How Much Sodium Per Day? 1,500 vs 2,300 mg Explained

Search “how much sodium per day” and you get two numbers back—2,300 mg and 1,500 mg—plus a lot of conflicting advice about which one applies to you.

Both numbers are real. They come from different organizations, and the right target depends on your blood pressure, your health history, and your clinician’s guidance. This guide covers where each number comes from, why the limits exist, and how to turn a daily target into actual decisions at a fast-food counter.

Not medical advice. Sodium needs vary by person and condition. If you have hypertension, kidney disease, heart failure, or take diuretics, follow your clinician’s guidance—not a blog post (including this one).

How much sodium per day is the official limit?

There is no single world-wide number, but the major authorities land close together:

Source	Daily sodium guidance
FDA / Dietary Guidelines for Americans	Less than 2,300 mg (the Daily Value on Nutrition Facts labels)
American Heart Association	No more than 2,300 mg; 1,500 mg is the ideal limit for most adults
World Health Organization	Less than 2,000 mg for adults
2025 ACC/AHA blood pressure guideline	Under 2,300 mg (optimal); closer to 1,500 mg (ideal)

Two takeaways from that table:

1. 2,300 mg is a ceiling, not a goal. It is the “do not exceed” line used on US food labels, not a target to aim for.
2. 1,500 mg is the heart-health ideal the AHA points most adults toward—especially anyone with high blood pressure.

Meanwhile, the average American eats about 3,400 mg per day—roughly 50% over the ceiling, and more than double the ideal. Children’s recommended limits are lower than adult ones (roughly 1,200–1,800 mg depending on age).

Why the limits exist: sodium and your health

Your body needs a small amount of sodium to balance fluids and run muscles and nerves. The problem is chronic excess, and the mechanism is straightforward:

• Sodium attracts water. A high-sodium diet pulls water into the bloodstream, increasing blood volume—and blood pressure.
• High blood pressure is the gateway risk. Over time it makes the heart work harder and damages arteries and organs. Uncontrolled hypertension raises the risk of heart attack, heart failure, stroke, kidney disease, and vision loss.
• Blood pressure tends to rise with age, so the margin for a high-sodium diet shrinks every year.

The good news: this works in reverse. The 2025 ACC/AHA guideline notes that cutting sodium toward the 2,300/1,500 mg targets is associated with average systolic blood pressure reductions on the order of 6–8 mm Hg in people with hypertension—comparable to what some single medications deliver.

This is why “how much sodium per day” is a health question, not just a diet question. The limit exists because of blood pressure, and blood pressure matters because of what it does to your heart, brain, and kidneys.

Salt vs. sodium: the teaspoon math

“Salt” and “sodium” are used interchangeably, but they are not the same thing:

• Table salt is sodium chloride—sodium is about 40% of its weight.
• 1 teaspoon of table salt ≈ 2,300 mg of sodium. That is the entire FDA Daily Value in one spoon.

This math matters because taste is a terrible sodium detector. Some high-sodium foods (pickles, soy sauce) taste salty, but plenty of sodium hides in foods that don’t—bread, breakfast cereal, pastries, baked goods. Bread alone can add hundreds of milligrams across a day simply because you eat it at every meal.

Where your sodium really comes from

Here is the finding that changes how people approach this: according to the FDA, over 70% of dietary sodium comes from packaged and prepared foods—not from the salt you add while cooking or at the table.

The CDC estimates about 40% of the sodium Americans eat comes from just these categories:

• Deli meat sandwiches
• Pizza
• Burritos and tacos
• Soups
• Savory snacks (chips, crackers, popcorn)
• Poultry
• Pasta mixed dishes
• Burgers
• Egg dishes and omelets

Notice the pattern: that list is the fast-food menu. A single combo meal—sandwich, fries, drink, sauce packets—commonly lands between 1,000 and 2,500+ mg, which can be an entire day’s budget in one bag. Putting the salt shaker away at home helps at the margins, but the big wins are in restaurant orders and packaged staples.

Reading labels: %DV and sodium claims

When you do have a package in hand, the FDA gives you two shortcuts:

The 5/20 rule for % Daily Value:

• 5% DV or less sodium per serving = low
• 20% DV or more per serving = high

Regulated package claims:

Claim on the package	What it legally means
Salt/Sodium-Free	Less than 5 mg per serving
Very Low Sodium	35 mg or less per serving
Low Sodium	140 mg or less per serving
Reduced Sodium	At least 25% less than the regular product
Light in Sodium / Lightly Salted	At least 50% less than the regular product
No-Salt-Added / Unsalted	No salt added during processing—may still contain sodium

Two traps worth knowing: “reduced sodium” is relative to the original product (a reduced-sodium soup can still be high), and “no-salt-added” does not mean sodium-free. Always check the milligrams, and always check the serving size—labels are per serving, not per package.

What your daily number means at a fast-food counter

A daily limit only becomes useful when you translate it into meal budgets. Here is how one fast-food meal eats into each target:

One meal contains	Share of a 2,300 mg day	Share of a 1,500 mg day
600 mg	~26%	~40%
900 mg	~39%	~60%
1,200 mg	~52%	~80%
2,000 mg	~87%	133%—over budget

The practical reading:

• On a 2,300 mg day, one careful fast-food meal (~600–900 mg) fits fine if the rest of the day is reasonably plain.
• On a 1,500 mg day, the same meal is most of your budget—fast food still works, but the order has to be deliberate: small sandwich, no cheese or bacon, sauce on the side, water or unsweetened tea.
• A 2,000+ mg combo blows either budget by itself. This is why we rank items instead of declaring whole chains “off limits.”

For full meal-budget tables and swap rules, see our guide to ordering under 800 mg.

Seven ways to cut sodium this week

• Pick your daily number (2,300 ceiling or 1,500 ideal) and write it where you order food—phone note, wallet card.
• Check the chain’s official nutrition calculator before your usual order, not after.
• Drop cheese and bacon from one default order—dense sodium for the calories.
• Sauce on the side, always; dip, don’t pour.
• Swap one packaged staple to a low-sodium or no-salt-added version (soup, beans, canned vegetables—rinse canned goods to wash off some sodium).
• Watch the stealth sources: bread, tortillas, cereal, deli meat—frequency multiplies modest numbers.
• Re-taste before you re-salt. Your preference for salt adapts within a few weeks of eating less.

FAQ

Is 2,300 mg of sodium a day safe? It is the upper limit US health authorities set for adults—not a target. Most people eat well above it (~3,400 mg average), and heart-health organizations recommend aiming lower, around 1,500 mg, especially with high blood pressure.

How much sodium per day if I have high blood pressure? The AHA’s ideal limit for most adults is 1,500 mg/day, and the 2025 ACC/AHA blood pressure guideline calls under 1,500 mg the ideal for lowering blood pressure. Your clinician may set a different target for your situation—follow theirs.

Is sea salt or pink salt lower in sodium? No. By weight, gourmet salts contain essentially the same sodium as table salt (~40% sodium). Larger crystals can mean slightly less sodium per teaspoon by volume, but it is not a meaningful reduction.

Can you eat too little sodium? Sodium is essential, but true deficiency from diet alone is rare in healthy people eating normal food—it takes very little (a few hundred mg) to meet basic needs. People with specific conditions, endurance athletes sweating heavily, or those on certain medications should follow medical guidance.

Does drinking water flush out sodium? Hydration matters, but water does not cancel a high-sodium meal. The reliable lever is eating less sodium in the first place.

Keep reading

• Lowest sodium fast food: how to order under 800 mg
• Low-sodium McDonald’s: menu items ranked
• Subway low-sodium builds
• Chipotle lower-sodium bowls

Sources & verification

• FDA — Sodium in Your Diet (Daily Value, %DV rules, package claims, sodium sources)
• American Heart Association — How much sodium should I eat per day? (2,300 mg limit, 1,500 mg ideal)
• WHO — Salt reduction fact sheet (under 2,000 mg for adults)

Last editorial pass: 2026-07-18. Guidelines are updated by their issuing bodies—check the linked sources for the current figures.