Most people should cut their toenails every six to eight weeks. Toenails grow roughly 1.6 millimeters per month, which is less than half the speed of fingernails, so they need far less frequent attention. That said, the right schedule for you depends on your age, activity level, and whether you have any health conditions that affect your feet.
Why Every Six to Eight Weeks Works
At an average growth rate of about 1.6 mm per month, toenails take roughly six to eight weeks to reach the point where they need trimming. By that time, most people have enough length beyond the tip of the toe that the nail could start catching on socks or pressing against shoes. You want to trim before that happens, but not so aggressively that you cut into the skin.
This rate isn’t constant across your lifetime. Nail growth peaks in your twenties and then slows by about 0.5% per year as you age. A 60-year-old’s toenails grow noticeably slower than a teenager’s, which means older adults can often go longer between trims. Children and teens, on the other hand, may need a cut closer to every four to six weeks. If you’re physically active and on your feet a lot, you’ll also want to check your nails more often, since pressure from athletic shoes can push nails into surrounding skin if they’re too long.
One factor that doesn’t seem to matter much is the season. A study of nail growth in Antarctic conditions found no significant difference between warmer and colder months, suggesting that each person has a fairly stable individual growth rate regardless of climate.
How to Cut Them Correctly
Frequency matters less than technique. The single most important rule: cut straight across. Don’t round the corners or curve the cut to follow the shape of your toe. You want to leave enough length so that the corners of the nail sit loosely against the skin on either side, rather than digging into it. A good visual check is that you should see a thin white edge of nail extending just past the skin at the tip.
After cutting, use a nail file to gently smooth any sharp or jagged edges. This prevents the nail from snagging on socks or bedsheets, which can cause small tears that lead to uneven regrowth. File in one direction rather than sawing back and forth for a cleaner edge.
Use a proper toenail clipper, not fingernail scissors or a regular clipper that’s too small. Toenails are thicker and denser than fingernails, and a tool that’s too small forces you to make multiple cuts, which increases the chance of creating rough, angled edges. If your nails are especially thick or tough, soaking your feet in warm water for 10 minutes beforehand softens them and makes cutting easier.
What Happens When You Cut Too Short
Cutting toenails too short is the most common cause of ingrown toenails. When you trim too aggressively, the skin on either side of the nail folds over the corner. As the nail regrows, it pushes directly into that skin rather than growing over it. The result is pain, swelling, and redness along the edge of the nail, most often on the big toe.
Ripping or tearing nails instead of cutting them cleanly creates the same problem. A torn nail loses its defined corners, so the regrowth has no clear path and burrows into surrounding tissue. Rounding the corners during trimming has a similar effect: the nail edge curves downward into the skin as it grows out.
An ingrown nail that breaks the skin creates an entry point for bacteria. Feet spend most of the day in warm, enclosed shoes, which is an ideal environment for infection. Signs that an ingrown nail has become infected include increasing pain, pus or fluid draining from the area, warmth around the toe, and a noticeable odor. Most mild ingrown nails resolve on their own if you soak the foot and let the nail grow out, but an infected one typically needs professional treatment.
Adjustments for Diabetes and Circulation Issues
If you have diabetes, foot care takes on extra significance because reduced blood flow and nerve damage (common complications of the disease) make it harder to feel injuries and slower to heal from them. A small cut from aggressive nail trimming that would be minor for most people can become a serious wound for someone with diabetes.
The American Diabetes Association recommends inspecting your feet daily for sores, cuts, blisters, and redness. When it comes to toenails, the same straight-across technique applies, but with even more caution. Many diabetes care teams recommend having a podiatrist handle nail trimming rather than doing it yourself, especially if you have any numbness in your feet. If you can’t feel the pressure of the clipper against your skin, it’s easy to nick yourself without realizing it.
People with peripheral artery disease or other conditions that reduce circulation to the feet should take similar precautions. Poor blood flow means slower healing and a higher risk of infection from even minor wounds.
Signs You’re Waiting Too Long
Nails that extend well past the tip of the toe are more than a cosmetic issue. Long toenails catch on socks and shoes, which can cause the nail to partially lift from the nail bed. This is painful and creates a gap where fungi and bacteria can settle. Long nails also press against the front of closed-toe shoes, which puts repeated pressure on the nail bed and can cause bruising underneath the nail (the dark discoloration runners sometimes notice).
If you’re regularly noticing discomfort in your toes when wearing shoes, your nails are probably overdue for a trim. A good habit is to check your toenails whenever you check your fingernails. Since fingernails grow about twice as fast, you’ll likely trim your fingernails two or three times for every toenail session, but the visual check keeps you from forgetting about your feet entirely.