Medium orange Size & Weight

A medium orange is about 7 cm (70 mm) in diameter and weighs roughly 130 to 150 grams. Like apples, oranges are sold by “count size”, the number that fills a standard carton, so a “medium” is a grade rather than a fixed measurement.

This guide covers the average orange dimensions, how navel and Valencia oranges differ in size, and how a medium orange compares to a tennis ball, an apple, and a baseball.

Quick Answer: How Big Is a Medium Orange?

A medium orange is 65 – 75 mm across (about 70 mm typical) and weighs 130 – 150 g. Navel oranges tend to run a little larger than Valencias at the same grade. The USDA reference orange is about 2.75 in (70 mm) and 131 g.

Orange Dimensions at a Glance

• Small: ~60 mm diameter, ~100 – 120 g (count 113 – 138 per carton)
• Medium: ~70 mm diameter, ~130 – 150 g (count 72 – 88)
• Large: ~80 mm diameter, ~180 – 220 g (count 48 – 56)
• Peel: roughly 25 – 30% of the total weight, thicker on navel oranges
• Shape: near-spherical, slightly flattened at the stem and blossom ends

What Does a Medium Orange Look Like in Size?

A medium orange sits in a cupped palm and is a little larger than a tennis ball, close to a baseball, and slightly smaller than a medium apple. Its 70 mm diameter is about two-thirds the width of a coffee mug and just under three golf balls laid in a line.

6 Everyday Comparisons for a Medium Orange

1. A tennis ball (67 mm) is very close, about 3 mm smaller than a medium orange.
2. A baseball (73 mm) is a touch larger.
3. A medium apple (75 mm) is about 5 mm wider.
4. A billiard ball (57 mm) is clearly smaller.
5. A golf ball (42.7 mm) is about 60% of an orange’s diameter.
6. A softball (97 mm) is much larger.

Orange Size in Different Units

How Oranges Are Graded

Oranges are packed by count size: the number of fruit that fill a standard carton (for California/Arizona oranges, a 37.5 lb / 17 kg carton). A “count 88” carton holds 88 medium oranges; a “count 56” holds 56 large ones. Higher count numbers mean smaller fruit. Supermarkets then relabel these as small, medium, and large, so a “medium” from one shop can differ from another’s.

Common Mistakes When Comparing Orange Dimensions

1. Expecting an exact size. “Medium” covers roughly 65 – 75 mm and 130 – 150 g.
2. Forgetting the peel. A quarter to a third of an orange’s weight is skin and pith, more on navels.
3. Assuming navel and Valencia are the same size. Navels are usually larger and easier to peel; Valencias are smaller and juicier.
4. Comparing weight without size. Oranges are mostly water and low density; a 140 g orange is larger than a 140 g stone.
5. Confusing oranges with mandarins/clementines. Those are smaller, about 50 – 60 mm and 70 – 100 g.

Frequently Asked Questions

How big is a medium orange?

About 7 cm across and 130 – 150 g.

What is the diameter of an average orange?

Around 70 mm for a medium.

How much does a medium orange weigh?

130 – 150 g; the USDA reference is about 131 g.

Is an orange the same size as a tennis ball?

A medium orange is very close, about 3 mm larger across.

How are oranges graded?

By count size, the number that fill a standard carton; higher count means smaller fruit.

How big is a clementine compared to an orange?

Smaller: about 50 – 60 mm and 70 – 100 g.

Final Takeaway

A medium orange is about 7 cm across and 130 – 150 grams, close to a tennis ball or a baseball in size. Oranges are graded by count per carton rather than by measurement, navels run larger than Valencias, and a quarter to a third of the weight is peel.