One gram of oat flour is 0.17391304 tablespoons, so converting grams of oat flour to tablespoons means multiplying by 0.17391304. That factor is specific to this ingredient — it comes from its density, not from any relationship between the two units.
Water is the yardstick: 1 mL of it weighs 1 g. Oat flour comes in at 0.38886 g per mL, or 38.89% of water, which is why a cup of it is 92 g rather than 236.6 g. Volume and weight only line up for water, and only in metric.
A level tablespoon of oat flour is 5.75 g, which puts a teaspoon at 1.917 g and a tablespoon and a half — the quantity recipes are fondest of — at 8.625 g. Levelling twice is where the error comes from, so the scale is the faster instrument once the quantity passes a couple of spoons.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 1.09% of a cup of oat flour, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 5.435 cups, and a 1 kg pack 10.87.
The condition this weight assumes: Ground rolled oats, and almost as light per cup as the flakes it came from.
The formula
grams- The amount of oat flour you are converting, in grams
0.173913043478- Tablespoons per gram for oat flour, from its density of 0.38886 g/mL
tablespoons- The equivalent quantity in tablespoons
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 0.173913043478, the tablespoons-per-gram figure for oat flour.
- The result appears in tablespoons, with a second reading in tsp 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 oat flour in tablespoons
50 g of oat flour weighs out at 8.69565 tablespoons. Divide 8.69565 by 0.17391304 and you get back to 50 g, which is the quickest check that the factor is the right way up.
150 g of oat flour in tablespoons
Take 150 g of oat flour: 150 × 0.17391304 gives 26.087 tablespoons. Doubling the batch takes it to 52.1739 tablespoons, because the relationship is a straight proportion once the density is known.
500 g of oat flour in tablespoons
A recipe calling for 500 g of oat flour needs 86.9565 tablespoons on the scale. The arithmetic is 500 × 0.17391304 = 86.956522, and halving the recipe halves the weight to 43.4783 tablespoons.
How to read your score
Frequently asked questions
How many tablespoons are in 1 g of oat flour?
One gram of oat flour is 0.17391304 tablespoons. Half that quantity is 0.0869565 tablespoons and double it is 0.347826 tablespoons, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of oat flour not 236 g like water?
Because weight per cup depends on what is in the cup. Oat flour has a density of 0.38886 g per mL where water has 1.00, so a cup of it weighs 92 g rather than 236.6 g. That is a difference of 144.6 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 oat flour by roughly 20% — about 9.2 g either side of 92 g — because ground rolled oats, and almost as light per cup as the flakes it came from. Weighing removes the question entirely.
Is a fluid ounce of oat flour 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 oat flour weighs 0.4057 oz, so the two readings differ by 59.4%. 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 oat flour would weigh 97.215 g instead of 92 g — 5.22 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 tablespoon of oat flour is 5.75 g, and a scale reading to the nearest gram is working at 17.4% 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 3 tbsp of oat flour weigh?
3 tbsp of oat flour comes to 17.25 g, or 17.25 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the tablespoons-to-grams page does it in the direction the question is usually asked.
Oat flour in grams and tablespoons
| Grams | Tablespoons | Unrounded |
|---|---|---|
| 5 g | 0.869565 tbsp | 0.8695652174 |
| 10 g | 1.73913 tbsp | 1.739130435 |
| 25 g | 4.34783 tbsp | 4.347826087 |
| 50 g | 8.69565 tbsp | 8.695652174 |
| 100 g | 17.3913 tbsp | 17.39130435 |
| 125 g | 21.7391 tbsp | 21.73913043 |
| 150 g | 26.087 tbsp | 26.08695652 |
| 200 g | 34.7826 tbsp | 34.7826087 |
| 250 g | 43.4783 tbsp | 43.47826087 |
| 300 g | 52.1739 tbsp | 52.17391304 |
| 500 g | 86.9565 tbsp | 86.95652174 |
| 1000 g | 173.913 tbsp | 173.9130435 |
Based on 92 g per cup of oat flour. One gram of oat flour is 0.17391304 tablespoons.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 92 g | 3.25 oz | 236.6 mL |
| 1 tbsp | 5.75 g | 0.203 oz | 14.79 mL |
| 2 tsp | 3.833 g | 0.135 oz | 9.858 mL |
| 1 tsp | 1.917 g | 0.0676 oz | 4.929 mL |
| 3/4 tsp | 1.438 g | 0.0507 oz | 3.697 mL |
| 1/2 tsp | 0.9583 g | 0.0338 oz | 2.464 mL |
| 1/4 tsp | 0.4792 g | 0.0169 oz | 1.232 mL |
| 1/8 tsp | 0.2396 g | 0.00845 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 | 90 g | 3.175 oz | 0.3804 |
| Oat flour (this page) | 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.