Potato converter: whole potatoes, cups, grams
“Mashed potato for four” or “500 g diced potato”, recipes are never consistent. Convert between whole potatoes and chopped cups, grams, or ounces to know how many to scrub and peel.
Potatoes range enormously in size: a small new potato can be 140 g while a large baker tops 370 g. Choosing the right size below stops you over- or under-buying for a mash or roast.
How much does a potato weigh?
A medium, or average, potato weighs about 213 g, with a small one around 140 g and a large one around 370 g.
Related Potato Ingredients
Roasting sweet potato instead? The sweet potato converter handles whole-item counts and cubed cups across small, medium, and large sizes. See our Sweet Potato converter.
Adding beetroot to the tray? The beetroot converter works out whole-item counts and chopped cups across small, medium, and large sizes. See our Beetroot converter.
Out of potato? See potato substitutes →
Potato converter tool
Enter an amount, pick your units, and set the size for counting whole potatoes.
Result
1.37 cupsPotato Calculators & Kitchen Tools
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Common Potato conversions
Quick reference for potato at medium size. Switch the size in the converter above for small or large.
| potatoes | Cups (chopped) |
|---|---|
| 1 potato | 1.37 cups |
| 2 potatoes | 2.73 cups |
| 3 potatoes | 4.1 cups |
| 4 potatoes | 5.46 cups |
| 5 potatoes | 6.83 cups |
| 6 potatoes | 8.19 cups |
Potato conversion chart
The chart below shows how whole potatoes (medium size) convert to cups, grams and ounces.
| potatoes | cups | cups (US) | g | oz | lb | kg |
|---|---|---|---|---|---|---|
| 1 potato | 1.37 cups | 1.42 cups (US) | 213 g | 7.51 oz | 0.47 lb | 0.21 kg |
| 2 potatoes | 2.73 cups | 2.84 cups (US) | 426 g | 15.03 oz | 0.94 lb | 0.43 kg |
| 3 potatoes | 4.1 cups | 4.26 cups (US) | 639 g | 22.54 oz | 1.41 lb | 0.64 kg |
| 4 potatoes | 5.46 cups | 5.68 cups (US) | 852 g | 30.05 oz | 1.88 lb | 0.85 kg |
| 5 potatoes | 6.83 cups | 7.1 cups (US) | 1065 g | 37.57 oz | 2.35 lb | 1.07 kg |
Potato varieties and best uses
The conversions above are the same whatever variety you use; the difference is what each is good for. Here is how the common potato varieties compare.
| Variety | Best for |
|---|---|
| Russet | Mash, fries, baking: high-starch, goes fluffy. |
| Yukon Gold | All-purpose: creamy mash, roasting, gratins. |
| Maris Piper / King Edward | UK roasting and chips: fluffy interior, crisp edges. |
| Charlotte / new potatoes | Salads and boiling: waxy, holds its shape when cooked. |
Which should I pick?
For mash, a starchy potato is best: Russet (US) or Maris Piper / King Edward (UK) go light and fluffy; Yukon Gold gives a creamier, buttery mash and is the easiest all-rounder if you only buy one. For salads and boiling where the pieces must hold, use a waxy potato: Charlotte, new potatoes, or red-skinned.
Frequently Asked Questions
- What is the size of a medium potato?
- A medium potato weighs about 213 g, which works out to roughly 1.37 cups (1.42 US cups) of chopped flesh. Potatoes come in a range of sizes depending on the season, variety and where they were grown, so weight and cup figures shift accordingly. Use the size selector above to match what you actually have, then read the exact conversion for any amount.
- How much does a medium potato weigh?
- A medium potato weighs about 213 g, with a small one around 140 g and a large one near 370 g. That range changes the weight of any recipe that counts potatoes by the piece, so set the size selector to match what you actually have before trusting a cup or gram figure.
- How much does an average potato weigh?
- An average potato is the same as a medium one: about 213 g. A small potato is lighter at around 140 g and a large one heavier at about 370 g, so the size you actually have changes the total for any recipe that counts potatoes by the piece rather than by weight.
- How much does a large potato weigh?
- A large potato weighs about 370 g, noticeably more than a medium, or average, one at 213 g or a small one at 140 g. Set the size selector to large to convert cups, grams and ounces for the bigger potatoes you actually have on the counter.
- Which potato variety should I use?
- For mash, a starchy potato is best: Russet (US) or Maris Piper / King Edward (UK) go light and fluffy; Yukon Gold gives a creamier, buttery mash and is the easiest all-rounder if you only buy one. For salads and boiling where the pieces must hold, use a waxy potato: Charlotte, new potatoes, or red-skinned.
- How do I convert grams to ounces for any ingredient?
- Converting grams to ounces is pure weight maths that applies to any food, not just potatoes, so 500 grams is always 17.64 ounces. For other amounts, the weight converter at the link below handles grams, ounces, pounds, kilograms and stone in both directions. Grams to ounces converter
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