Free tool
Nail Growth Calculator
Just decided to stop biting? Get a realistic, week-by-week estimate of how long your nails will take to grow back — so slow progress finally has a finish line.
Estimated full regrowth
~14 weeks
About 3.2 months if the edge stays unbitten.
- Week 2A thin line of fresh growth appears at the base.
- Week 6The new edge is easier to see and feel — progress starts to feel real.
- Week 10Old biting damage has moved well toward the tip.
- Week 14Full grow-out — the nail has replaced itself from base to tip.
This is a rough estimate based on average growth rates, not medical advice. The biggest variable is not biology — it's re-biting. Every time the free edge gets bitten short again, visible progress resets even though the nail keeps growing underneath. Read the full recovery timeline →
Frequently asked questions
How fast do fingernails grow?
Fingernails grow about 3.4 millimetres per month on average, so a full nail typically takes several months to grow from base to tip. Toenails grow much slower, around 1.6 millimetres per month.
How long does it take for bitten nails to grow back?
Most people see a thin line of new growth within about two weeks, but a full grow-out usually takes roughly three to six months for fingernails. The biggest factor is not biology — it is how often the free edge gets bitten or picked again.
Can I make my nails grow back faster?
Growth rate is mostly set by age, genetics, and health, but you can protect new growth: keep nails filed and short while they recover, moisturise to prevent splitting, and track urges so a slip does not reset your progress.
Keep reading
How Long Do Bitten Nails Take to Grow Back?
A realistic nail biting recovery timeline, what affects nail growth, and how to track visible progress week by week.
How to Take Nail Progress Photos
How to take consistent nail recovery photos so growth is easier to see over weeks and months.
A 30-Day Nail Biting Recovery Plan
A gentle, week-by-week 30-day plan to stop biting your nails — building awareness, adding barriers and replacement habits, and tracking visible progress.
Make progress visible.
A calculator gives you the finish line. Tiptend gets you there — private weekly photo proof, gentle urge logs, and reminders that never nag.
Download on the App Store