms RAE at ages 1 to 3, up to 600 by ages 9 to 13.

All of these figures are in micrograms RAE, which is the current official unit. The next section explains what that means and how to make sense of the older IU figures you will still see on many labels.

RAE vs IU: Decoding the Vitamin A Units

This is the part that trips up almost everyone, because vitamin A is measured in two different systems and older products still use the outdated one. Getting them mixed up is the single most common way people miscalculate their intake.

RAE stands for retinol activity equivalents, the current official unit, and it is smart: it already accounts for the fact that different forms of vitamin A are absorbed and used at different rates. IU, or international units, is the older system still printed on many supplements and older labels. Because IU does not account for the source, the same IU figure can mean different amounts of usable vitamin A depending on whether it came from retinol or beta-carotene.

Retinol vs Beta-Carotene: The Two Forms

Behind the units sit two genuinely different forms of vitamin A, and the distinction matters for both nutrition and safety.

Preformed vitamin A (retinol) comes from animal foods such as liver, fish, eggs, and dairy, and from many supplements. The body uses it directly, which makes it efficient but also means it can build up to harmful levels. Provitamin A (beta-carotene) comes from plant foods, especially orange and dark green produce, and the body converts it to active vitamin A only as needed. That built-in throttle is why beta-carotene from food essentially cannot cause vitamin A toxicity: the body simply slows conversion when it has enough.

Best Food Sources of Vitamin A

Vitamin A splits neatly into the two forms across the food groups. Animal foods provide ready-made retinol, while colorful plants provide beta-carotene the body converts on demand.

A single baked sweet potato provides well over a day's target on its own, and it does so as beta-carotene, so there is no overdose concern. Liver sits at the opposite end: it is so concentrated in preformed retinol that health authorities advise against eating it too frequently, and against it entirely in pregnancy.

What Vitamin A Actually Does

Vitamin A earns its essential status through several roles. It is critical for vision, particularly the eye's ability to adjust to low light, which is why one of the earliest signs of deficiency is difficulty seeing at night. It supports the immune system, helping maintain the barriers of the skin and the linings of the respiratory and digestive tracts that keep infection out. It is needed for normal growth and for reproduction and fetal development, and it keeps skin and other tissues healthy by regulating how cells mature. These are the reasons a genuine deficiency has serious consequences, and also why the body bothers to store a reserve.

Can You Take Too Much Vitamin A?

This is where vitamin A differs sharply from the water-soluble vitamins. Because it is stored rather than excreted, too much can accumulate and cause harm, so it has a firm upper limit. For adults the tolerable upper intake level is 3,000 micrograms RAE a day, and crucially, that limit applies only to preformed vitamin A from retinol and supplements, not to beta-carotene from food.

Signs of Low Vitamin A

Vitamin A deficiency is rare in well-fed populations but remains a leading cause of preventable blindness in children worldwide. The earliest and most characteristic sign is night blindness, difficulty seeing in dim light. As deficiency progresses, the eyes and skin become dry, the immune system weakens so infections become more frequent and severe, and in children growth slows. Those most at risk include people with fat-malabsorption conditions such as celiac disease, Crohn's disease, or pancreatic problems, since vitamin A needs dietary fat to be absorbed, along with people with very restricted diets. Because the signs overlap with other conditions, diagnosis should come from a doctor rather than guesswork.

Who Needs to Watch Their Vitamin A

Most people meet their needs easily from a normal diet and do not need to think about vitamin A. A few groups should pay closer attention. Pregnant women need to be careful in both directions: they need adequate vitamin A, covered in our guide to the DRI for pregnancy, but must avoid excess preformed retinol from liver and supplements. People with fat-malabsorption conditions may absorb too little and need monitoring. Those who take multiple supplements should check the combined vitamin A total, since it is easy to stack past the limit. And anyone relying on liver as a regular food should be mindful of how concentrated it is. The differing needs of men and women across life are set out in our guides to the DRI for men and the DRI for women.

How to Hit Your Daily Vitamin A Intake

For almost everyone, food covers this comfortably and safely. Build intake around beta-carotene from colorful plants, sweet potato, carrots, spinach, and other orange and dark green produce, which the body converts as needed with no overdose risk, and let eggs and dairy supply modest retinol. A little dietary fat with these foods improves absorption, since vitamin A is fat-soluble. Reserve supplements for a confirmed deficiency under medical guidance, keep an eye on the combined total if you take several products, and treat liver as an occasional food rather than a staple. Approached this way, vitamin A is one of the easier nutrients to get right.

The most useful starting point is your own number, since it depends on your age, sex, and life stage. Your full nutrient targets, vitamin A included, take only a moment to calculate.

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