Reviewed by Evan Lewis, PhD. Last updated 8 August 2026.
A toenail falling off is almost always the end of something that started months ago, usually an injury or a long-running infection. The nail loosens from the tip backward, then lifts. It does not reattach. A new nail grows out from the base at about 1.62 mm a month, so a big toenail takes close to a year.
The short version
- The nail did not die today. Whatever caused this happened weeks or months ago, at the base.
- The lifted part will not stick back down. Dermatology guidance is to clip it back and keep it short, not glue it or wrap it.
- Do not rip it off. Trim to where it is still firmly attached and leave the rest alone.
- Toenails grow about 1.62 mm a month. A big toenail is roughly 20 mm long, so figure on 9 to 12 months.
- The skin under a bare nail bed is thin and new. Keep it clean and dry, and covered in shoes.
Why is my toenail falling off?
Four things account for most of it. The nail plate is made at the matrix, tucked under the skin fold at the base, and it takes months to travel to the tip. So the cause is nearly always behind you, not happening now.
| Cause | What it usually looks like | Typical timing |
|---|---|---|
| One hard knock | Dark red, purple or black under the nail first, then the nail loosens as a unit | Bruise appears in days, the nail lets go weeks to months later |
| Repeated small knocks | Running, hiking, football boots, shoes a half size too small. Often the second toe, often both feet | Builds over a season |
| Fungal nail infection | Yellow or brown, thickened, crumbly debris packed underneath, lifting from the free edge back | Months to years, painless until late |
| A skin condition affecting the nail | Pitting, oil-drop patches, or several nails and both hands and feet involved at once | Comes and goes with the skin |
DermNet describes the separation itself as onycholysis, "a common nail disorder in which the nail plate has separated from the nailbed typically resulting in a well-defined area of white opaque nail". That white area is not a stain. It is air in the gap.
My toenail is falling off but still attached. Should I pull it?
No. The attached part is still doing a job, which is covering the nail bed underneath it. Pulling it takes skin with it and turns a nuisance into an open wound.
What to do instead is the boring version. DermNet's advice for a lifting nail is to "clip the affected portion of the nail and keep the nail(s) short with frequent trimming". Cut back to where it is still firmly stuck down, straight across, and stop there. If the loose part catches on socks, that is the bit to take off, and only that bit.
Do not file the loose section thin hoping it will reseal. It will not. The same DermNet page is blunt about it: "The detached portion of the nail will not reattach."
What does toenail regrowth after falling off actually look like?
New nail comes out of the base as a thin, soft, slightly ridged band. It looks wrong at first. It is often paler, sometimes a bit wavy, and it thickens up as it advances.
The dividing line between old and new is the thing to watch. If that line keeps moving toward the tip month after month, the nail is doing what it should.
At 1.62 mm a month, new growth reaches roughly 4.9 mm by month three, 9.7 mm by month six, 14.6 mm by month nine and 19.4 mm by month twelve. A big toenail is about 20 mm from cuticle to tip.
How long until the new toenail grows back?
Nine to twelve months for a big toe, and less for the small ones because they are shorter. Nothing about that is negotiable, because it is set by how fast the nail is manufactured.
The measured number comes from a study of healthy young adults published in the Journal of the European Academy of Dermatology and Venereology, which found toenails grew at 1.62 mm per month, against 3.47 mm per month for fingernails. DermNet puts the same thing in plain terms: "Fingernails take 4–6 months to fully regrow; toenails take twice as long."
Worth knowing because of what it rules out. Anything sold to you as a fast fix for a nail is promising something the nail cannot do. Growth is the only mechanism by which a damaged nail is replaced, and growth runs at one speed.
Older adults, smokers, and people with reduced circulation to the feet often run slower than 1.62 mm a month. If that is you, add a few months to the estimate rather than assuming nothing is happening.
Will the new toenail grow back normal?
Usually, if the matrix at the base was not damaged. That tissue is the factory. Scratch the nail plate and it grows out clean. Damage the matrix and the new nail can come in ridged, split or thickened for good.
A single crush injury sometimes does that. So does years of an infection left alone against the matrix. It is one of the better arguments for dealing with a nail early rather than waiting to see how bad it gets.
What do I do with the nail bed while it is bare?
The skin under a nail has never been exposed to the outside world. It is thin, shiny and tender for the first few weeks, and it toughens up.
- Wash it daily with soap and water, then dry it properly, especially between the toes.
- Cover it with a plaster or a light dressing while you are in shoes, so the sock does not drag on it.
- Wear something roomy. Pressure on a bare bed is what makes it throb at night.
- Leave it uncovered at home so it can dry out.
- Keep the surrounding nail short so nothing catches.
If the nail was taken off in a clinic rather than coming away on its own, the first fortnight runs differently and there is a proper order to it, set out in toenail removal aftercare and the at-home care window.
Skip the salon while it is bare. No polish, no gel, no acrylic over an exposed bed. If you want to cover it for an event, read what to know before gluing anything to a damaged nail first.
When should you get this looked at in person?
Book an appointment, same week or sooner, for any of these:
- Diabetes, neuropathy, or poor circulation in the feet. Any of the three moves this from a nuisance to a foot at risk.
- Spreading redness, heat, pus, a red line running up the foot, or a fever.
- Pain out of proportion to how it looks, or throbbing that keeps you awake.
- A dark streak running from the cuticle to the tip that does not grow out.
- Several nails lifting at once with no injury to explain it.
- It has been six months and the line between old and new has not moved at all.
What a daily routine is for while it grows out
Nothing you put on a nail speeds up growth. What a routine does is look after the environment the new nail is arriving into: the bed, the folds, the skin around it, and the gap under the free edge where debris collects.
That gap is the awkward part. Drops and brushes sit on top of the nail. A soak reaches under the free edge and around the nail folds, which is why the EZ Clear Nails kit is built around a tray rather than a bottle on its own. Two ingredients in it, iodine and purified water, no alcohol, so it does not sting the exposed bed. It is the routine over 200 foot care clinics across North America send home with patients alongside their own trimming and debridement work.
Published work on iodine and nails is small but real. A chart review of 13 patients using a dilute povidone-iodine preparation reported 8 of 13, or 62%, culture-negative at 24 weeks. Thirteen patients is thirteen patients, and it describes the ingredient in the literature rather than any product on this site.
If a professional is already trimming or thinning the nail for you, the at-home aftercare guide covers how to fit the two together.
Frequently asked questions
Should I cut off a toenail that is falling off?
Trim the loose part back to where the nail is still firmly attached, straight across, and stop. Do not pull, peel or force it. DermNet's guidance for a lifting nail is to clip the affected portion and keep the nail short with frequent trimming, because the detached part will not reattach.
How long does it take for a toenail to grow back after falling off?
About 9 to 12 months for a big toenail and less for the smaller toes. Measured toenail growth is 1.62 mm per month in healthy young adults, and a big toenail is roughly 20 mm from cuticle to tip. Older age and reduced circulation slow it further.
What should I expect as the nail grows back?
A soft, pale, slightly ridged band coming out of the base, and a visible line where the new nail meets the old one. Expect that line to move about 1.6 mm a month and expect nothing else to happen quickly. The new nail often looks thin or wavy at first and firms up as it advances. Photograph it monthly in the same light, because month-to-month change is too small to see any other way.
My toenail is falling off but still attached. What should I do?
Leave the attached portion alone, because it is protecting the nail bed underneath. Clip back only the part that has clearly lifted and is catching on socks. Keep the toe clean and dry, cover it in shoes, and wear roomy footwear until it settles.
Why is my toenail crumbling off instead of lifting cleanly?
Crumbling points more toward a long-running infection than an injury does. A nail that lets go after a knock usually separates as one piece and stays fairly solid, while a toenail crumbling off breaks into chalky, brittle fragments with soft debris packed underneath. That pattern is worth having looked at rather than guessing about, because nail changes from psoriasis can look similar.
Does a toenail falling off mean I have a fungal infection?
Not on its own. Injury is at least as common, especially a single hard knock or repeated pressure from running and tight shoes. Thickening, yellow or brown colour and crumbly debris packed under the nail point more toward infection than a clean separation does.
Will my toenail grow back normal after it falls off?
Usually yes, provided the matrix at the base of the nail was not damaged. That is the tissue that makes the nail. If it was crushed or has been affected for a long time, the replacement nail can come in ridged, split or thicker than the original.
Is it painful when a toenail falls off?
The separation itself is usually painless, because the nail has already lifted away. The tenderness comes from the newly exposed nail bed, which has never been uncovered. It settles over a few weeks as the skin toughens, and roomy shoes make a large difference.
Can I put nail polish on while it grows back?
Not over an exposed nail bed. Wait until enough new nail has grown out to cover it, and avoid gel and acrylic over a nail that is still lifting, since the removal process puts more stress on an already loose plate.
What does the white area on a lifting toenail mean?
It is a gap. Where the nail plate has separated, there is air underneath instead of nail bed, and that reads as a well-defined white opaque area. It is not a stain, and scrubbing it will not shift it.
While it grows out
The EZ Clear Nails Kit is a soak and spray routine built around a tray, so it reaches under the free edge and around the nail folds. Two ingredients, iodine and purified water. No alcohol, no sting, no stain. Used in 200+ foot care clinics across North America, alongside professional trimming and debridement, never instead of it.
Related reading
- Side of the toenail hurts but it is not ingrown
- White spots on toenails, and what they do not mean
- How to soften and care for thick toenails at home
- Discoloured toenails: causes and when to worry
- The mistakes that keep a nail problem going
References
- Ngan V, Kong FW, Muir J. Onycholysis. DermNet, updated December 2020. dermnetnz.org/topics/onycholysis
- Yaemsiri S, Hou N, Slining MM, He K. Growth rate of human fingernails and toenails in healthy American young adults. J Eur Acad Dermatol Venereol. 2010;24(4):420-423. PMID 19744178
- Capriotti K, Stewart KP, Pelletier JP, Capriotti J. Treatment of onychomycosis with dilute topical povidone-iodine in a dimethylsulfoxide solvent system. Clin Res Trials. 2016;3(1). DOI 10.15761/CRT.1000162
About the author
Reviewed by Evan Lewis, PhD, who specialises in natural and nutritional therapies for the prevention and management of chronic diseases and complications, with a focus on chronic disease, diabetes complications, clinical nutrition, and nerve health.
This article is general information about the nail, not a diagnosis or a treatment plan. IodinePure products are cosmetics and are used alongside professional foot care, never in place of it.
