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Reference Density•90g / US Cup

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

Baking volume guide, measurement breakdown, and density calculations for 340g of rolled oats (old-fashioned).

Direct Answer

340 grams of rolled oats (old-fashioned) converts to 3.78 cups (3 cups + 12 tablespoons + 1¼ teaspoons).

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 3 cups + 12 tablespoons + 1¼ teaspoons, or 11.99 dry ounces.

Practical Measurement Decomposition & Shortcut Advice

Spoon Breakdown

3 cups + 12 tablespoons + 1¼ teaspoons

Nearest Clean Cup Mark

4 cups (360g basis)

The nearest clean measure is 4 cups, which is 20g under. That is suitable for stovetop porridge but a digital scale is recommended for granola cluster baking.

Convert 340g Rolled Oats to Other Volume Units

Calculate how 340 grams of rolled oats (old-fashioned) converts across US customary, US legal, metric, and UK imperial cups.

340g
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
3 cups + 12 tablespoons + 1¼ teaspoons
3 ¾ cups
3.78 cups
Basis: 1 US Customary Cup (236.59 ml) = 90g (Rolled Oats)
3 Full Cups + Remainder
1 Cup¾½¼
Cross-Unit Equivalent Strip
Tablespoons60.4 tbsp
Teaspoons181.3 tsp
Ounces11.99 oz
Millilitres893.8 ml
Butter SticksN/A
Pounds0.75 lbs
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Cross-Unit Conversion Table for 340g Rolled Oats (Old-Fashioned)

Complete measurement equivalents for 340 grams of rolled oats (old-fashioned) across standard kitchen units.

Cross-Unit Conversion Table for 340g Rolled Oats (Old-Fashioned)
Measurement UnitConverted ValueConversion Basis
US Customary Cups3.78 cups (3 cups + 12 tablespoons + 1¼ teaspoons)236.588 ml / cup (90g/cup default)
US Legal Cups3.72 cups240 ml nutrition label basis
Metric Cups3.58 cups250 ml international standard
US Tablespoons60.4 tbsp16 tbsp per US cup
US Teaspoons181.3 tsp48 tsp per US cup
Ounces Weight11.99 oz28.3495 grams per dry oz
Fluid Volume (ml)893.8 mlDensity: 0.3804 g/ml
Pounds (lbs)0.750 lbs453.592 grams per lb

Recipe Context: Measuring 340g of Rolled Oats (Old-Fashioned)

340 grams of rolled oats (old-fashioned) measures to 3.78 cups (3 cups + 12 tablespoons + 1¼ teaspoons).

Scoop into cup and level gently.

Related Weight & Ingredient Navigation

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Frequently Asked Questions: 340g Rolled Oats (Old-Fashioned)

How many cups is 340 grams of rolled oats (old-fashioned)?

340 grams of rolled oats (old-fashioned) equals 3.78 cups (3 cups + 12 tablespoons + 1¼ teaspoons), based on a reference density of 90 grams per US customary cup. This is equivalent to 3 cups + 12 tablespoons + 1¼ teaspoons.

Is 340g of rolled oats (old-fashioned) equal to 4 cups?

340 grams of rolled oats (old-fashioned) equals 3.78 cups, which differs from 4 cups by 20 grams. The practical breakdown is 3 cups + 12 tablespoons + 1¼ teaspoons.

Should I measure 340g of rolled oats (old-fashioned) by weight or volume?

Measuring 340 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.