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BIPM-ratified constants · v1.0

Converter

Sodium, in salt calculator.

Convert salt to sodium or sodium to salt using the standard NaCl molecular weight formula. Supports milligrams and grams for precise dietary tracking.

From

milligrams

mg

1000 mg =393.3747Converted Amount

Equivalents

Precision: 6 dp · Notation: Decimal · 2 units

→ Sodium

Saltsalt_to_sodium393.3747

→ Salt

Sodiumsodium_to_salt2,542

Common pairings

1 mgequals0.393375 salt_to_sodium
1 mgequals2.5421 sodium_to_salt
1 gequals393.3747 salt_to_sodium
1 gequals2,542 sodium_to_salt
1 tspequals2,238 salt_to_sodium
1 tspequals14,465 sodium_to_salt
1 ozequals11,152 salt_to_sodium
1 ozequals72,067 sodium_to_salt

The conversion

How the value
is computed.

How the Sodium in Salt Calculator Works

Table salt — chemically known as sodium chloride (NaCl) — consists of two elements bonded at a fixed atomic ratio: sodium (Na) and chloride (Cl). Because this ratio never changes, the mass of sodium within any given amount of salt is always predictable and calculable. The sodium in salt converter applies this precise chemical relationship to deliver instant, bidirectional conversions between salt and sodium in milligrams or grams.

The Core Conversion Formula

Converting between salt and sodium relies on the molecular weights of each component:

  • Sodium (Na): 22.99 g/mol
  • Chloride (Cl): 35.45 g/mol
  • Sodium Chloride (NaCl): 22.99 + 35.45 = 58.44 g/mol

The mass fraction of sodium in salt is therefore: 22.99 / 58.44 = 0.3933, meaning sodium accounts for exactly 39.33% of table salt by weight. The primary formula is:

Sodium (mg) = Salt (mg) x 0.3933

To reverse the calculation — finding the salt equivalent of a known sodium amount — divide by the same factor:

Salt (mg) = Sodium (mg) / 0.3933 = Sodium (mg) x 2.5423

Worked Examples

Example 1: One Teaspoon of Table Salt

One level teaspoon of table salt weighs approximately 5,750 mg. Applying the formula: 5,750 x 0.3933 = 2,262 mg of sodium. This single teaspoon delivers nearly the full recommended daily ceiling of 2,300 mg for adults, illustrating how quickly sodium accumulates through cooking and seasoning alone.

Example 2: Packaged Frozen Meal

A typical frozen entree lists 950 mg of sodium per serving on its nutrition label. The equivalent salt content: 950 / 0.3933 = 2,415 mg of salt (approximately 2.4 grams). Knowing this helps consumers understand how a single serving can exceed an entire day's recommended salt intake.

Example 3: Recipe Sodium Calculation

A recipe calling for 2 grams of salt (2,000 mg) delivers: 2,000 x 0.3933 = 786.6 mg of sodium. This represents about one-third of the 2,300 mg daily upper limit — a critical figure for anyone managing hypertension or following a physician-recommended low-sodium diet.

Why This Conversion Matters

Nutrition labels follow different regional conventions. In the United States and Canada, labels list sodium in milligrams. In the United Kingdom, Australia, and much of Europe, labels often report salt in grams. Without a reliable sodium in salt converter, comparing products across countries or verifying dietary totals becomes error-prone and time-consuming. Research published in PMC: Estimation of Sodium Consumption by Novel Formulas underscores the importance of precise sodium quantification for both clinical practice and population-level dietary surveillance.

Daily Sodium Intake Reference Values

According to the USDA DRI Calculator for Healthcare Professionals, the Adequate Intake (AI) for sodium is 1,500 mg per day for adults aged 19 to 50, while the Tolerable Upper Intake Level (UL) is 2,300 mg per day. Applying the reverse formula, 2,300 mg of sodium equals approximately 5,850 mg — roughly one level teaspoon — of table salt. Chronic sodium intake above this threshold is strongly associated with elevated blood pressure, increased stroke risk, and greater cardiovascular disease burden.

Calculator Variables Explained

  • Amount to Convert: The numeric quantity of salt or sodium to be processed — any positive number in milligrams or grams.
  • Input Unit: Select milligrams (mg) or grams (g) to match the source measurement on the label or recipe.
  • Conversion Direction: Choose salt to sodium or sodium to salt depending on which quantity is already known.
  • Output Unit: Select the preferred unit (mg or g) for the resulting converted value.

Common Use Cases

  • Comparing nutrition labels printed under different international standards
  • Calculating actual sodium content in home recipes that measure salt by weight
  • Monitoring daily sodium intake for hypertension, kidney disease, or heart failure management
  • Verifying sodium claims on packaged, processed, and restaurant foods
  • Supporting registered dietitians and healthcare professionals in patient counseling and meal planning

Reference

Frequently asked questions

How much sodium is in 1 gram of salt?
One gram of table salt (sodium chloride, NaCl) contains exactly 393.3 mg of sodium. This figure derives from the molecular weight ratio: sodium constitutes 39.33% of NaCl by mass (22.99 g/mol divided by 58.44 g/mol). For dietary tracking, many sources round this to approximately 400 mg of sodium per gram of salt, but the scientifically precise value is 393.3 mg for accurate nutrition calculations and label comparisons.
What is the difference between salt and sodium?
Salt refers to the compound sodium chloride (NaCl), the crystalline substance used in cooking and food preservation. Sodium is one of the two chemical elements that make up salt, accounting for 39.33% of its mass by weight. Most U.S. nutrition labels list sodium content in milligrams rather than total salt, which is why a sodium in salt converter is essential when comparing products from different countries or following recipes that measure salt by weight.
How much sodium should an adult consume per day?
The USDA Dietary Reference Intakes establish the Adequate Intake for sodium at 1,500 mg per day for adults aged 19 to 50. The Tolerable Upper Intake Level — the maximum considered safe for most healthy adults — is 2,300 mg per day. Regularly exceeding 2,300 mg, equivalent to roughly one teaspoon of table salt (approximately 5,850 mg), is associated with elevated blood pressure and significantly increased risk of cardiovascular disease and stroke.
How do I convert sodium back to salt?
To calculate the salt equivalent of a known sodium amount, divide the sodium value by 0.3933, or equivalently multiply by 2.5423. For example, 500 mg of sodium corresponds to 500 / 0.3933 = approximately 1,271 mg (1.27 grams) of salt. This reverse conversion is useful when a nutrition label or packaged food reports sodium and a salt-by-weight figure is needed for recipe planning or dietary comparison purposes.
Why do food labels in different countries show salt instead of sodium?
Nutrition labeling regulations differ by jurisdiction. In the United States, Canada, and Japan, labels are required to display sodium in milligrams. In the United Kingdom, Australia, New Zealand, and most European Union countries, labels typically report salt in grams. Both values describe the same dietary content and health risk, but the different units make direct product comparisons confusing without a sodium in salt converter to translate accurately between the two international labeling formats.
Does the type of salt — sea salt, kosher, or Himalayan — change the sodium conversion result?
No. The conversion factor of 0.3933 applies to all forms of pure sodium chloride, regardless of source or processing method. Sea salt, kosher salt, iodized table salt, and Himalayan pink salt are all predominantly NaCl and contain approximately 39.33% sodium by mass. Trace minerals present in specialty salts account for less than 1% of total mass and have no meaningful effect on the sodium calculation for standard dietary tracking or clinical nutrition purposes.