How Much Biotin In Eggs? | Real Numbers By Egg Size

Eggs get talked about a lot for protein and choline, yet biotin is the quiet one that keeps popping up in “hair and nails” conversations. If you’re here, you likely want a straight number you can use, plus the fine print that changes that number in real life. Let’s do both.

Biotin is also called vitamin B7. It helps the body run enzymes that handle fats, carbs, and certain amino acids. You don’t need to memorize enzyme names to use this info. What matters day to day is that biotin is a micronutrient your body uses in small amounts, and eggs are a reliable food source when they’re cooked.

Biotin basics and why eggs get mentioned

Biotin shows up across the food supply, but not evenly. Organ meats and some fish pack a lot. Eggs sit in a sweet spot: easy to eat, easy to portion, and steady from week to week.

For most adults, the biotin Adequate Intake (AI) used in U.S. nutrition guidance is 30 mcg per day. That AI exists because researchers did not have enough data to set a Recommended Dietary Allowance for biotin, so the Food and Nutrition Board set AIs instead. You can see the current biotin AIs in the Office of Dietary Supplements nutrient recommendations pages and related DRI references. Nutrient Recommendations gives a clean starting point for the numbers used in public guidance.

Daily Value (DV) is another number people bump into. The DV is used on Nutrition Facts and Supplement Facts labels so you can compare products in the same “percent of a day” language. For biotin, the DV used on U.S. labels for adults and kids age 4+ is 30 mcg. The Office of Dietary Supplements calls this out in its biotin fact sheet, tied to FDA labeling rules. Biotin fact sheet for health professionals is one of the clearest public sources for both the egg number and the DV reference.

How Much Biotin In Eggs?

The cleanest single figure comes from the Office of Dietary Supplements (ODS) table of selected foods: one cooked whole egg contains 10.0 mcg of biotin. ODS also lists this as 33% of the 30 mcg Daily Value. That’s the number most people mean when they ask this question. ODS biotin table of selected foods is the source for that 10 mcg figure.

Two small details shape how you use that number:

• Serving size. The ODS table presents “Egg, whole, cooked” as a standard serving. In everyday life, that maps well to a typical large egg.
• Cooking status. Raw egg white contains avidin, a protein that binds biotin tightly. Cooking changes avidin so it no longer blocks biotin absorption in the same way. ODS spells this out directly when talking about eggs and biotin.

Put plainly: if you’re eating cooked eggs, the 10 mcg figure is a fair anchor. If you’re using raw egg whites in shakes, you’re changing how much biotin you absorb, even if the food itself contained biotin.

Why egg biotin numbers can feel slippery

You may notice that some food databases do not list biotin for eggs at all. That’s not you missing a setting. ODS notes that USDA FoodData Central does not list biotin content for foods in its public display, which is why many apps show a blank for biotin even while listing other vitamins. ODS publishes its own table of biotin in selected foods and cites its sources in the reference list on the same page.

On top of that database gap, the biotin in foods can vary with factors tied to agriculture and processing. You don’t need those details to make dinner, but it explains why different websites sometimes toss out slightly different values.

Cooked egg vs. raw egg white: the avidin issue

Eggs are a special case because of avidin. Raw egg white contains avidin, and avidin binds biotin and can block absorption in the gut. ODS notes that cooking denatures avidin, meaning it loses that binding effect. That’s why “whole egg, cooked” is the useful practical number to work with, not “raw whites in a blender.”

If you like runny yolks, you’re still cooking the white, which is where avidin sits. A soft-boiled egg, a fried egg with set whites, and scrambled eggs all count as “cooked” in the way that matters for avidin.

Does the yolk matter for biotin?

People love to separate eggs, so this comes up a lot. The yolk is where many of the egg’s vitamins and fats live, while the white is mostly protein and water. When you only eat whites, you’re giving up a chunk of micronutrients that come along with the yolk. If your goal is biotin intake from eggs, whole eggs are the more direct route.

If you still prefer whites for taste or macros, you can balance the loss by adding other biotin foods across the week, like salmon, sunflower seeds, sweet potato, or nuts. The table below gives a quick comparison using the ODS biotin values for selected foods.

Food	Typical serving	Biotin (mcg)
Egg, whole, cooked	1 egg	10.0
Beef liver, cooked	3 oz	30.8
Salmon, pink, canned in water	3 oz	5.0
Pork chop, cooked	3 oz	3.8
Sunflower seeds, roasted	1/4 cup	2.6
Sweet potato, cooked	1/2 cup	2.4
Almonds, roasted	1/4 cup	1.5
Spinach, boiled	1/2 cup	0.5
Milk, 2%	1 cup	0.3

The takeaway is simple: eggs are one of the stronger everyday foods for biotin. One egg gets you a meaningful slice of the daily target used on labels, and two eggs gets you most of it, without turning breakfast into a math problem.

How to estimate biotin from the eggs you eat

Start with the ODS number: 10 mcg per cooked whole egg. Then apply a few common-sense tweaks that match how people actually eat eggs.

Egg size changes the number

A “large egg” is a standard grocery baseline, yet cartons also include medium, extra-large, and jumbo. Biotin is tied to the edible portion, so a bigger egg tends to carry more biotin than a smaller one.

If you want a simple working method without pretending the numbers are perfect, scale from the large egg anchor:

• Medium or small eggs: expect a bit less than 10 mcg per egg.
• Extra-large or jumbo eggs: expect a bit more than 10 mcg per egg.

This scaling keeps you grounded without turning breakfast into a lab report. If you track nutrients, treat the 10 mcg as the “large egg” line item and adjust by size when your eggs are clearly smaller or bigger.

Cooking method changes absorption more than the label

The largest cooking-related issue for biotin is not “fried vs. boiled.” It’s “raw whites vs. cooked whites.” Once the whites are cooked, avidin is no longer blocking biotin absorption the same way, which is why ODS highlights cooking as the turning point.

From a food safety angle, cooking also matters. If you want a refresher on safe handling, storage, and cooking guidance for shell eggs, the FDA keeps a central hub of egg safety and regulatory info. FDA egg guidance and consumer info is a solid bookmark, especially if you cook eggs often.

Common egg meals and rough biotin totals

Here are quick totals you can use on the fly, using the 10 mcg cooked whole egg anchor from ODS:

• 1 cooked whole egg: 10 mcg
• 2 cooked whole eggs: 20 mcg
• 3 cooked whole eggs: 30 mcg (around the adult DV)

If your day includes other biotin foods, you may hit the daily target without noticing. Eggs just make it easier because they deliver a decent chunk in one item.

Egg choice	What you’re eating	Biotin takeaway
Hard-boiled	Whole egg, fully cooked	Use the 10 mcg per egg anchor
Scrambled	Whole egg, cooked whites	Use the 10 mcg per egg anchor
Fried (set whites)	Whole egg, cooked whites	Works like other cooked eggs for avidin
Soft-boiled	Set whites, runny yolk	Still counts as cooked for the avidin issue
Egg whites only	Whites with yolk removed	Less biotin per serving than whole eggs
Raw whites in a shake	Raw whites	Avidin can block absorption; cooking flips this
Omelet with extras	Whole eggs plus fillings	Count eggs first, then add other biotin foods if present

When biotin in eggs matters more

Most people get enough biotin from food. True biotin deficiency is uncommon in healthy people eating a mixed diet, and ODS describes it as rare. Eggs can still matter in a few everyday situations:

If you rely on egg whites as a main protein

Egg whites are a clean, easy protein. They’re also a narrower micronutrient choice than whole eggs. If you eat whites daily and rarely eat fish, nuts, seeds, or organ meats, your biotin intake from food may be lower than you think. Swapping in some whole eggs during the week is a simple fix if it fits your diet.

If you eat raw whites often

This is the one egg habit that has a clear biotin angle. ODS states that avidin in raw egg whites binds biotin and prevents absorption, and that cooking denatures avidin so it can’t interfere the same way. If raw whites are a regular thing for you, consider switching to pasteurized liquid egg whites that you still cook, or use cooked egg whites in meal prep.

If you take high-dose biotin supplements

Food amounts are small. Supplements can be massive by comparison. The FDA warns that biotin can interfere with certain lab tests, including troponin tests used in heart attack evaluation, and that this interference can cause incorrect results. If you take biotin supplements and you’re getting blood work, it’s smart to tell your clinician and the lab staff what you take. The FDA page on this topic is direct and readable: Biotin interference with troponin lab tests.

Eggs won’t create that lab-test problem on their own for most people because the dose is small. The supplement angle still matters because many people pair “biotin foods” with a high-dose “hair and nails” pill, not realizing the lab-test caveat exists.

Practical ways to get more biotin from eggs without changing your life

If your goal is simple—eat eggs and count biotin—this section is your checklist.

Choose whole eggs most of the time

Whole eggs give you the yolk, which is where many vitamins and fats are. If you do whites for macros, try mixing: one whole egg plus extra whites is a solid middle ground that still keeps the biotin-and-yolk nutrients in the meal.

Cook the whites

You don’t need to scorch them. You just need the whites set. That one step sidesteps the avidin issue described in the ODS fact sheet.

Batch-cook eggs for steady intake

If you want eggs as a steady biotin source across the week, batch cooking keeps it simple. Hard-boiled eggs, egg muffins, and a container of scrambled eggs all work. Pair them with foods in the ODS table (like sweet potato or seeds) when you want more biotin without extra eggs.

Quick recap you can use while shopping

Here’s the plain-language version, tied to the best public source available:

• ODS lists 10.0 mcg of biotin in one cooked whole egg, which is about 33% of the 30 mcg DV used on U.S. labels. ODS biotin fact sheet
• Raw egg white has avidin, and ODS says avidin binds biotin and blocks absorption; cooking changes avidin so it can’t interfere the same way.
• Two cooked whole eggs gets you near two-thirds of the DV. Three cooked whole eggs lands around the full DV, before counting the rest of your food.
• If you use biotin supplements, the FDA warns about lab test interference; share supplement use with your clinician and lab staff. FDA biotin lab test interference