Sea Salt: Sodium, Iodine and Measured Portions

Sea Salt

2 g

Calculation basis: ANSES Ciqual 2025 record 11082, pure unfortified sea salt, 37700 mg sodium/100 g. Iodine and vitamin A activity are unreported.

Calculated from the 100 g values. — means unknown, not zero. ~ indicates an estimated serving weight.

0kcal

Carbohydrate0 g —

Protein0 g —

Fat0 g —

Sea Salt Nutrition Values

Nutrients	100 g	1 Weighed amount (2 g)
Calories(kcal)	0	0
Carbohydrate (g)	0	0
Protein (g)	0	0
Fat (g)	0	0
Fiber (g)	0	0
Cholesterol (mg)	0	0
Sodium (mg)	37700	754
Potassium (mg)	103	2.06
Calcium (mg)	171	3.42

Values are calculated from a 100 g basis. The product, recipe and serving amount can change the result. See the food-specific notes below for the reference used.

How much sodium is in a gram of sea salt?

The ANSES Ciqual reference for pure, unfortified sea salt contains 377 mg sodium per gram. A weighed 2 g provides 754 mg and 5 g provides 1885 mg. It has 0 calories, but being calorie-free does not make the amount unimportant: sodium is the main consideration.

Why compare grams rather than spoonfuls?

Coarse crystals leave different spaces in a spoon from finely ground salt. Equal spoon volumes may therefore have different weights. Weighing the salt makes the comparison clearer; this page does not assign one universal weight to a teaspoon.

For example, adding 2 g of this salt to a dish divided into four equal servings contributes about 189 mg sodium per serving from the added salt alone. Cheese, stock, tomato paste and other ingredients may supply more. The amount taken from the salt jar is not the total salt in the meal. The explanation of total salt from food shows how bread, cheese and prepared sauces contribute to the same daily total.

Is sea salt healthier, and does it contain iodine?

Sea salt differs in origin and crystal texture, but its marine origin does not remove the effects of sodium. The World Health Organization recommends adults consume less than 2,000 mg sodium daily. That covers all food sources, not an allowance to add separately at the table.

Check for “iodized” on the package if iodine is the question. Sea salt is not automatically a dependable iodine source. The NIH iodine guide notes that specialty salts are usually not iodized. Iodine was not measured in this reference entry, so its amount remains unknown rather than being entered as zero.

What about its calcium and magnesium?

The source reports 171 mg calcium and 424 mg magnesium per 100 g. At a more relevant kitchen amount of 1 g, those become just 1.71 mg calcium and 4.24 mg magnesium. Increasing salt to obtain these minerals would bring considerably more sodium with them.

Values come from Ciqual 2025 record 11082, not laboratory results for every brand of sea salt. Iodized products, potassium salt blends and seasoned salts require their own labels.