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Fingernail Growth (Per Day)

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Fingernail Growth (Per Day)

The slowest show on your body/Medicine & Biology

Human fingernails grow at an average rate of about 3.47 mm per month, or roughly 0.1 mm per day. That is about 1 nanometer per second. Your middle finger nail grows fastest, and your thumbnail grows slowest. Fingernails grow about twice as fast as toenails. It takes about 6 months to grow an entirely new fingernail.

Measurements

Growth rate1.2 billionths m/s
14 trillionthsBullet trains
74.4 trillionthsCharging grizzly bears

About 0.1 mm per day

Daily growth100 millionths m
426 trillionthsJamaica lengths
1 thousandthsChicken wing lengths

0.1 mm per day

Nail thickness500 millionths m
208 millionthsCorn stalk heights
68.3 millionthsSoccer goal widths
27.3 millionthsRailroad car lengths

About 0.5 mm

Full regrowth time15.6 million s
4,927Microcenturies
7 thousandthsQueen Elizabeth II reigns
15.6 millionMississippis

About 6 months

Nail width (middle finger)1.4 hundredths m
42 millionthsAircraft carrier lengths
4 hundredthsSpider web diameters

About 14 mm

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