Teaspoons of rice flour to grams runs on one number, 3.2916667 grams per teaspoon. It is a measured property of this ingredient rather than a defined conversion, which is why a generic volume-to-weight tool cannot give you it.
The density behind that figure is 0.66783 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of rice flour weighs 158 g, so this ingredient is 66.78% as heavy as the same volume of water — the single fact the whole page rests on.
A level teaspoon of rice flour weighs 3.292 g. A kitchen scale that reads to the nearest gram is therefore working at roughly 30.4% 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 9.875 g if the recipe scales up.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 0.633% of a cup of rice flour, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 3.165 cups, and a 1 kg pack 6.329.
What the number depends on: Fine, dense and gluten-free. Common in gluten-free blends and in tempura and rice-noodle batters.
The formula
teaspoons- The amount of rice flour you are converting, in teaspoons
3.29166666667- Grams per teaspoon for rice flour, from its density of 0.66783 g/mL
grams- The equivalent quantity in grams
How it works, step by step
- Enter the quantity in teaspoons.
- It is multiplied by 3.29166666667, the grams-per-teaspoon figure for rice flour.
- The result appears in grams, with a second reading in oz beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
3/4 tsp of rice flour in grams
Take 3/4 tsp of rice flour: 0.75 × 3.2916667 gives 2.46875 grams. Doubling the batch takes it to 4.9375 grams, because the relationship is a straight proportion once the density is known.
1 1/2 tsp of rice flour in grams
1 1/2 tsp of rice flour weighs out at 4.9375 grams. Divide 4.9375 by 3.2916667 and you get back to 1 1/2 tsp, which is the quickest check that the factor is the right way up.
4 tsp of rice flour in grams
4 tsp of rice flour weighs out at 13.1667 grams. Divide 13.1667 by 3.2916667 and you get back to 4 tsp, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many grams are in 1 tsp of rice flour?
One teaspoon of rice flour is 3.2916667 grams. Half that quantity is 1.64583 grams and double it is 6.58333 grams, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of rice flour not 236 g like water?
Because weight per cup depends on what is in the cup. Rice flour has a density of 0.66783 g per mL where water has 1.00, so a cup of it weighs 158 g rather than 236.6 g. That is a difference of 78.6 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 rice flour by roughly 20% — about 15.8 g either side of 158 g — because fine, dense and gluten-free. Weighing removes the question entirely.
Is a fluid ounce of rice 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 rice flour weighs 0.6967 oz, so the two readings differ by 30.3%. 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 rice flour would weigh 166.96 g instead of 158 g — 8.96 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 rice flour is 3.292 g, and a scale reading to the nearest gram is working at 30.4% 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 many teaspoons of rice flour is 500 g?
500 g of rice flour is 151.9 teaspoons — 0.303797 teaspoons to one gram, so 500 × 0.303797 = 151.9. Going that way is a division by 3.29167, or a multiplication by 0.303797 if you prefer.
Rice flour in teaspoons and grams
| Teaspoons | Grams | Unrounded |
|---|---|---|
| 1/4 tsp | 0.822917 g | 0.8229166667 |
| 1/2 tsp | 1.64583 g | 1.645833333 |
| 3/4 tsp | 2.46875 g | 2.46875 |
| 1 tsp | 3.29167 g | 3.291666667 |
| 1 1/2 tsp | 4.9375 g | 4.9375 |
| 2 tsp | 6.58333 g | 6.583333333 |
| 3 tsp | 9.875 g | 9.875 |
| 4 tsp | 13.1667 g | 13.16666667 |
| 6 tsp | 19.75 g | 19.75 |
Based on 158 g per cup of rice flour. One teaspoon of rice flour is 3.2916667 grams.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 158 g | 5.57 oz | 236.6 mL |
| 1 tbsp | 9.875 g | 0.348 oz | 14.79 mL |
| 2 tsp | 6.583 g | 0.232 oz | 9.858 mL |
| 1 tsp | 3.292 g | 0.116 oz | 4.929 mL |
| 3/4 tsp | 2.469 g | 0.0871 oz | 3.697 mL |
| 1/2 tsp | 1.646 g | 0.0581 oz | 2.464 mL |
| 1/4 tsp | 0.8229 g | 0.029 oz | 1.232 mL |
| 1/8 tsp | 0.4115 g | 0.0145 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) |
|---|---|---|---|
| Cornstarch | 128 g | 4.515 oz | 0.541 |
| Cornmeal | 138 g | 4.868 oz | 0.5833 |
| Graham cracker crumbs | 142 g | 5.009 oz | 0.6002 |
| Rice flour (this page) | 158 g | 5.573 oz | 0.6678 |
| Potato starch | 160 g | 5.644 oz | 0.6763 |
| Steel-cut oats | 160 g | 5.644 oz | 0.6763 |
| Semolina | 167 g | 5.891 oz | 0.7059 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.