Potato converter: whole items, cups, grams

Potato converter

“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.

Enter an amount, pick your units, and set the item size for whole-item counts.

Size applies to whole-item counts (small / medium / large produce).

Result

1.37 cups

Common Potato conversions

Quick reference for potato at medium size. Switch the size in the converter above for small or large.

Whole itemsCups (chopped)
1 potato1.37 cups
2 potatoes2.73 cups
3 potatoes4.1 cups
4 potatoes5.46 cups
5 potatoes6.83 cups
6 potatoes8.19 cups

Potato conversion chart

The chart below shows how whole potatoes (medium size) convert to cups, grams and ounces.

potatoescupscups (US)gozlb
1 potato1.37 cups1.42 cups (US)213 g7.51 oz0.47 lb
2 potatoes2.73 cups2.84 cups (US)426 g15.03 oz0.94 lb
3 potatoes4.1 cups4.26 cups (US)639 g22.54 oz1.41 lb
4 potatoes5.46 cups5.68 cups (US)852 g30.05 oz1.88 lb
5 potatoes6.83 cups7.1 cups (US)1065 g37.57 oz2.35 lb

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.

VarietyBest for
RussetMash, fries, baking: high-starch, goes fluffy.
Yukon GoldAll-purpose: creamy mash, roasting, gratins.
Maris Piper / King EdwardUK roasting and chips: fluffy interior, crisp edges.
Charlotte / new potatoesSalads 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

How many cups is one medium potato?
One medium potato (about 213 g) gives roughly 1.37 cups of chopped flesh. A small one (around 140 g) yields about 0.9 cups and a large one (around 370 g) about 2.37 cups, so set the size selector to match the potatoes you actually have before you trust the figure. Open potato converter
How many potatoes make one cup chopped?
You need about 0.73 medium potatoes for one cup of chopped potato. With small potatoes that rises to roughly 1.11, and with large potatoes it drops to about 0.42. The converter runs both ways, so enter the cups your recipe asks for and read off how many whole potatoes to chop.
How much does a medium potato weigh?
A medium potato weighs about 213 g, small is around 140 g and large around 370 g.
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.

Other produce

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