How Many Calories in A Medium Sized Hard Boiled Egg? A Complete

Most nutrition labels and food trackers round a medium hard-boiled egg to 70 calories, with the true range sitting closer to 63. The figure shifts with the individual egg’s weight, because USDA medium runs 44 to 49 grams per shell-less egg. That single detail is what turns a vague “boiled egg” entry into a number you can actually trust in a calorie counter.

This guide walks through the USDA medium-egg weight class, the calorie and macronutrient breakdown, yolk-versus-white math, size-by-size comparisons, and how to log the egg correctly in MyFitnessPal, Cronometer, and LoseIt.

What Counts as a Medium Egg by USDA Standards

The U.S. Department of Agriculture sorts shell eggs by weight per dozen, not by how they look in the carton. A dozen mediums must weigh between 21 and 24 ounces, which works out to roughly 44 to 49 grams per egg once the shell comes off.

Most grocery shelves stock large eggs, so a true medium can feel smaller in the hand than the carton suggests. The grading is mathematical: take 12 medium eggs, weigh them together, and the total must land inside that 21 to 24 ounce window. If even one or two eggs in the carton run heavy, the dozen stops qualifying as medium and moves up to large.

Where Medium Sits in the Size Hierarchy

Egg sizing runs from peewee (under 18 ounces per dozen) at the bottom up to jumbo (over 30 ounces per dozen) at the top. Medium lands in the lower-middle band, lighter than large and extra-large, heavier than small. The full breakdown looks like this:

When a nutrition label says “1 medium egg,” it refers to an egg in that range, and the calorie count moves with the grams.

The Calorie Count Inside One Medium Hard-Boiled Egg

Within the 44 to 49 gram USDA medium band, total energy falls anywhere from 63 to 70 calories per egg. The FoodData Central entry for a generic boiled egg without size specification rounds to 78 calories, which reflects the USDA nutritional database’s default large-egg reference of 50 grams. Medium runs a touch lower because the egg itself is lighter.

Most food labels and tracker databases round to 70 calories for a boiled egg, which sits at the upper end of the medium range. If you want precision, weigh the egg after peeling and divide by 50 grams to scale the calorie number proportionally.

Macronutrient Breakdown by the Numbers

The calories split cleanly across protein content, fat content, and a sliver of carbohydrate. A medium hard-boiled egg at the 70-calorie mark breaks down roughly like this:

• ▸Protein content: About 6 grams, contributing 24 calories (kcal) from amino acids in both the yolk and the white.
• ▸Fat content: About 5 grams, contributing 45 calories, almost entirely concentrated in the yolk.
• ▸Carbohydrate: Less than 1 gram, contributing roughly 2 calories from trace sugars.

The fat-to-protein ratio is the key reason eggs behave well in low-carb and keto eating patterns. You get a full 6 grams of complete protein alongside enough fat to keep you full, all packed into a food that fits comfortably inside a 70-calorie budget.

Where Those Calories Come From: Egg White vs Egg Yolk

Split a medium hard-boiled egg in half and the calories divide unevenly. The egg yolk carries roughly 50 to 55 calories, and the egg white carries about 15 to 18 calories. That ratio is the single most useful fact for anyone who logs yolks and whites separately.

The white is almost pure protein with a trace of mineral content and a few calories’ worth of water-soluble vitamins. The yolk is where the fat, cholesterol, and fat-soluble nutrients (choline, vitamin D, vitamin B12) live. Discarding the yolk cuts calories nearly in half, while eating only whites leaves you with the lean-protein benefit and a much smaller calorie footprint.

What Changes When You Skip the Yolk

Drop the yolk from a medium egg and the total drops to roughly 17 calories for the white alone. That move is common in bodybuilder-style eating plans and in egg-white cartons at the store, because the white delivers complete protein with virtually no fat. Keep the yolk and you add the choline, vitamin D, and B12 that the white cannot supply on its own.

Trackers that let you log “egg white” and “egg yolk” separately will show 17 calories and 55 calories respectively for a medium egg. Logging the whole egg as a single entry rounds to 70.

The yolk-versus-white math is also why two people eating “an egg” for breakfast can log wildly different calorie numbers without either of them being wrong. The egg is the same; the part they eat is what changed.

How Medium Compares to Small, Large, and Extra-Large Eggs

Hard boiled egg calories by size scale with egg weight, so jumping from one USDA size to the next shifts the total by 8 to 15 calories. That difference compounds across a week of daily egg eating, and it is where most home logging goes wrong.

Here is the size-by-size calorie comparison for a hard-boiled egg, using USDA reference weights:

The 8 to 10 calorie gap between medium and large looks small, but it multiplies. Three medium eggs come in around 198 calories, while three large eggs land closer to 216. Over a year of daily breakfasts, that drift adds up to several thousand logged calories you did not actually eat.

The Default-Setting Trap in Calorie Trackers

Most food databases (including MyFitnessPal, Cronometer, and LoseIt) default a search for “boiled egg” to a large-egg entry at 78 calories. A person who actually boiled a medium egg and logged 78 overstates intake by 8 to 15 calories per egg, and the overestimate stacks with every additional egg. The fix is to override the default entry and search specifically for “medium hard-boiled egg” or to log the egg by its 44 to 49 gram weight.

This is the single most common logging error for egg eaters, and it works in the opposite direction for anyone eating jumbo eggs without realizing their carton was mislabeled at the store.

Does Hard-Boiling Change the Calorie Content

Cooking method barely moves the calorie needle on a plain egg. A hard-boiled medium egg and a raw medium egg of the same weight contain the same amount of energy, because heat does not destroy the macronutrients that carry calories.

What does change the number is what gets added during cooking. Butter in the pan, oil sprayed on a non-stick surface, or a spoonful of mayonnaise on the finished egg each contribute more calories than the egg itself. The egg is the constant; the additions are the variable.

Plain Cooking Methods Compared

Hard-boiled, poached, and scrambled eggs prepared without added fat all sit in the same 63 to 70 calorie range for a medium egg. The differences between methods come down to texture and convenience, not calories. Frying flips the math because the egg absorbs oil from the pan, and that oil can double the total calories if the cook is heavy-handed.

Steam-cooking in the shell (a method some home cooks use) is also calorie-equivalent to boiling, because no fat is involved. The shell simply keeps the water away from the egg’s surface during the cook.

With the cooking method neutralized, the practical question becomes how to fold this fixed number into a daily log.

Putting the Medium Hard-Boiled Egg to Work in Diet Tracking

A medium hard-boiled egg is one of the most efficient protein sources you can log. Six grams of complete protein for 70 calories is a ratio that holds up against chicken breast, Greek yogurt, and most protein powders once you account for preparation and added ingredients.

The egg’s fat content (about 5 grams) contributes to satiety in a way that pure protein powder does not, which is why hard-boiled eggs are a staple of prep-ahead breakfasts and post-workout snacks in low-carb and keto eating patterns.

How to Log the Egg Accurately in Common Trackers

MyFitnessPal, Cronometer, and LoseIt all let you search by specific egg size, but each one buries the medium option under a default large entry. A quick override sequence fixes the problem:

• ▸Search by size: Type “medium hard boiled egg” into the search bar and pick the entry that lists a 44 to 49 gram serving, not the generic “egg” entry.
• ▸Override by weight: If the medium option is missing, log the egg as a custom entry at 45 grams using the generic boiled-egg nutrition per 100 grams (about 155 kcal per 100 g of whole egg, shell removed).
• ▸Split the parts: If you ate only whites or only yolks, log each part as its own line item rather than the whole egg.

Spending an extra 15 seconds on the override prevents the silent 10-calorie drift that comes from letting the app assume a large egg every time.

Cholesterol in Modern Dietary Context

One medium egg yolk contains about 186 milligrams of cholesterol, which used to be a concern when guidelines recommended capping daily intake at 300 milligrams. The Dietary Guidelines for Americans (2020 to 2025) removed that strict cap and now recommend keeping cholesterol intake “as low as possible” while focusing on overall dietary pattern.

For most people without a specific medical condition, the cholesterol in one or two eggs per day does not meaningfully raise blood cholesterol levels. The yolk also delivers nutrients that are hard to get elsewhere: choline for liver function and brain health, vitamin D for bone and immune support, and vitamin B12 for red blood cell formation. Stripping the yolk to save 55 calories also strips those nutrients, and the trade-off is rarely worth it unless a doctor has recommended otherwise.

Final Thoughts

Pin a medium hard-boiled egg to 70 calories in your tracker and you will be within a few calories of the real number for almost any egg in the 44 to 49 gram range. The weight band is what makes the medium label meaningful, and overriding tracker defaults is what keeps the count honest. Yolk versus white math, size-by-size comparison, and the cooking-method reality all point to the same conclusion: the egg is a near-perfect low-calorie protein anchor, and the only thing that throws it off is what you add to the pan or what size your tracker quietly assumes you ate.

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