how fast do fingernails grow
Fingernails grow about 0.1 millimetres per day, which adds up to roughly 3–3.5 millimetres per month (about one-tenth of an inch).
Quick Scoop
- Average fingernail growth: about 0.1 mm per day.
- Per month, that’s around 3.47 mm (often rounded to 3.5 mm).
- In a year, fingernails can grow over 4 cm if they are never cut.
- Toenails grow more slowly, around 1.6 mm per month.
- A completely new fingernail takes about 3–6 months to regrow; a toenail can take 12–18 months.
What affects how fast they grow?
- Age : Growth tends to slow gradually as you get older.
- Dominant hand : Nails on the hand you use more (right hand for most people) usually grow faster.
- Specific finger : The middle finger nail is often the fastest-growing; pinky nails are typically slower.
- Season : Nails tend to grow a bit faster in summer than in winter.
- Health, diet, hormones : Good overall health, balanced nutrition, and certain hormonal states like pregnancy can speed growth; illness or poor diet can slow it.
How long until you “see” growth?
If you clip your nails short, you’ll usually notice a visible edge again within about a week, and a clearly longer nail in 2–3 weeks, matching the ~3 mm-per-month rate.
Simple example
If your fingernail grows 3.5 mm per month and you want about 7 mm of free edge (a clearly visible white tip), that typically takes around 2 months of growth—assuming no breaks or peeling.
| Nail type / metric | Typical value |
|---|---|
| Daily fingernail growth | ≈ 0.1 mm per day | [1][3]
| Monthly fingernail growth | ≈ 3–3.5 mm per month | [8][3][1]
| Monthly toenail growth | ≈ 1.6 mm per month | [3][1]
| Time to regrow full fingernail | About 3–6 months | [3]
| Time to regrow full toenail | About 12–18 months | [1][3]
| Factors that speed growth | Dominant hand use, middle finger, summer, pregnancy, good health and diet | [9][5][7][1][3]
Information gathered from public forums or data available on the internet and portrayed here.