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How Big Is a Grain of Rice?

A grain of rice is about 0.26 in (6.5 mm) long. That is about 263 times smaller than the average man. A grain of long-grain rice.

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How big is a grain of rice compared to the average man?

A grain of rice is about 263 times smaller than the average man. The average man is 263× the size of a grain of rice: about 263 grain of rices stacked up would match it.

Grain of Rice size facts

A grain of long-grain rice is about 6 to 7 mm long.

How does a grain of rice compare to other things?

A grain of rice next to 25 things of similar size, plus some everyday references:

Thing	Size	Compared to Grain of rice
Sun	865,000 miles (1,393,000 km) across	214 billion× bigger
Earth	7,920 miles (12,740 km) across	1.96 billion× bigger
Mount Everest	5.5 miles (8.849 km)	1.36 million× bigger
Eiffel Tower	1,083 ft (330 m)	50,800× bigger
School bus	40 ft (12.2 m) long	1,880× bigger
Average man (world)	5 ft 7 in (171 cm)	263× bigger
Average woman (world)	5 ft 3 in (159 cm)	245× bigger
House mouse	6.7 in (17 cm) long	26.2× bigger
Smartphone	5.8 in (14.7 cm)	22.6× bigger
Monarch butterfly	3.9 in (10 cm) long	15.4× bigger
Credit card	3.4 in (8.56 cm) long	13.2× bigger
Apple	3.1 in (8 cm) long	12.3× bigger
Baseball	2.9 in (7.4 cm) across	11.4× bigger
Tennis ball	2.6 in (6.7 cm) across	10.3× bigger
Wolf spider	2.4 in (6 cm) long	9.2× bigger
Bee hummingbird	2.2 in (5.5 cm) long	8.5× bigger
Golf ball	1.7 in (4.27 cm) across	6.6× bigger
US quarter	0.96 in (2.43 cm) across	3.7× bigger
Honeybee	0.59 in (1.5 cm) long	0.33 in (8.5 mm) bigger
Ladybug	0.28 in (7 mm) long	0.02 in (500 µm) bigger
Ant	0.16 in (4 mm) long	0.098 in (2.5 mm) smaller
Flea	0.098 in (2.5 mm) long	0.16 in (4 mm) smaller
Mustard seed	0.059 in (1.5 mm) across	4.3× smaller
Grain of sand	0.02 in (500 µm) long	13× smaller
Dust mite	0.012 in (300 µm) long	21.7× smaller

Where do these numbers come from?

Sizes are typical adult or reported values, rounded for readability. Read how we measure and compare sizes.