Seaweed, dulse (laver, nori), dried

Not checked yet · database values 217 kcal per 100 g

Not checked for absorption yet: these are the listed values.

Not checked yet: the numbers below are what the database lists.

Good for

How we counted this

What 100 g gives you: imported foods have no serving size yet.

Your body needs enough of each of these. Past enough, more doesn’t help. Amounts are what the food databases list, not what your body absorbs, unless a row says it was measured.

The words: “A lot” means one serving gives 20% or more of Health Canada’s daily amount, “Some” 10% to 19%, “A little” 2% to 9%, “Almost none” under 2%. Strongest word first; within a word, protein and fibre lead, then the biggest share. ?

A milligram (mg) is a thousandth of a gram, and a microgram (µg) a thousandth of a milligram: 1,000 µg make 1 mg.

Protein
Your muscles, and every other tissue, are built and repaired from it.
A lot
Learn more
36.2 g in 100 g: 65% of the 56 g a day men need, 79% of the 46 g women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. Institute of Medicine 2005, Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids
Vitamin C
Your body makes collagen with it, which wounds need to heal. It also helps you absorb iron from plants.
A lot
Learn more
243 mg in 100 g: 270% of the 90 mg a day men need, 324% of the 75 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin C fact sheet for health professionals
Folate
Your body needs it to make DNA and to divide new cells.
A lot
Learn more
912 µg in 100 g: 228% of the 400 µg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, folate fact sheet for health professionals
Riboflavin (B2)
Your cells use it to make energy and handle fats. It also helps turn tryptophan into niacin and activate vitamin B6.
A lot
Learn more
2.78 mg in 100 g: 214% of the 1.3 mg a day men need, 253% of the 1.1 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, riboflavin fact sheet for health professionals
Vitamin A
Your eyes need it to see in dim light.
A lot
Learn more
Getting enough matters; more than enough doesn’t sharpen your sight.
1,621 µg in 100 g: 180% of the 900 µg a day men need, 232% of the 700 µg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin A fact sheet for health professionals
Vitamin B6
Helps you use protein, and your brain needs it to make its chemical messengers.
A lot
Learn more
0.99 mg in 100 g: 76% of the 1.3 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin B6 fact sheet for health professionals
Potassium
Your nerves, muscles and kidneys need it to work.
A lot
Learn more
2,219 mg in 100 g: 65% of the 3,400 mg a day men need, 85% of the 2,600 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, potassium fact sheet for health professionals
Iron
Carries oxygen in your blood.
A lot
Learn more
11.2 mg in 100 g: 140% of the 8 mg a day men need, 62% of the 18 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, iron fact sheet for health professionals
Zinc
Your immune system and healing wounds depend on it.
A lot
Learn more
6.55 mg in 100 g: 60% of the 11 mg a day men need, 82% of the 8 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, zinc fact sheet for health professionals
Thiamin (B1)
Your cells use it to get energy from food, and so to grow and work.
A lot
Learn more
0.61 mg in 100 g: 51% of the 1.2 mg a day men need, 55% of the 1.1 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, thiamin fact sheet for health professionals
Calcium
Builds your bones and teeth.
A lot
Learn more
436 mg in 100 g: 44% of the 1,000 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, calcium fact sheet for health professionals
Vitamin E
Shields the fats in your cells from damage; your immune system uses it too.
A lot
Learn more
6.21 mg in 100 g: 41% of the 15 mg a day.
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, vitamin E fact sheet for health professionals

2 more nutrients below “a lot”

Fibre
Keeps your gut moving.
A little
Learn more
1.87 g in 100 g: 5% of the 38 g a day men need, 7% of the 25 g women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. Institute of Medicine 2005, Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids
Magnesium
Your muscles and nerves need it to work.
A little
Learn more
12.5 mg in 100 g: 3% of the 400 mg a day men need, 4% of the 310 mg women need. The word follows the smaller share, which is the share of the higher amount. ?
Source: How much of it gets in hasn’t been measured for this food yet. NIH Office of Dietary Supplements, magnesium fact sheet for health professionals

Missing from our databases for this food, so left out, not counted as zero: vitamin K1, niacin, vitamin B12, selenium, vitamin D, choline, omega-3: ALA and omega-3: EPA + DHA.

Watch out

How we counted this

We haven’t checked this food. Foods like it carry these, so they’re shown here until we do. None of them was measured in this food.

Too much iodine
Worth knowingCommon in this kind of food; not tested in this one
Seaweed can carry a great deal of iodine, brown seaweed (kombu, kelp) above all; FSANZ and ANSES advise caution, especially in pregnancy and for young children. Not measured for this food.
Learn more
How we got this
Seaweed. Decision #56 per-gram arithmetic: dried kombu reaches the 1,100 µg UL at about 0.26-0.52 g, dried hijiki at 0.58-7.9 g, nori at 2.7-117 g
Health Canada, Dietary reference intakes tables: Reference values for elements · grade C
Every food with too much iodine

Better options

We haven’t checked this food, so we don’t rank it against the foods we have: its numbers are as the database lists them.

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The numbers

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Name in the database: Seaweed, dulse (laver, nori), dried

Listed nutrients, per 100 g

For each nutrient, the value this page uses is marked “used”. A row marked “second database” is another database’s figure for a matching food, kept so you can see how far databases disagree (they can differ in the samples analysed, lab methods and rounding). Its own cells are worked out from it, but none of the page’s words or scores are.

Nutrient	Per	Per 100 calories	How	Source	Grade
Calcium	436.366 mg	201.09 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Carbohydrate	23.501 g	10.83 g	listed used	`Canadian Nutrient File 2026` #2499	C
Energy	217 kcal	–	CNF Energy (kcal) used	`Canadian Nutrient File 2026`	–
Fat	1.745 g	0.8 g	listed used	`Canadian Nutrient File 2026` #2499	C
Fibre	1.87 g	0.86 g	listed used	`Canadian Nutrient File 2026` #2499	C
Folate	912.005 µg	420.28 µg	listed used	`Canadian Nutrient File 2026` #2499	C
Iron	11.221 mg	5.17 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Magnesium	12.468 mg	5.75 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Phosphorus	361 mg	166.36 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Potassium	2,219.233 mg	1,022.69 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Protein	36.218 g	16.69 g	listed used	`Canadian Nutrient File 2026` #2499	C
Riboflavin (B2)	2.78 mg	1.28 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Sodium	299.222 mg	137.89 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Sugars	0.49 g	0.23 g	listed used	`Canadian Nutrient File 2026` #2499	C
Thiamin (B1)	0.611 mg	0.28 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Vitamin A	1,621.412 µg	747.19 µg	listed used	`Canadian Nutrient File 2026` #2499	C
Vitamin B6	0.991 mg	0.46 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Vitamin C	243.118 mg	112.04 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Vitamin E	6.21 mg	2.86 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Water	6.68 g	3.08 g	listed used	`Canadian Nutrient File 2026` #2499	C
Zinc	6.546 mg	3.02 mg	listed used	`Canadian Nutrient File 2026` #2499	C

Other values (fatty acids, amino acids and more)

Nutrient	Per 100 g	Per 100 calories	How	Source	Grade
Beta-carotene	19,456.938 µg	8,966.33 µg	listed used	`Canadian Nutrient File 2026` #2499	C
Copper	1.646 mg	0.76 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Manganese	6.159 mg	2.84 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Niacin (B3, preformed)	9.164 mg	4.22 mg	listed used	`Canadian Nutrient File 2026` #2499	C
Pantothenic acid (B5)	3.248 mg	1.5 mg	listed used	`Canadian Nutrient File 2026` #2499	C

Change the amount to rescale the first column. Nutrients a database doesn't list are missing, not zero.

Hazard rows as the dataset rates them

Too much iodine · Worth knowing · Seaweed can carry a great deal of iodine, brown seaweed (kombu, kelp) above all; FSANZ and ANSES advise caution, especially in pregnancy and for young children. Not measured for this food. · Health Canada, dietary reference intakes

Sources

Health Canada, Canadian Nutrient File 2026 (14th edition)
cnf-2026 · dataset · Open Government Licence – Canada 2.0
Health Canada, Dietary reference intakes tables: Reference values for elements
hc-dri-elements · page · Government of Canada terms (Crown copyright; not OGL)

Body map 2026-10-25.1: each nutrient’s job comes from an agency fact sheet, linked beside it under Good for.

The plain words: “a lot” means one serving (100 g when the food has no serving size) gives at least 20% of the daily amount (the reference intake), “some” at least 10%, “a little” at least 2% (the cut-offs are ours, one set for every page: 20% and 10% are borrowed from the US labelling terms “high” and “good source” and applied to Health Canada’s daily amount, whereas Health Canada’s own shopper rule says 15%; provisional: they may change in a later method version). The daily amount is Health Canada’s Dietary Reference Intake for adults 19–30; where men and women need different amounts we use the higher one (protein: 56 g for men, 46 g for women). The percentage printed under each nutrient is the printed amount as a share of that daily amount, rounded to the nearest whole number, and the word is read from that percentage, so the amount, the percentage and the word always agree. Calcium with a measured absorption is scaled by how well it gets in compared with milk.

The scale: “Nothing to watch” means a serving a day stays under the limit at ordinary amounts; “Go easy” means a serving a day can push past the limit for adults who already take in the most, or fewer than 2 servings reach it; “Limit it” means once a week or less. The dataset’s own rating is under “How we got this”. Provisional: the scale may change in a later method version.

Measured absorption under Good for: grade-A studies in adults that tested this preparation of this food, as a share of the listed amount (the share digested, for protein), quoted once each source has passed our evidence check; animal studies and other variants stay in the table above. Provisional: this screen may change in a later method version.