Peanut Butter Macros: Complete Nutrition Facts & Calories

Reviewed by Jessica Williams, CPT, CSCS

Creamy peanut butter in glass jar with peanuts - 25g protein, 20g carbs, 50g fat per 100g

Peanut butter is one of America’s favorite foods—and one of the easiest to overeat. That creamy, protein-packed spread seems healthy, and it is. But at nearly 100 calories per tablespoon, peanut butter tracking errors can derail your macros fast.

Whether you’re spreading it on toast, blending it into smoothies, or eating it straight from the jar (no judgment), knowing exact peanut butter macros is essential for any macro-focused diet.

This guide covers everything: exact macros for every type and serving size, how to measure properly, and how to make peanut butter work whether you’re cutting or bulking.

Jar of peanut butter with spoon and peanuts on wooden surface

Peanut Butter Macros: Quick Reference

Here’s what you need to know at a glance for standard creamy peanut butter.

By Tablespoon

ServingCaloriesProteinCarbsFatFiber
1 tbsp (16g)944g3g8g1g
2 tbsp (32g)1888g6g16g2g
3 tbsp (48g)28212g9g24g3g
4 tbsp (64g)37616g12g32g4g

By Weight

ServingCaloriesProteinCarbsFatFiber
100g58825g20g50g6g
50g29412.5g10g25g3g
28g (1 oz)1657g5.6g14g1.7g

Critical note: These numbers assume LEVEL tablespoons. A heaping tablespoon can easily be 1.5-2 tablespoons worth.

The Tablespoon Problem

Peanut butter is the poster child for measuring errors. A “tablespoon” from the jar rarely matches what’s on the nutrition label.

Real-World Tablespoon Comparison

Scoop StyleActual AmountCalories
Level tablespoon16g94
Rounded tablespoon22g130
Heaping tablespoon28g165
”Generous” tablespoon35g+206+

The math: If you eat two “generous” tablespoons thinking it’s 188 calories, you might actually consume 400+ calories. That’s a 200+ calorie tracking error per sitting.

How to Measure Peanut Butter Accurately

Method 1: Weigh it (Most Accurate)

  1. Place jar on scale, tare to zero
  2. Scoop out desired amount
  3. The negative number = what you removed
  4. 32g = standard 2 tbsp serving

Method 2: Level Tablespoon

  1. Scoop peanut butter
  2. Use the back of a knife to level flat
  3. This gives you an actual tablespoon

Method 3: Portion Cups

  • Some brands sell single-serve cups (Justin’s, Barney Butter)
  • Pre-portioned = no measuring needed
  • Usually 1.15 oz (32g) per cup

Measuring peanut butter with a tablespoon showing proper level measurement

Peanut Butter Types Compared

Not all peanut butter is created equal. Here’s how different types stack up.

Per 2 Tablespoons (32g)

TypeCaloriesProteinCarbsFatSugar
Natural creamy1908g6g16g1g
Natural crunchy1908g6g16g1g
Regular creamy1887g7g16g3g
Regular crunchy1887g7g16g3g
Reduced fat1908g15g12g4g
Honey roasted1906g12g15g7g
Powdered (PB2)455g5g1.5g1g

Natural vs. Regular: What’s the Difference?

Natural peanut butter:

  • Ingredients: Peanuts, maybe salt
  • Oil separates and needs stirring
  • Slightly grittier texture
  • No added sugars or hydrogenated oils

Regular peanut butter:

  • Ingredients: Peanuts, sugar, hydrogenated vegetable oil, salt
  • Smooth, no separation
  • Contains added sugar (2-3g per serving)
  • May contain trans fats from hydrogenated oils

Macro impact: Nearly identical calories and macros. The main difference is 2-3g less sugar in natural and no trans fats.

Recommendation: Natural is cleaner, but regular isn’t terrible. The sugar difference is minimal. Choose based on texture preference and ingredient philosophy.

Reduced-Fat Peanut Butter: A Trap?

Per 2 tbspRegularReduced FatDifference
Calories188190+2
Fat16g12g-4g
Carbs6g15g+9g
Sugar3g4g+1g

What happened? They removed fat and added sugar/carbs to maintain texture. You save 4g fat but gain 9g carbs. Same or MORE calories.

Verdict: Skip reduced-fat peanut butter. It’s not lower calorie and has worse macros for most goals.

Powdered Peanut Butter (PB2, PBfit)

Powdered peanut butter is regular peanut butter with most of the fat pressed out.

Powdered vs. Regular Comparison

Per 2 tbspRegular PBPowdered PBSavings
Calories18845-60~130 cal
Protein8g5-6g-2-3g
Fat16g1.5-2g~14g
Carbs6g5g~1g

When to Use Powdered PB

Great for:

  • Smoothies (peanut flavor, fewer calories)
  • Oatmeal (stirring is easier)
  • Protein shakes
  • Baking (less fat means different texture)
  • Dipping sauces (mix with soy sauce, honey)

Not great for:

  • Spreading on toast (too dry)
  • When you want satiety (fat keeps you full)
  • Getting healthy fats in your diet

Making Powdered PB Spreadable

Mix 2 tbsp powder + 1 tbsp water = spreadable consistency

  • This yields ~50 calories
  • Texture is thinner than regular PB
  • Good for when you want the flavor but not the calories

Making Peanut Butter Work for Different Diets

Weight Loss/Cutting

Peanut butter can fit a cut, but portion control is everything:

The good:

  • Protein + fat = high satiety
  • Can satisfy cravings (chocolate PB = dessert)
  • 2 tbsp is a legitimate snack

The risk:

  • Extremely easy to overeat
  • Calorie-dense (588 cal per 100g)
  • “One more spoonful” syndrome

Cutting strategies:

  • Use powdered PB when possible
  • Measure EVERY time (never eat from jar)
  • Keep peanut butter portions to 1 tbsp if tracking strictly
  • Pair with high-volume foods (PB + celery vs. PB on toast)

Volume hack: 1 tbsp PB (94 cal) + 2 cups celery (14 cal) = 108 cal total, lots of food

Keto/Low-Carb

Peanut butter fits keto in moderation:

Net carbs per 2 tbsp: ~4g (6g total - 2g fiber)

Daily Carb LimitPB PortionNet Carbs Used
20g2 tbsp4g (20%)
50g2 tbsp4g (8%)

Keto tips:

  • Choose natural PB (no added sugar)
  • Watch portions (fat calories add up)
  • Pair with keto-friendly items (celery, low-carb bread)

High-Protein Diet

Peanut butter provides protein but shouldn’t be a primary source:

Protein efficiency comparison:

Food (188 calories)Protein
Peanut butter (2 tbsp)8g
Chicken breast (4 oz)35g
Greek yogurt (1 cup)18g
Eggs (2.5 large)16g

How to use: Add peanut butter to boost protein in meals (smoothies, oatmeal) rather than relying on it as a protein source.

Muscle Building/Bulking

Peanut butter is a bulking staple—easy calories from good sources:

Why it works for bulking:

  • 188 calories in 2 tablespoons
  • Easy to add to meals
  • Doesn’t fill you up as much as protein
  • Relatively cheap calories

Bulking additions:

Add PB ToExtra Calories
Smoothie (2 tbsp)+188
Oatmeal (2 tbsp)+188
Protein shake (1 tbsp)+94
Pre-bed snack (3 tbsp)+282

High-calorie PB shake (600+ cal):

  • 2 tbsp peanut butter (188)
  • 1 banana (105)
  • 1 cup whole milk (150)
  • 1 scoop whey (120)
  • 1 tbsp honey (64)
  • Total: 627 calories, 36g protein

Peanut butter smoothie with bananas and oats

Peanut Butter vs. Other Nut Butters

How does peanut butter compare to alternatives?

Per 2 Tablespoons (32g)

Nut ButterCaloriesProteinCarbsFatBest For
Peanut1888g6g16gProtein, value
Almond1967g6g18gVitamin E, fiber
Cashew1885g9g16gCreaminess, taste
Sunflower seed2006g7g18gNut-free option
Walnut1854g4g18gOmega-3s
Hazelnut (Nutella*)2002g22g12gDessert

*Nutella is mostly sugar and should be considered a spread, not a nut butter.

Why Choose Peanut Butter?

Best protein: 8g per serving beats all competitors Best value: Cheapest nut butter by far Most versatile: Works in savory and sweet applications

When to Choose Alternatives

  • Almond butter: More vitamin E, slightly more fiber
  • Cashew butter: Creamier texture, good for sauces
  • Sunflower seed butter: Nut allergy alternative

Meal Ideas with Peanut Butter

Breakfast Options

PB Banana Oatmeal:

IngredientCaloriesProtein
1/2 cup oats1566.8g
1 tbsp PB944g
1/2 banana530.6g
Total30311.4g

PB Protein Toast:

IngredientCaloriesProtein
2 slices whole grain bread1608g
2 tbsp PB1888g
1 tbsp honey (optional)640g
Total348-41216g

Snack Combinations

Apple + PB (Classic):

  • 1 medium apple (95 cal) + 2 tbsp PB (188 cal)
  • Total: 283 calories, 8g protein

Celery + PB (Volume version):

  • 4 celery stalks (10 cal) + 2 tbsp PB (188 cal)
  • Total: 198 calories, 8g protein

PB + Greek Yogurt Dip:

  • 1/2 cup Greek yogurt (65 cal, 12g protein)
  • 1 tbsp PB (94 cal, 4g protein)
  • Mix together for fruit dip
  • Total: 159 calories, 16g protein

Protein-Boosted Recipes

Peanut Butter Protein Balls (makes 12):

IngredientAmount
Natural PB1 cup
Oats1 cup
Protein powder1/2 cup
Honey3 tbsp
Dark chocolate chips1/4 cup

Per ball: ~150 calories, 6g protein

Thai Peanut Chicken:

IngredientCaloriesProtein
6 oz chicken breast28153g
2 tbsp PB sauce1004g
1 cup vegetables502g
Total43159g

PB Sauce Recipe (for cooking):

  • 2 tbsp PB
  • 1 tbsp soy sauce
  • 1 tsp sesame oil
  • 1 tsp honey
  • Water to thin

Makes 4 servings, ~50 cal each

Dessert/Sweet Treats

PB Chocolate “Nice Cream”:

IngredientCalories
2 frozen bananas210
2 tbsp PB188
1 tbsp cocoa powder12
Total (2 servings)~205 each

Blend frozen bananas until creamy, swirl in PB and cocoa.

Common Tracking Mistakes

Mistake #1: Never Measuring

“I’ve been eating peanut butter for years, I know what 2 tablespoons looks like.”

You probably don’t. Most people overestimate by 50-100%.

Fix: Measure every time, especially during a cut. Use a scale for best accuracy.

Mistake #2: Eating From the Jar

You told yourself “just a little” and ate 4 tablespoons (376 calories).

Fix: Scoop your portion into a separate dish. Put the jar away. Eat from the dish.

Mistake #3: Forgetting Cooking PB

Peanut sauce on your stir-fry, PB in your smoothie, PB in your baked oatmeal—it adds up.

Fix: Log ALL peanut butter, not just obvious servings.

Mistake #4: Assuming “Natural” = Fewer Calories

Natural peanut butter has nearly identical calories to regular.

Fix: Track natural PB the same as regular. The health benefit is cleaner ingredients, not fewer calories.

Mistake #5: Not Counting the Knife Lick

That “tiny bit” left on the knife after spreading? It’s probably 25-50 calories.

Fix: Either count it (round up your serving) or don’t lick the knife.

Peanut Butter Storage and Quality

Storage Guidelines

LocationDurationNotes
Pantry (regular PB)3-4 monthsStable, no separation
Pantry (natural PB)1-2 monthsStir before use
Refrigerator6+ monthsExtends life, firms up

Natural PB tip: Store upside down in the pantry. The oil distributes, making stirring easier.

Signs PB Has Gone Bad

  • Rancid or “off” smell
  • Very dry, crumbly texture
  • Dark color change
  • Bitter taste

Peanut butter rarely spoils in a dangerous way—it mostly loses quality and taste.

Health Benefits Beyond Macros

Per 2 tbsp serving:

NutrientAmount% Daily Value
Niacin4.2mg21%
Magnesium49mg12%
Phosphorus115mg12%
Vitamin E2.9mg10%
Vitamin B60.2mg9%

Research-backed benefits:

  • Associated with reduced heart disease risk
  • May improve blood sugar control
  • Linked to lower weight despite calorie density
  • Good source of plant protein and healthy fats

The Bottom Line

Peanut butter is a macro-friendly food that fits most diets—when tracked accurately:

  • 188 calories per 2 tbsp — Know this number
  • 8g protein — Highest among nut butters
  • 16g fat — Mostly healthy unsaturated fats
  • 6g carbs — Fits low-carb diets in moderation

Key tracking rules:

  1. Always measure (scale > tablespoon > eyeball)
  2. Never eat from the jar
  3. Log ALL peanut butter (cooking, smoothies, everything)
  4. A level tablespoon, not heaping

Peanut butter can help with satiety during a cut or provide easy calories during a bulk. The key is knowing exactly how much you’re eating—because estimation errors with peanut butter are easy to make and calorically significant.

Related guides:

Sarah Chen
Sarah Chen, MS, RD

Sarah Chen is a registered dietitian with over 10 years of experience helping clients achieve sustainable weight management through evidence-based nutrition strategies. She specializes in macro-based nutrition planning and has worked with competitive athletes, corporate wellness programs, and individual clients seeking body composition changes.

View all articles by Sarah →

Note: Nutrition values are approximate and may vary based on preparation method and source.