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Reference Density•90g / US Cup

28 Grams of Rolled Oats (Old-Fashioned) to Cups

Baking volume guide, measurement breakdown, and density calculations for 28g of rolled oats (old-fashioned).

Direct Answer

28 grams of rolled oats (old-fashioned) converts to 0.31 cups (5 tablespoons).

Unless another cup standard is selected, GramsToCups uses the US Customary cup (defined here as 236.588 mL), calculated with a reference density of 90 grams per cup. In common kitchen measurements, this is equivalent to 5 tablespoons, or 0.99 dry ounces.

Practical Measurement Decomposition & Shortcut Advice

Spoon Breakdown

5 tablespoons

Nearest Clean Cup Mark

⅓ cup (30g basis)

The nearest clean measure is ⅓ cup, which is 2g under. That is suitable for stovetop porridge but a digital scale is recommended for granola cluster baking.

Convert 28g Rolled Oats to Other Volume Units

Calculate how 28 grams of rolled oats (old-fashioned) converts across US customary, US legal, metric, and UK imperial cups.

28g
grams
Brand Density & Package OverrideKing Arthur Baking

Custom package weights override standard database densities for this session without altering official database records.

Calculated Conversion Output
5 tablespoons
0.31 cups
Basis: 1 US Customary Cup (236.59 ml) = 90g (Rolled Oats)
1 Cup Measuring Container
1 Cup¾½¼
Cross-Unit Equivalent Strip
Tablespoons5 tbsp
Teaspoons14.9 tsp
Ounces0.99 oz
Millilitres73.6 ml
Butter SticksN/A
Pounds0.06 lbs
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Cross-Unit Conversion Table for 28g Rolled Oats (Old-Fashioned)

Complete measurement equivalents for 28 grams of rolled oats (old-fashioned) across standard kitchen units.

Cross-Unit Conversion Table for 28g Rolled Oats (Old-Fashioned)
Measurement UnitConverted ValueConversion Basis
US Customary Cups0.31 cups (5 tablespoons)236.588 ml / cup (90g/cup default)
US Legal Cups0.31 cups240 ml nutrition label basis
Metric Cups0.29 cups250 ml international standard
US Tablespoons5.0 tbsp16 tbsp per US cup
US Teaspoons14.9 tsp48 tsp per US cup
Ounces Weight0.99 oz28.3495 grams per dry oz
Fluid Volume (ml)73.6 mlDensity: 0.3804 g/ml
Pounds (lbs)0.062 lbs453.592 grams per lb

Recipe Context: Measuring 28g of Rolled Oats (Old-Fashioned)

28 grams of rolled oats (old-fashioned) measures to 0.31 cups (5 tablespoons).

Scoop into cup and level gently.

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Frequently Asked Questions: 28g Rolled Oats (Old-Fashioned)

How many cups is 28 grams of rolled oats (old-fashioned)?

28 grams of rolled oats (old-fashioned) equals 0.31 cups (5 tablespoons), based on a reference density of 90 grams per US customary cup. This is equivalent to 5 tablespoons.

Is 28g of rolled oats (old-fashioned) equal to ⅓ cup?

Yes. 28 grams of rolled oats (old-fashioned) is practically identical to ⅓ cup (differing by only 2 grams), making standard cup measures accurate for this weight.

Should I measure 28g of rolled oats (old-fashioned) by weight or volume?

Measuring 28 grams on a digital kitchen scale is always recommended for precision baking. However, if using volume, Scoop into cup and level gently.

Data Sources & Editorial Verification

Our Calculation Methodology →
Primary Density Source

King Arthur Baking

Editorial Audit

Last reviewed on 2026-08-20

Methodology & formulas audited against our calculation standards.