Muffins are a bakery favorite, but their fiber content varies wildly — from 6+ grams in a dense bran muffin to under 1 gram in a fluffy blueberry treat. This Muffin Fiber per 100g Calculator turns nutrition label numbers or your own recipe batch totals into a clear, comparable fiber-per-100g figure.
Perfect for diet planning, macronutrient tracking, or just picking a more filling breakfast, the tool outputs fiber per 100g, fiber per muffin when known, percent of the FDA Daily Value (28g), and a fiber-density category. Use label mode for store-bought muffins or recipe mode for homemade batches, then compare brands and bakes with confidence.
🧁 Muffin Fiber per 100g Calculator
Compare muffins by fiber density using nutrition labels or a whole recipe batch.
Nutrition label details
Recipe batch details
How to Use This Tool
Choose the method that matches your data. For a packaged muffin, use Nutrition label mode: enter the fiber per muffin and the muffin's weight in grams or ounces. The tool converts ounces using 1 oz = 28.3495 g before computing per-100g values.
For homemade batches, switch to Recipe batch mode. Add up the fiber from each ingredient, enter the total baked weight of the batch, and optionally the number of muffins. The optional muffin count lets the calculator estimate fiber per muffin; without it, you still get a precise per-100g figure.
The preset buttons are quick illustrations, not brand-exact values. If you compare other breakfast bakes, our bagel nutrition calculator shows how bagels differ.
Tip: Weigh the finished muffin — bakery "medium" muffins can range from 60 g to over 110 g, which changes the per-100g number even when fiber per muffin stays the same.
The Math Behind It
Core formula: Fiber per 100g = (Total fiber ÷ Total weight) × 100
If a batch has 18 g of fiber and weighs 300 g, then 18 ÷ 300 × 100 = 6 g per 100g. Weight in ounces is converted to grams first. The Daily Value shown is based on the FDA reference of 28 g fiber per day. So 5 g per 100g provides 5 ÷ 28 × 100 ≈ 18% DV. Fiber categories in the results use the same 28 g reference adapted to a 100g serving: below 2.8 g is low, 2.8–5.5 g is a good source, and 5.6 g or more is an excellent source.
Worked Examples
Store-bought bran muffin. Label says 5 g fiber per muffin; you weigh 85 g. Fiber per 100g = 5 ÷ 85 × 100 = 5.9 g, about 21% DV — an excellent source. If that same muffin weighed 115 g, fiber per 100g drops to 4.3 g.
Homemade oat-banana batch. Total fiber adds up to 22 g; the baked batch weighs 620 g and makes 12 muffins. Fiber per 100g = 22 ÷ 620 × 100 = 3.5 g. Fiber per muffin = 22 ÷ 12 = 1.8 g, about 6.5% DV.
Standard Fiber Values for Muffins
Typical ranges from product labels and USDA FoodData Central:
| Muffin type | Fiber per 100g | Fiber per medium muffin |
|---|---|---|
| Bran muffin (commercial, dense) | 4.5–7 g | 3–5 g |
| Whole-wheat flour muffin | 2.5–4.5 g | 2–3.5 g |
| Oatmeal muffin with raisins | 2–3.5 g | 1.5–3 g |
| Blueberry muffin (standard recipe) | 1.5–2.5 g | 1–2 g |
| Corn muffin | 1–2 g | 0.8–1.5 g |
| Chocolate chip or plain sweet muffin | 0.8–1.8 g | 0.5–1.5 g |
Tips & Best Practices
- Weigh after baking, not raw batter; water loss concentrates fiber.
- Read serving sizes — brands sometimes list a half muffin as a serving.
- Boost fiber with oat bran, wheat bran, flaxseed, chia, and whole-wheat flour.
- Per-100g numbers reward dense muffins; combine with calorie and protein tracking for the full picture.
Accuracy: Labels round fiber to whole or half grams, so input values may already be approximate. Recipe totals are only as good as the ingredient fiber data you add up.
Frequently Asked Questions
Is 5g of fiber per 100g a lot?
Yes, for a muffin. The FDA considers 5.6 g or more per serving excellent, and most regular muffins land in the 1–3 g per 100g range.
Does baking change fiber?
Total dietary fiber mostly survives heat. The big factor is moisture loss: as muffins bake, weight drops and fiber per 100g rises.
Why does the FDA use 28g as the Daily Value?
The 28 g figure reflects a 2,000-calorie diet and the FDA's 2020 update. See the FDA Daily Value page for details.