61 %
Potassium contributes to normal functioning of the nervous system and to normal muscle function.
How many calories are in cooked old potatoes?
254kcal
in a 175 g portion
145 kcal per 100 g.
Source: UK CoFID 2021, record 13-493. Checked 5 October 2026.
6.7 gFat
5.1 gProtein
5.3 gFibre
61 %Daily potassium
What’s in a 175 g portion
More than half of a portion is water. The rest is 46.4 g carbohydrate and 6.7 g fat.
- 6.7 gFat
- 5.1 gProtein
- 46.4 gCarbohydrate
- 5.3 gFibre
- 110 gWater
- 2.1 gMinerals and the rest
Below average for potatoes
Old potatoes are 145 kcal per 100 g. The 37 potatoes in this database average 179.
Old potatoes145
Potatoes average179
Low in sugar, almost no salt
Low sugars and very low salt by UK labelling rules, per 100 g.
Sugars, per portion3 g
Salt, per portion0.01 g
Vitamins and minerals in old potatoes
One of the 20 recorded reach the “high in” level. Potassium leads.
Only a trace
- Vitamin A
- Selenium
None recorded
- Vitamin D
- Vitamin B12
Show all 20 with amounts
Potassium1229 mg, 61 %
Thiamin (vitamin B1)0.4 mg, 37 %
Chloride233 mg, 29 %
Copper0.19 mg, 19 %
Folate0.0367 mg, 18 %
Manganese0.37 mg, 18 %
Niacin (vitamin B3)2.8 mg, 18 %
Vitamin B60.23 mg, 16 %
Pantothenic acid (vitamin B5)0.95 mg, 16 %
Vitamin C12.3 mg, 15 %
Magnesium56 mg, 15 %
Phosphorus91 mg, 13 %
Iron1.3 mg, 9.3 %
Zinc0.7 mg, 7 %
Calcium22.8 mg, 2.8 %
Riboflavin (vitamin B2)0.04 mg, 2.5 %
Biotin0.0007 mg, 1.4 %
Iodine0.00175 mg, 1.2 %
Vitamin Dnone recorded
Vitamin B12none recorded
Badges use the UK legal thresholds per 100 g: 15 % of the reference intake for “source of”, 30 % for “high in”. A trace is shown as “trace” and never counts.
What old potatoes don’t give you. And where to find it.
No recorded vitamin D or selenium, and only 4 % of the zinc reference intake per 100 g.
Vitamin D
0mgin old potatoes
Find it inBloater, grilled500 % per 100 g
Selenium
Tracein old potatoes
Find it inKidney, pig, fried491 % per 100 g
Zinc
4%in old potatoes, per 100 g
Find it inOysters, raw592 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
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Old potatoes against other potatoes
Old potatoes come second for potassium here, just behind potato chips (fine cut, frozen, fried in blended vegetable oil).
720mg
702mg
602mg
423mg
360mg
Potatoes, old, wedges, with skin, homemade, cooked in rapeseed oilthis page
Potato croquettes, fried−342 mg
All values per 100 g, from the same dataset. Differences are against old potatoes.
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Questions about old potatoes
The questions people ask about old potatoes, answered from the dataset.
How many calories are in a portion of old potatoes?
A typical portion (175 g, a medium portion) gives 254 kcal. Per 100 g the figure is 145 kcal.
Is old potatoes high in potassium?
Yes. Potatoes, old, wedges, with skin, homemade, cooked in rapeseed oil have 702 mg potassium per 100 g, 35 % of the NRV, above the 30 % threshold for a “high in” claim.
Which vitamins and minerals do old potatoes have most of?
By share of the daily reference intake: potassium (702 mg, 35 %), thiamin (0.23 mg, 21 %) and chloride (133 mg, 17 %) per 100 g.
Are old potatoes high in fibre?
It is a source of fibre (3 g per 100 g, above the 3 g line) but not high in fibre, which needs 6 g.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 13-493, Potatoes, old, wedges, with skin, homemade, cooked in rapeseed oil, published by Public Health England under the Open Government Licence v3.0. Main data references: DH, Nutrient analysis of fruit and vegetables, 2013. Values are per 100 g of the edible part; a portion is 175 g, a medium portion, the usual UK portion for potatoes. Reference intakes follow Regulation (EU) 1169/2011 Annex XIII as retained in GB law; “source of”, “high in” and “low” follow Regulation (EC) 1924/2006, assessed per 100 g. Function lines are the authorised wording from the GB register of nutrition and health claims, credited to the nutrient. Energy is rounded to the whole kcal and kJ; other amounts to one decimal, or two below 1. A trace is shown as “trace” and never gets a figure or a badge; a nutrient never analysed is left off the page. We start from the dataset’s 2,887 records and keep 2,322: records weighed with bone, shell or skin, alcoholic drinks, infant foods, brand-named products, records with fewer than eight measured vitamins and minerals and near-identical variants are left out. Group context uses the 37 potatoes kept from the dataset; a rank counts only the foods with a measured figure for that nutrient. Food images are illustrations from Ingredient Atlas, released under CC0; they show the food, not the measured sample, and where no illustration of the exact food exists the nearest one is shown (here: Potato). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More potatoes
From the same group, with calories per 100 g, and the foods with the most potassium.
