To convert grams of rolled oats into teaspoons, multiply by 0.53333333: one gram comes to 0.53333333 teaspoons. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
Put next to water — 1 g per mL exactly — rolled oats measures 0.38041 g per mL. That ratio, 38.04%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
A level teaspoon of rolled oats weighs 1.875 g. A kitchen scale that reads to the nearest gram is therefore working at roughly 53.3% resolution on a single spoonful, which is why measuring spoons beat scales below about 5 g and lose to them above it. Three teaspoons make a tablespoon, so the same spoonful is 5.625 g if the recipe scales up.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 1.11% of a cup of rolled oats, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 5.556 cups, and a 1 kg pack 11.11.
The condition this weight assumes: Old-fashioned flakes. Very light for their volume because of the air trapped between them.
The formula
grams- The amount of rolled oats you are converting, in grams
0.533333333333- Teaspoons per gram for rolled oats, from its density of 0.38041 g/mL
teaspoons- The equivalent quantity in teaspoons
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 0.533333333333, the teaspoons-per-gram figure for rolled oats.
- The result appears in teaspoons, with a second reading in mL beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
50 g of rolled oats in teaspoons
A recipe calling for 50 g of rolled oats needs 26.6667 teaspoons on the scale. The arithmetic is 50 × 0.53333333 = 26.666667, and halving the recipe halves the weight to 13.3333 teaspoons.
150 g of rolled oats in teaspoons
A recipe calling for 150 g of rolled oats needs 80 teaspoons on the scale. The arithmetic is 150 × 0.53333333 = 80, and halving the recipe halves the weight to 40 teaspoons.
500 g of rolled oats in teaspoons
A recipe calling for 500 g of rolled oats needs 266.667 teaspoons on the scale. The arithmetic is 500 × 0.53333333 = 266.66667, and halving the recipe halves the weight to 133.333 teaspoons.
How to read your score
Frequently asked questions
How many teaspoons are in 1 g of rolled oats?
One gram of rolled oats is 0.53333333 teaspoons. Half that quantity is 0.266667 teaspoons and double it is 1.06667 teaspoons, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of rolled oats not 236 g like water?
Because weight per cup depends on what is in the cup. Rolled oats has a density of 0.38041 g per mL where water has 1.00, so a cup of it weighs 90 g rather than 236.6 g. That is a difference of 146.6 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Yes, and by more than most people expect. Handling changes the weight of a cup of rolled oats by roughly 20% — about 9 g either side of 90 g — because old-fashioned flakes. Weighing removes the question entirely.
Is a fluid ounce of rolled oats the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of rolled oats weighs 0.3968 oz, so the two readings differ by 60.3%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of rolled oats would weigh 95.102 g instead of 90 g — 5.1 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
At this size the spoon wins. One teaspoon of rolled oats is 1.875 g, and a scale reading to the nearest gram is working at 53.3% resolution on that — a measuring spoon is the more accurate instrument below about 5 g, which is why spice quantities are still written in spoons.
How much does 2 tsp of rolled oats weigh?
2 tsp of rolled oats comes to 3.75 g, or 3.75 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the teaspoons-to-grams page does it in the direction the question is usually asked.
Rolled oats in grams and teaspoons
| Grams | Teaspoons | Unrounded |
|---|---|---|
| 5 g | 2.66667 tsp | 2.666666667 |
| 10 g | 5.33333 tsp | 5.333333333 |
| 25 g | 13.3333 tsp | 13.33333333 |
| 50 g | 26.6667 tsp | 26.66666667 |
| 100 g | 53.3333 tsp | 53.33333333 |
| 125 g | 66.6667 tsp | 66.66666667 |
| 150 g | 80 tsp | 80 |
| 200 g | 106.667 tsp | 106.6666667 |
| 250 g | 133.333 tsp | 133.3333333 |
| 300 g | 160 tsp | 160 |
| 500 g | 266.667 tsp | 266.6666667 |
| 1000 g | 533.333 tsp | 533.3333333 |
Based on 90 g per cup of rolled oats. One gram of rolled oats is 0.53333333 teaspoons.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 90 g | 3.17 oz | 236.6 mL |
| 1 tbsp | 5.625 g | 0.198 oz | 14.79 mL |
| 2 tsp | 3.75 g | 0.132 oz | 9.858 mL |
| 1 tsp | 1.875 g | 0.0661 oz | 4.929 mL |
| 3/4 tsp | 1.406 g | 0.0496 oz | 3.697 mL |
| 1/2 tsp | 0.9375 g | 0.0331 oz | 2.464 mL |
| 1/4 tsp | 0.4688 g | 0.0165 oz | 1.232 mL |
| 1/8 tsp | 0.2344 g | 0.00827 oz | 0.6161 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Panko breadcrumbs | 60 g | 2.116 oz | 0.2536 |
| Cocoa powder | 85 g | 2.998 oz | 0.3593 |
| Rolled oats (this page) | 90 g | 3.175 oz | 0.3804 |
| Oat flour | 92 g | 3.245 oz | 0.3889 |
| Almond flour | 96 g | 3.386 oz | 0.4058 |
| Rye flour | 102 g | 3.598 oz | 0.4311 |
| Dry breadcrumbs | 108 g | 3.81 oz | 0.4565 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.