Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
Quick answer:A toenail grows back slowly — about 1 to 2 mm a month — so a fully lost nail takes roughly 6 to 12 months, and up to 18 months for the big toe. Keep the nail bed clean and protected, and see a podiatrist if the new nail grows in thick, ingrown, or deformed. Call (810) 206-1402.
The most important clinical decision with How Long Toenail Grow Back isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
How Long Does Toenail Grow Back: Quick Answer
Lost a toenail and wondering when it will grow back? The answer depends on what caused the loss and which toe was affected. We see hundreds of regrowing toenails monthly at Balance Foot and Ankle. Here is the realistic timeline by cause – and how to maximize healing.
Quick Timeline Summary
Big toenail (hallux): Full regrowth 12-18 months from total loss. Smaller toenails: Full regrowth 9-12 months from total loss. Toenails grow approximately 1mm per month – much slower than fingernails (3mm per month). Partial nail loss regrows the missing portion in proportion to how much was lost.
Regrowth After Trauma
Stubbed toe with subungual hematoma (blood under nail): Often the nail loosens and falls off in 2-6 weeks. New nail begins growing immediately and reaches full length in 9-18 months. Crushed toe with avulsed nail: Same regrowth timeline IF nail bed not significantly damaged. Severe nail bed laceration or scarring: Nail may grow back deformed (split, ridged) or never fully regrow.
Regrowth After Permanent Removal (Matricectomy)
After matricectomy with phenol (permanent ingrown nail removal): The treated portion of the nail does NOT grow back. The remaining portion of the nail bed grows a slightly narrower nail. The toe functions normally; cosmetic appearance is slightly different. This is intentional and prevents recurrent ingrown nails (95-97% success).
Regrowth After Fungal Treatment
After successful fungal nail treatment: Healthy new nail emerges from the cuticle as the diseased nail grows out. Visible improvement in 3-6 months. Full healthy replacement in 9-18 months. Even with successful treatment, some patients have permanent nail changes (thickening, ridging) due to underlying nail bed damage.
Factors That Slow Regrowth
Age: Nails grow slower after age 50. Diabetes: Reduced circulation slows growth 20-40%. Peripheral arterial disease: Significant slowing. Smoking: Reduces nail growth 25%. Malnutrition: Particularly low iron, biotin, zinc, vitamin D. Thyroid disease: Hypothyroidism slows nail growth. Cold weather/climate: Reduced circulation. Chronic illness: Cancer, autoimmune disease, kidney disease.
Factors That Speed Regrowth
Good nutrition: Adequate protein, biotin (5mg daily), iron, zinc, vitamin D. Healthy circulation: Regular exercise, no smoking. Warm climate or season. Avoid trauma to the regrowing nail. Massage the cuticle daily to stimulate growth (small studies show benefit). Topical biotin or peptide products (limited evidence but anecdotally helpful).
Caring for the Nail Bed During Regrowth
Keep the nail bed clean and dry. Apply antifungal weekly as preventative if surrounding skin or other nails have fungus. Cover with bandage for protection during high-risk activities. Avoid nail polish until nail is fully grown out (polish traps moisture and can hide problems). Wear protective footwear – closed-toe shoes for safety, wide toe box to prevent re-injury. Trim regrowing nail straight across as it grows to prevent ingrown.
Signs of Abnormal Regrowth
No new growth visible at 3 months: Suggests nail matrix damage; see podiatrist. Misshapen, split, or ridged growth: Underlying nail bed scar; may be permanent. Persistent thickening or yellowing: Possible fungal infection. Pain or drainage: Possible infection. Color changes not from trauma: Get evaluated to rule out melanoma or other concerning lesions.
When Nail Wont Grow Back
Permanent nail loss occurs after: severe matrix damage from crushing injury, extensive matricectomy for chronic conditions, severe scarring from infection or trauma, chronic ischemia from PAD. Cosmetic options: Press-on prosthetic nails, gel nails (consult podiatrist before applying to scarred bed), surgical nail bed reconstruction in select cases. Functional impact is usually minimal – toes work fine without nails. Schedule an evaluation for any nail concerns.
When Shoes Aren’t Enough — Dr. Tom’s Top 9 Orthotics
About 30% of patients I see for foot pain need MORE than a great shoe — they need a structured insole. Below: my complete 2026 orthotic ranking with pros, cons, and the specific patient I’d give each one to.
In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your toenail condition, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
Frequently Asked Questions About How Long Does Toenail Grow Back
How long does a toenail take to grow back?
Big toenail: 12-18 months for full regrowth. Smaller toenails: 9-12 months. Toenails grow about 1mm per month, much slower than fingernails.
Will my toenail grow back after it falls off?
Usually yes – if the nail matrix (root) is not damaged. New nail starts growing immediately and reaches full length in 9-18 months.
Why is my toenail growing back deformed?
Severe trauma to the nail bed causes scarring, leading to misshapen regrowth (split, ridged, thickened). Some deformities resolve over time; others are permanent.
How can I make my toenail grow back faster?
Good nutrition (protein, biotin, iron, zinc), no smoking, warm environment, avoid trauma, daily cuticle massage. Most growth-acceleration claims are exaggerated – 1mm/month is the natural maximum.
Should I take biotin to grow my toenail back?
Biotin 2.5-5mg daily may help but evidence is mixed. Make sure you have adequate iron and vitamin D first – deficiencies slow nail growth more than supplementing biotin helps.
What if my toenail does not grow back?
After 6 months of no growth, see a podiatrist. Possible causes: matrix damage, chronic ischemia, severe infection. Cosmetic options exist if nail is permanently lost.
Can I wear nail polish on a regrowing toenail?
Wait until the nail is fully grown out and well-attached (typically 6-12 months). Polish traps moisture and can hide signs of fungal infection or other problems.
Related Resources from Balance Foot & Ankle
PubMed: Toenail Regrowth Timeline
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.