One millilitre of tapioca starch is 0.50721034 grams, so converting millilitres of tapioca starch to grams means multiplying by 0.50721034. That factor is specific to this ingredient — it comes from its density, not from any relationship between the two units.
Put next to water — 1 g per mL exactly — tapioca starch measures 0.50721 g per mL. That ratio, 50.72%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
Tapioca starch has a density of 0.50721 g per mL, so 100 mL of it weighs 50.72 g and 250 mL weighs 126.8 g. That single figure is what every other number on this page is built from — water is 1.00 g per mL, so this ingredient is 50.72% as heavy as the same volume of water.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 0.833% of a cup of tapioca starch, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 4.167 cups, and a 1 kg pack 8.333.
What the number depends on: Sold as tapioca flour as well — the same thing under two names, which is worth knowing before buying both.
The formula
millilitres- The amount of tapioca starch you are converting, in millilitres
0.507210340528- Grams per millilitre for tapioca starch, from its density of 0.50721 g/mL
grams- The equivalent quantity in grams
How it works, step by step
- Enter the quantity in millilitres.
- It is multiplied by 0.507210340528, the grams-per-millilitre figure for tapioca starch.
- 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
15 mL of tapioca starch in grams
15 mL of tapioca starch weighs out at 7.60816 grams. Divide 7.60816 by 0.50721034 and you get back to 15 mL, which is the quickest check that the factor is the right way up.
100 mL of tapioca starch in grams
A recipe calling for 100 mL of tapioca starch needs 50.721 grams on the scale. The arithmetic is 100 × 0.50721034 = 50.721034, and halving the recipe halves the weight to 25.3605 grams.
250 mL of tapioca starch in grams
A recipe calling for 250 mL of tapioca starch needs 126.803 grams on the scale. The arithmetic is 250 × 0.50721034 = 126.80259, and halving the recipe halves the weight to 63.4013 grams.
How to read your score
Frequently asked questions
How many grams are in 1 mL of tapioca starch?
One millilitre of tapioca starch is 0.50721034 grams. Half that quantity is 0.253605 grams and double it is 1.01442 grams, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of tapioca starch not 236 g like water?
Because weight per cup depends on what is in the cup. Tapioca starch has a density of 0.50721 g per mL where water has 1.00, so a cup of it weighs 120 g rather than 236.6 g. That is a difference of 116.6 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 tapioca starch by roughly 20% — about 12 g either side of 120 g — because sold as tapioca flour as well — the same thing under two names, which is worth knowing before buying both. Weighing removes the question entirely.
Is a fluid ounce of tapioca starch 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 tapioca starch weighs 0.5291 oz, so the two readings differ by 47.1%. 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 tapioca starch would weigh 126.8 g instead of 120 g — 6.8 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 millilitre of tapioca starch is 0.5072 g, and a scale reading to the nearest gram is working at 197% 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 millilitres of tapioca starch is 500 g?
500 g of tapioca starch is 985.78 millilitres — 1.97157 millilitres to one gram, so 500 × 1.97157 = 985.78. Going that way is a division by 0.50721, or a multiplication by 1.97157 if you prefer.
Tapioca starch in millilitres and grams
| Millilitres | Grams | Unrounded |
|---|---|---|
| 5 mL | 2.53605 g | 2.536051703 |
| 10 mL | 5.0721 g | 5.072103405 |
| 15 mL | 7.60816 g | 7.608155108 |
| 30 mL | 15.2163 g | 15.21631022 |
| 50 mL | 25.3605 g | 25.36051703 |
| 100 mL | 50.721 g | 50.72103405 |
| 125 mL | 63.4013 g | 63.40129257 |
| 150 mL | 76.0816 g | 76.08155108 |
| 200 mL | 101.442 g | 101.4420681 |
| 250 mL | 126.803 g | 126.8025851 |
| 500 mL | 253.605 g | 253.6051703 |
Based on 120 g per cup of tapioca starch. One millilitre of tapioca starch is 0.50721034 grams.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 120 g | 4.23 oz | 236.6 mL |
| 3/4 cup | 90 g | 3.17 oz | 177.4 mL |
| 2/3 cup | 80 g | 2.82 oz | 157.7 mL |
| 1/2 cup | 60 g | 2.12 oz | 118.3 mL |
| 1/3 cup | 40 g | 1.41 oz | 78.86 mL |
| 1/4 cup | 30 g | 1.06 oz | 59.15 mL |
| 1 tbsp | 7.5 g | 0.265 oz | 14.79 mL |
| 1 tsp | 2.5 g | 0.0882 oz | 4.929 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) |
|---|---|---|---|
| Coconut flour | 112 g | 3.951 oz | 0.4734 |
| Cake flour | 114 g | 4.021 oz | 0.4818 |
| Whole wheat flour | 120 g | 4.233 oz | 0.5072 |
| Tapioca starch (this page) | 120 g | 4.233 oz | 0.5072 |
| Powdered sugar | 120 g | 4.233 oz | 0.5072 |
| All-purpose flour | 125 g | 4.409 oz | 0.5283 |
| Self-rising flour | 125 g | 4.409 oz | 0.5283 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.