One gram of kosher salt is 0.98578432 millilitres, so converting grams of kosher salt to millilitres means multiplying by 0.98578432. That factor is specific to this ingredient — it comes from its density, not from any relationship between the two units.
The density behind that figure is 1.0144 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of kosher salt weighs 240 g, so this ingredient is 101.4% as heavy as the same volume of water — the single fact the whole page rests on.
Kosher salt has a density of 1.0144 g per mL, so 100 mL of it weighs 101.4 g and 250 mL weighs 253.6 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 101.4% 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 0.417% of a cup of kosher salt, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 2.083 cups, and a 1 kg pack 4.167.
How the figure is arrived at: Flake size differs between brands by nearly a factor of two, which makes this the most variable figure on the site. Weigh it when it matters.
The formula
grams- The amount of kosher salt you are converting, in grams
0.98578431875- Millilitres per gram for kosher salt, from its density of 1.0144 g/mL
millilitres- The equivalent quantity in millilitres
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 0.98578431875, the millilitres-per-gram figure for kosher salt.
- 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 kosher salt in millilitres
50 g of kosher salt weighs out at 49.2892 millilitres. Divide 49.2892 by 0.98578432 and you get back to 50 g, which is the quickest check that the factor is the right way up.
150 g of kosher salt in millilitres
A recipe calling for 150 g of kosher salt needs 147.868 millilitres on the scale. The arithmetic is 150 × 0.98578432 = 147.86765, and halving the recipe halves the weight to 73.9338 millilitres.
500 g of kosher salt in millilitres
500 g of kosher salt weighs out at 492.892 millilitres. Divide 492.892 by 0.98578432 and you get back to 500 g, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many millilitres are in 1 g of kosher salt?
One gram of kosher salt is 0.98578432 millilitres. Half that quantity is 0.492892 millilitres and double it is 1.97157 millilitres, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of kosher salt not 236 g like water?
Because weight per cup depends on what is in the cup. Kosher salt has a density of 1.0144 g per mL where water has 1.00, so a cup of it weighs 240 g rather than 236.6 g. That is a difference of 3.4 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 kosher salt by roughly 20% — about 24 g either side of 240 g — because flake size differs between brands by nearly a factor of two, which makes this the most variable figure on the site. Weighing removes the question entirely.
Is a fluid ounce of kosher salt 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 kosher salt weighs 1.058 oz, so the two readings differ by 5.82%. 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 kosher salt would weigh 253.61 g instead of 240 g — 13.6 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 kosher salt is 1.014 g, and a scale reading to the nearest gram is working at 98.6% 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 kosher salt weigh?
15 mL of kosher salt comes to 15.216 g, or 15.216 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.
Kosher salt in grams and millilitres
| Grams | Millilitres | Unrounded |
|---|---|---|
| 5 g | 4.92892 mL | 4.928921594 |
| 10 g | 9.85784 mL | 9.857843187 |
| 25 g | 24.6446 mL | 24.64460797 |
| 50 g | 49.2892 mL | 49.28921594 |
| 100 g | 98.5784 mL | 98.57843187 |
| 125 g | 123.223 mL | 123.2230398 |
| 150 g | 147.868 mL | 147.8676478 |
| 200 g | 197.157 mL | 197.1568637 |
| 250 g | 246.446 mL | 246.4460797 |
| 300 g | 295.735 mL | 295.7352956 |
| 500 g | 492.892 mL | 492.8921594 |
| 1000 g | 985.784 mL | 985.7843187 |
Based on 240 g per cup of kosher salt. One gram of kosher salt is 0.98578432 millilitres.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 240 g | 8.47 oz | 236.6 mL |
| 1 tbsp | 15 g | 0.529 oz | 14.79 mL |
| 2 tsp | 10 g | 0.353 oz | 9.858 mL |
| 1 tsp | 5 g | 0.176 oz | 4.929 mL |
| 3/4 tsp | 3.75 g | 0.132 oz | 3.697 mL |
| 1/2 tsp | 2.5 g | 0.0882 oz | 2.464 mL |
| 1/4 tsp | 1.25 g | 0.0441 oz | 1.232 mL |
| 1/8 tsp | 0.625 g | 0.022 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) |
|---|---|---|---|
| Ground turmeric | 144 g | 5.079 oz | 0.6087 |
| Powdered gelatin | 150 g | 5.291 oz | 0.634 |
| Baking powder | 192 g | 6.773 oz | 0.8115 |
| Vanilla extract | 202 g | 7.125 oz | 0.8538 |
| Kosher salt (this page) | 240 g | 8.466 oz | 1.014 |
| Table salt | 288 g | 10.16 oz | 1.217 |
| Baking soda | 288 g | 10.16 oz | 1.217 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.