What is the size of a medium sweet potato?

A medium sweet potato weighs about 200 g, which works out to roughly 1.44 cups (1.5 US cups) of chopped flesh. Sweet 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 an average sweet potato weigh?

An average sweet potato is the same as a medium one: about 200 g. A small sweet potato is lighter at around 130 g and a large one heavier at about 320 g, so the size you actually have changes the total for any recipe that counts sweet potatoes by the piece rather than by weight.

How much does a large sweet potato weigh?

A large sweet potato weighs about 320 g, noticeably more than a medium, or average, one at 200 g or a small one at 130 g. Set the size selector to large to convert cups, grams and ounces for the bigger sweet potatoes you actually have on the counter.

How much juice is in a sweet potato?

A sweet potato yields approximately 45% of its weight in juice. That means a medium sweet potato (200 g) yields about 90 ml, a small one (130 g) about 59 ml and a large one (320 g) about 144 ml. See the juice yield calculator if you are adding sweet potato to your juice blend.

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 sweet 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.

Sweet Potato converter: whole sweet potatoes, cups, grams

A recipe says '2 cups cubed sweet potato' or '4 medium sweet potatoes', but yours might be palm-sized or as big as a grapefruit. A medium sweet potato weighs about 200 g whole, so the count shifts as size changes. This converter moves between whole sweet potatoes, cubed cups, grams, and ounces.

A small sweet potato is around 40% of the weight of a large one, so 'three sweet potatoes' in a tray bake or pie can swing the yield. Pick the right size below to keep mash, fries, and casseroles on target.

How much does a sweet potato weigh?

A medium, or average, sweet potato weighs about 200 g, with a small one around 130 g and a large one around 320 g.

Related Sweet Potato Ingredients

Using regular potato instead? The potato converter handles whole-item counts and cubed cups across small, medium, and large sizes. See our Potato converter.

Adding carrot to the roast? The carrot converter works out whole-item counts and chopped cups across small, medium, and large sizes. See our Carrot converter.

Out of sweet potato? See sweet potato substitutes →

Sweet Potato converter tool

Enter an amount, pick your units, and set the size for counting whole sweet potatoes.

Convert from

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Sweet potato sizeSize applies to whole sweet potatoes (small / medium / large).

Result

1.44 cups

Sweet Potato Calculators & Kitchen Tools

Working with sweet potato? These tools handle the jobs a converter cannot.

Juice Yield Calculator Estimate how much juice you get from fresh produce.
Oven to Air Fryer Converter Match the temperature and time when you swap the oven for an air fryer, fan oven, or slow cooker.
Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
Volume Converter Switch between cups, tablespoons, teaspoons and millilitres for any ingredient.
Weight Converter Switch between grams, ounces, pounds and kilograms for any ingredient.

Common Sweet Potato conversions

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

sweet potatoes	Cups (chopped)
1 sweet potato	1.44 cups
2 sweet potatoes	2.88 cups
3 sweet potatoes	4.32 cups
4 sweet potatoes	5.76 cups
5 sweet potatoes	7.19 cups
6 sweet potatoes	8.63 cups

Sweet Potato conversion chart

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

sweet potatoes	cups	cups (US)	g	oz	lb	kg
1 sweet potato	1.44 cups	1.5 cups (US)	200 g	7.05 oz	0.44 lb	0.2 kg
2 sweet potatoes	2.88 cups	3.01 cups (US)	400 g	14.11 oz	0.88 lb	0.4 kg
3 sweet potatoes	4.32 cups	4.51 cups (US)	600 g	21.16 oz	1.32 lb	0.6 kg
4 sweet potatoes	5.76 cups	6.02 cups (US)	800 g	28.22 oz	1.76 lb	0.8 kg
5 sweet potatoes	7.19 cups	7.52 cups (US)	1000 g	35.27 oz	2.2 lb	1 kg

Sweet 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 sweet potato varieties compare.

Variety	Best for
Beauregard	Everyday baking, mash, and roasting: deep orange flesh, sweet and reliably moist; the standard US supermarket sweet potato.
Garnet	Mash, pies, and casseroles: red-purple skin and deep orange flesh, very moist and sweet.
Jewel	Roasting and baking whole: copper skin and orange flesh, mild and sweet with a moist texture.
Japanese (Murasaki)	Roasted wedges and savoury sides: purple skin and pale flesh, drier and less sweet with a chestnut flavour.
Stokes Purple	Showpiece purées and colourful plates: purple skin and deep purple flesh, slightly drier and earthy.

Which should I pick?

For everyday baking, mashing, and roasting, Beauregard is the supermarket default: deep orange flesh, sweet and reliably moist. No Beauregard? Garnet or Jewel are interchangeable orange-flesh substitutes, equally sweet. For drier, savoury dishes and roasted wedges, Japanese (purple skin, pale flesh) holds its shape with a chestnut sweetness. Stokes purple-flesh sweet potatoes are the pick for colourful purées and showpiece plates.

Frequently Asked Questions

What is the size of a medium sweet potato?: A medium sweet potato weighs about 200 g, which works out to roughly 1.44 cups (1.5 US cups) of chopped flesh. Sweet 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 an average sweet potato weigh?: An average sweet potato is the same as a medium one: about 200 g. A small sweet potato is lighter at around 130 g and a large one heavier at about 320 g, so the size you actually have changes the total for any recipe that counts sweet potatoes by the piece rather than by weight.
How much does a large sweet potato weigh?: A large sweet potato weighs about 320 g, noticeably more than a medium, or average, one at 200 g or a small one at 130 g. Set the size selector to large to convert cups, grams and ounces for the bigger sweet potatoes you actually have on the counter.
How much juice is in a sweet potato?: A sweet potato yields approximately 45% of its weight in juice. That means a medium sweet potato (200 g) yields about 90 ml, a small one (130 g) about 59 ml and a large one (320 g) about 144 ml. See the juice yield calculator if you are adding sweet potato to your juice blend. Open the juice yield calculator
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 sweet 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

Sweet Potato measurement options

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