How long does it typically take for a fingernail to be completely replaced?

Fingernails typically grow at a rate of about 1/8 inch per month, which means it generally takes around 4 to 6 months for a fingernail to grow from the cuticle to the fingertip and be completely replaced. This process involves the nail matrix and nail bed working together to produce new nail cells that push out the older ones. Factors such as age, health, and nutrition can affect nail growth rates, but the average time frame remains between 4 to 6 months. Therefore, this timeframe aligns with the biological process of nail growth and replacement.