Salt vs sodium: what's the difference?
Table salt is sodium chloride (NaCl). Sodium makes up approximately 39.3% of salt by weight, with chloride making up the remaining 60.7%. A teaspoon of table salt (about 5.7 g) contains approximately 2,240 mg of sodium — close to the US Daily Value of 2,300 mg.
Food labels in most countries list sodium content, not salt. To convert sodium on a food label back to the equivalent salt weight, divide by 0.393 (or multiply sodium in grams by 2.54). Many people significantly underestimate their sodium intake because they do not account for sodium naturally present in foods or added during processing.