Potato converter: whole potatoes, cups, grams
“Mashed potato for four” or “500 g diced potato”: recipes rarely say how many potatoes and what size that is. 500 g is a little over 3 cups diced. This converter does the same calculation for any amount in cups, grams or ounces.
A large jacket potato at 370 g is more than two and a half small new potatoes at 140 g, so a recipe asking for four potatoes can mean anywhere from 560 g to nearly 1.5 kg. Set the size below to see how many you need for a mash or roast.
How much does a potato weigh?
Weight runs from about 140 g (4.94 oz) for a small potato up to 370 g (13.05 oz) for a large one, with a medium, or average, one at 213 g (7.51 oz).
Potato substitutes
Ran out? What to use instead of potato →
Potato converter tool
Enter an amount, pick your units, and set the size for counting whole potatoes.
Result
1.37 cupsPotato Calculators & Kitchen Tools
Working with potato? These tools handle the jobs a converter cannot.
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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, chips and jacket potatoes: high-starch, so the flesh goes fluffy and the skin crisps. |
| Yukon Gold | All-purpose: medium starch, so it makes a creamy mash without going gluey and keeps its shape in a gratin, though it will not crisp like a Russet. |
| Maris Piper / King Edward | UK roast potatoes and chips: parboil and shake the pan to rough the edges, and they crisp up around a fluffy middle. |
| Charlotte / new potatoes | Salads and boiling: waxy and thin-skinned, so boil them whole with the skins on and slice them while still warm. |
Which should I pick?
For mash, a starchy potato is best: Russet (US) or Maris Piper / King Edward (UK) are light and fluffy when mashed; Yukon Gold gives a creamier, buttery mash and is the easiest all-rounder if you only buy one. For salads and boiling, use a waxy potato (Charlotte, new potatoes, red-skinned), because starchy ones fall apart in the pot.
In my kitchen: Loaded potatoes
An easy dinner for the kids is loaded potatoes where the potato is microwaved, inside scooped out and mashed while skins go in air fryer to crispy up. The mash is mixed with cheese, bacon and green veg for a healthy twist and put back into the crispy skin to bake before serving.
Notes from Ian, Cooking Converter
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) are light and fluffy when mashed; Yukon Gold gives a creamier, buttery mash and is the easiest all-rounder if you only buy one. For salads and boiling, use a waxy potato (Charlotte, new potatoes, red-skinned), because starchy ones fall apart in the pot.
- 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
Potato measurement options
Choose from the following measurements to convert from
Related to Potato
Sweet Potato
Sweet potato is denser (139 g/cup vs 156 g/cup), sweeter and softer once cooked. Roast it at the same temperature but check earlier, as the sugars brown it faster, and expect less starchy bite. See our Sweet Potato converter.
Cauliflower
Low-carb swap for mash and gratin. Cauliflower (111 g/cup) carries much less starch, so the mash turns out lighter and looser. Drain well after boiling or the result waterlogs. See our Cauliflower converter.
Beetroot
A medium potato at 213 g outweighs a medium beetroot at 82 g by two and a half times, so a tray built for four potatoes needs about ten beetroot. The beetroot converter helps with the count. See our Beetroot converter.
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