To convert grams of sunflower seeds into millilitres, multiply by 1.689916: one gram comes to 1.689916 millilitres. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
The density behind that figure is 0.59175 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of sunflower seeds weighs 140 g, so this ingredient is 59.17% as heavy as the same volume of water — the single fact the whole page rests on.
Sunflower seeds has a density of 0.59175 g per mL, so 100 mL of it weighs 59.17 g and 250 mL weighs 147.9 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 59.17% 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 0.714% of a cup of sunflower seeds, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 3.571 cups, and a 1 kg pack 7.143.
How the figure is arrived at: Hulled kernels, not the striped whole seeds sold as bird food — the whole seed is mostly hull and weighs far less per cup, which is the difference that trips up bulk-bin shopping.
The formula
grams- The amount of sunflower seeds you are converting, in grams
1.689915975- Millilitres per gram for sunflower seeds, from its density of 0.59175 g/mL
millilitres- The equivalent quantity in millilitres
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 1.689915975, the millilitres-per-gram figure for sunflower seeds.
- The result appears in millilitres, 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 sunflower seeds in millilitres
A recipe calling for 50 g of sunflower seeds needs 84.4958 millilitres on the scale. The arithmetic is 50 × 1.689916 = 84.495799, and halving the recipe halves the weight to 42.2479 millilitres.
150 g of sunflower seeds in millilitres
Take 150 g of sunflower seeds: 150 × 1.689916 gives 253.487 millilitres. Doubling the batch takes it to 506.975 millilitres, because the relationship is a straight proportion once the density is known.
500 g of sunflower seeds in millilitres
500 g of sunflower seeds weighs out at 844.958 millilitres. Divide 844.958 by 1.689916 and you get back to 500 g, which is the quickest check that the factor is the right way up.
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Frequently asked questions
How many millilitres are in 1 g of sunflower seeds?
One gram of sunflower seeds is 1.689916 millilitres. Half that quantity is 0.844958 millilitres and double it is 3.37983 millilitres, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of sunflower seeds not 236 g like water?
Because weight per cup depends on what is in the cup. Sunflower seeds has a density of 0.59175 g per mL where water has 1.00, so a cup of it weighs 140 g rather than 236.6 g. That is a difference of 96.6 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 sunflower seeds by roughly 12% — about 8.4 g either side of 140 g — because hulled kernels, not the striped whole seeds sold as bird food — the whole seed is mostly hull and weighs far less per cup, which is the difference that trips up bulk-bin shopping. Weighing removes the question entirely.
Is a fluid ounce of sunflower seeds 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 sunflower seeds weighs 0.6173 oz, so the two readings differ by 38.3%. 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 sunflower seeds would weigh 147.94 g instead of 140 g — 7.94 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 sunflower seeds is 0.5917 g, and a scale reading to the nearest gram is working at 169% 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 15 mL of sunflower seeds weigh?
15 mL of sunflower seeds comes to 8.8762 g, or 8.8762 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the ml-to-grams page does it in the direction the question is usually asked.
Sunflower seeds in grams and millilitres
| Grams | Millilitres | Unrounded |
|---|---|---|
| 5 g | 8.44958 mL | 8.449579875 |
| 10 g | 16.8992 mL | 16.89915975 |
| 25 g | 42.2479 mL | 42.24789937 |
| 50 g | 84.4958 mL | 84.49579875 |
| 100 g | 168.992 mL | 168.9915975 |
| 125 g | 211.239 mL | 211.2394969 |
| 150 g | 253.487 mL | 253.4873962 |
| 200 g | 337.983 mL | 337.983195 |
| 250 g | 422.479 mL | 422.4789937 |
| 300 g | 506.975 mL | 506.9747925 |
| 500 g | 844.958 mL | 844.9579875 |
| 1000 g | 1689.92 mL | 1689.915975 |
Based on 140 g per cup of sunflower seeds. One gram of sunflower seeds is 1.689916 millilitres.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 140 g | 4.94 oz | 236.6 mL |
| 3/4 cup | 105 g | 3.7 oz | 177.4 mL |
| 2/3 cup | 93.33 g | 3.29 oz | 157.7 mL |
| 1/2 cup | 70 g | 2.47 oz | 118.3 mL |
| 1/3 cup | 46.67 g | 1.65 oz | 78.86 mL |
| 1/4 cup | 35 g | 1.23 oz | 59.15 mL |
| 1 tbsp | 8.75 g | 0.309 oz | 14.79 mL |
| 1 tsp | 2.917 g | 0.103 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) |
|---|---|---|---|
| Pumpkin seeds | 130 g | 4.586 oz | 0.5495 |
| Frozen peas | 135 g | 4.762 oz | 0.5706 |
| Cashews | 140 g | 4.938 oz | 0.5917 |
| Sunflower seeds (this page) | 140 g | 4.938 oz | 0.5917 |
| Whole almonds | 142 g | 5.009 oz | 0.6002 |
| Sesame seeds | 144 g | 5.079 oz | 0.6087 |
| Raisins | 145 g | 5.115 oz | 0.6129 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.