
Children's nails typically grow faster than adults', and genetics play a significant role in determining how fast they grow. Overall health and nutrition can also impact nail growth. Toenails grow much slower than fingernails, with a growth rate of about 1.62 mm per month, while fingernails grow at an average rate of 3.47 mm per month. The rate of growth also depends on which finger the nail is on, with the little finger growing slower than the others.
| Characteristics | Values |
|---|---|
| Average growth rate of fingernails | 2.5-3.47 mm per month or 0.1 mm per day |
| Average growth rate of toenails | 1-1.62 mm per month or 0.25-0.5 mm per week |
| Fingernail growth rate by age | Decreases by 0.5% per year after age 25 |
| Toenail growth rate by age | Takes 1.5 years to fully grow back |
| Fingernail growth rate by hand | Nails on the dominant hand grow faster |
| Fingernail growth rate by finger | Nails on longer fingers grow faster; little finger grows slowest |
| Fingernail growth rate by season | Faster during the summer |
| Toenail growth rate by season | Slower during colder months |
| Factors influencing nail growth | Genetics, age, health, nutrition, hormones, medical conditions, medications |
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What You'll Learn

Fingernails grow faster than toenails
On average, a child's fingernails grow about 2.5 to 3.5 millimetres per month. This equates to about one-tenth of a millimetre per day. At this rate, it can take around three to six months for a fingernail to completely regrow.
There are a few theories as to why fingernails grow faster. One theory, called the "terminal trauma" theory, suggests that the more you use a digit, the faster the nail grows. This is because the constant use of your fingers may wear down your fingernails, so your body compensates by growing them more quickly. In contrast, toenails are generally protected by shoes and are subjected to less trauma. Another theory suggests that the rate of nail growth corresponds directly to the amount of blood flowing through the digit. Since the hands are closer to the heart than the feet, more blood flows through the fingers, resulting in faster fingernail growth.
The rate of nail growth can also depend on factors such as age, hand dominance, finger length, season, and hormone levels. For example, nails tend to grow faster during the day and in the summer, while growth slows with age due to decreased blood circulation. The nails on the dominant hand and longer fingers also tend to grow faster. Additionally, hormone levels can influence nail growth, with pregnancy and puberty being associated with rapid nail growth.
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Nail growth slows with age
Fingernails grow at an average rate of about 3.47 millimeters (mm) per month or about a tenth of a millimeter per day. Toenails, on the other hand, grow at a slower rate of about 1.62 mm per month. The rate of nail growth is influenced by various factors, including age, with nail growth peaking during puberty and declining as hormone levels balance out with age. Starting at age 25, the rate of nail growth is expected to decrease by approximately 0.5% per year.
The curve of nails may change as people age, with a dramatic shape change and very rounded nails indicating clubbing, which is a sign of long-term oxygen deprivation. Nails may also turn yellow or become discolored, turning slightly gray, pale, or opaque. These changes may be indicative of underlying health conditions, such as kidney, liver, or endocrine disorders.
Darker-skinned individuals may develop longitudinal melanonychia as they age, characterized by dark stripes on the nails composed of melanin, the same pigment that gives hair its color. In some cases, these dark ridges may indicate a more serious condition, such as melanoma or malignant skin cancer.
Overall, while nail growth rates vary, it is evident that nail growth slows down with increasing age, and this decrease in growth rate may be attributed to the slowing of blood circulation with age.
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Health and nutrition impact nail growth
Fingernails grow about a tenth of a millimeter per day, which is about 2.5 to 3.5 millimeters per month. Toenails grow at a slower rate of about 1 to 1.62 millimeters per month. At this rate, it can take about 3 to 6 months for a fingernail to completely replace itself, while a toenail can take up to a year and a half to fully grow back.
In addition to nutrition, overall health can also impact nail growth. For example, nail growth is said to peak during puberty and decline as hormone levels balance out with age. Pregnancy can also affect nail growth rates, with increased growth during pregnancy and decreased growth during lactation. Trauma to the nail area can also influence nail growth. When trauma occurs, the body sends more blood and nutrients to the area to aid in repair, which may speed up nail growth.
While there is no magic formula for nail growth, proper care and nutrition can speed up the process. This includes regular nail clipping, moisturizing nails and cuticles, and maintaining a healthy diet.
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Fingernails grow faster in summer
On average, a child's fingernails grow about a tenth of a millimeter per day, which is approximately 3.47 millimeters per month or 2.5 millimeters per month. At this rate, it can take anywhere from three to six months for a nail to completely replace itself. It's worth noting that the nails on the dominant hand tend to grow faster due to more frequent use, which also increases the risk of trauma.
While there are no scientifically proven methods to make nails grow faster, certain factors can influence their growth rate. One notable factor is the season, with fingernails growing faster during the summer months. This phenomenon may be attributed to several reasons:
- Increased Sun Exposure: Summer brings more sunlight, and vitamin D plays a crucial role in nail health. Adequate vitamin D intake contributes to stronger, healthier nails.
- Nutrition and Hydration: Summer is often associated with an abundance of fresh fruits and vegetables, ensuring proper nutrition. Proper hydration is also more prevalent in the summer, and well-hydrated nails are less likely to become brittle and prone to breakage, allowing them to grow longer.
- Improved Blood Circulation: Warmer summer temperatures can enhance blood circulation in the body, including the hands and fingers. This improved circulation delivers essential nutrients to the nails, promoting faster and healthier growth.
- Outdoor Activities: Children tend to spend more time outdoors during summer, engaging in physical activities that increase blood flow and stimulate nail growth.
- Hormone Levels: Seasonal changes can influence hormone levels, and summer may be a time when certain hormones peak, impacting nail growth rates.
Additionally, it's worth mentioning that frequent nail clipping can promote faster nail growth, as it doesn't carry the same risks as nail-biting. Maintaining proper nail care, including regular moisturizing of nails and cuticles, can also contribute to healthier and potentially faster nail growth.
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Proper nail care helps healthier growth
On average, fingernails grow about a tenth of a millimeter per day, or approximately 2.5 to 3.5 millimeters per month. Toenails, on the other hand, grow at a slower rate of around 1 to 1.62 millimeters per month. Several factors influence this rate of growth, including age, hand dominance, finger length, hormone levels, overall health, and season. For instance, nails tend to grow faster during the day and in the summer. Additionally, the nails on your dominant hand and longer fingers typically grow at a quicker pace.
While there is no magic formula for nail growth, proper nail care plays a crucial role in promoting healthier and faster growth. Here are some tips for proper nail care:
- Keep your nails trimmed: Use nail clippers or scissors to trim your nails, and a nail file or emery board to smooth out any jagged edges. Trim your fingernails straight across and slightly rounded at the top. As for toenails, trim them straight across. Keeping your toenails short minimizes the risk of trauma and injury.
- Moisturize regularly: Apply hand lotion or moisturizer to your nails and cuticles to keep them hydrated and healthy. This is especially important after hand washing, as too much water exposure can cause nails to split, peel, or break.
- Avoid harmful chemicals: Some everyday products like hand sanitizers, cleaning supplies, and certain shampoos can dry out your nails, making them brittle. Opt for moderate hand sanitizer use, and wear rubber gloves when cleaning or washing dishes to protect your nails from harsh chemicals.
- Take vitamins and supplements: Biotin, a B vitamin, can help strengthen nails and promote healthy growth. Consult with your healthcare provider before taking any supplements to ensure they are safe for you.
- Stay hydrated: Drinking enough water is essential for nail health. Dehydration can lead to brittle nails that are prone to breaking, peeling, and splitting.
- Avoid using nails as tools: Using your nails to open cans or reach into small spaces can lead to breakage and chipping, weakening the nail. Instead, use the pads of your fingers or tools like paper clips.
- See a dermatologist if needed: If you've tried various methods to improve your nail health without success, consider consulting a dermatologist or skincare professional for personalized advice and treatment options.
By incorporating these nail care practices into your routine, you can support the healthy growth of your nails and maintain their strength and appearance. Remember, proper nail care reflects your overall health and well-being.
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Frequently asked questions
Children's nails grow faster than adults' nails. Fingernails grow at an average rate of 3.47mm per month or about a tenth of a millimeter per day. Toenails grow at a slower rate of 1.62mm per month.
Genetics, age, overall health, and nutrition can influence the growth rate of children's nails. Nail growth also depends on which finger the nail is on. For example, the little finger's fingernail grows slower than the other fingernails.
While there is no magic formula for nail growth, maintaining a balanced and healthy diet, staying hydrated, and protecting nails from harsh chemicals can contribute to healthier and faster nail growth in children.
It can take up to six months for a lost fingernail to grow back and up to 18 months for a lost toenail to grow back.











































