Watermelon converter: whole watermelons, cups, grams

A recipe says '4 cups diced watermelon' but you have one whole melon and no idea how far it goes. A medium watermelon is about 4500 g whole, so the yield shifts a lot with size. This converter moves between whole watermelons, diced cups, grams, and ounces.

Watermelons range hugely: a small one is around 2000 g while a large one tops 9000 g, and the rind is heavy, so the flesh yield is hard to eyeball. Pick the right size below to keep agua fresca, salads, and fruit platters on target.

How much does a watermelon weigh?

A medium, or average, watermelon weighs about 4500 g, with a small one around 2000 g and a large one around 9000 g.

Related Watermelon Ingredients

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After a milder melon? The honeydew converter handles whole-melon weights and diced cups across small, medium, and large sizes. See our Honeydew Melon converter.

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Watermelon converter tool

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

Size applies to whole watermelons (small / medium / large).

Result

28.48 cups

Watermelon Calculators & Kitchen Tools

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

Common Watermelon conversions

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

watermelonsCups (chopped)
1 watermelon28.48 cups
2 watermelons56.96 cups
3 watermelons85.44 cups
4 watermelons113.92 cups
5 watermelons142.41 cups
6 watermelons170.89 cups

Watermelon conversion chart

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

watermelonscupscups (US)gozlbkg
1 watermelon28.48 cups29.61 cups (US)4500 g158.73 oz9.92 lb4.5 kg
2 watermelons56.96 cups59.21 cups (US)9000 g317.47 oz19.84 lb9 kg
3 watermelons85.44 cups88.82 cups (US)13500 g476.2 oz29.76 lb13.5 kg
4 watermelons113.92 cups118.42 cups (US)18000 g634.93 oz39.68 lb18 kg
5 watermelons142.41 cups148.03 cups (US)22500 g793.66 oz49.6 lb22.5 kg

Watermelon 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 watermelon varieties compare.

VarietyBest for
Crimson Sweet (Seeded)Slicing and eating: the classic large, sweet red-flesh melon with seeds.
SeedlessEveryday eating and salads: sweet and crisp with no mature seeds, the supermarket default.
Sugar BabySmall kitchens: a compact icebox melon with deep red, sweet flesh.
Yellow-fleshFruit salads and novelty: honeyed flavour with golden flesh.

Which should I pick?

For everyday eating and salads, a Seedless watermelon is the convenient supermarket default: sweet, crisp, and no seeds to pick out. No Seedless? Crimson Sweet (Seeded) is the classic large, sweet red-flesh melon. Reach for Sugar Baby when you want a small icebox melon that fits the fridge, or a Yellow-flesh variety for a honeyed twist in fruit salads.

Frequently Asked Questions

What is the size of a medium watermelon?
A medium watermelon weighs about 4500 g, which works out to roughly 28.48 cups (29.61 US cups) of chopped flesh. Watermelons 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 watermelon weigh?
An average watermelon is the same as a medium one: about 4500 g. A small watermelon is lighter at around 2000 g and a large one heavier at about 9000 g, so the size you actually have changes the total for any recipe that counts watermelons by the piece rather than by weight.
Which watermelon variety should I use?
For everyday eating and salads, a Seedless watermelon is the convenient supermarket default: sweet, crisp, and no seeds to pick out. No Seedless? Crimson Sweet (Seeded) is the classic large, sweet red-flesh melon. Reach for Sugar Baby when you want a small icebox melon that fits the fridge, or a Yellow-flesh variety for a honeyed twist in fruit salads.
How much does a large watermelon weigh?
A large watermelon weighs about 9000 g, noticeably more than a medium, or average, one at 4500 g or a small one at 2000 g. Set the size selector to large to convert cups, grams and ounces for the bigger watermelons you actually have on the counter.
How much juice is in a watermelon?
A watermelon yields approximately 65% of its weight in juice. That means a medium watermelon (4500 g) yields about 2925 ml, a small one (2000 g) about 1300 ml and a large one (9000 g) about 5850 ml. See the juice yield calculator if you are adding watermelon to your juice blend. Open the juice yield calculator

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