
Nail file grit refers to how coarse and abrasive a nail file is. The numbers on nail files, typically between 60 and 1000, indicate how coarse the file is. The lower the number, the coarser the file. For example, a 100/100 grit file means both sides are the same, while a 100/180 grit file will have one side with a softer grit than the other.
| Characteristics | Values |
|---|---|
| Abrasiveness | The lower the number, the more abrasive the file is |
| Coarseness | The lower the number, the coarser the file is |
| Grain size | The higher the number, the smaller the grains of sand |
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What You'll Learn

Nail file grit refers to how coarse and abrasive a nail file is
If you see two numbers, you’re likely looking at a double-sided file. A 100/100 grit file means both sides are the same. A 100/180 grit file, on the other hand, will have one side with a softer grit than the other. The higher the number, the smoother the file grit.
You may also see them labelled as simply “coarse,” “medium,” or “fine.” A fine, 1000-grit file would take serious elbow grease (or, more likely, it would break) when tasked with shaping acrylics. In other words: You need the right tool for the job at hand.
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The lower the number, the more abrasive the file is
Nail file grit refers to how coarse and abrasive a nail file is. The lower the number, the more abrasive the file is. For example, an 80-grit nail file is more abrasive and can tear apart and damage natural nails. On the other hand, a fine, 1000-grit file would take serious elbow grease when tasked with shaping acrylics.
The numbers on a nail file refer to how coarse the grit is on the nail file surface, or more specifically, the size of each grain. The smaller the grains of sand, the more fit into a square inch, and the higher the grit or smoothness. So, if you see a file labelled 100/100, it means both sides are the same. If you see a file labelled 100/180, it means one side has a softer grit than the other.
It's important to choose the right nail file for the job at hand. If you're using a file on natural nails, you'll want to opt for a less abrasive file to prevent damage. However, if you're shaping acrylic nails, you'll need a finer, more abrasive file.
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A file with a higher number is smoother
Nail file grit refers to how coarse and abrasive a nail file is. The lower the number, the more abrasive the file is. An 80-grit nail file, for example, is more likely to damage natural nails. A file with a higher number, such as 1000-grit, is smoother and less likely to cause damage. This is because the higher the number, the smaller the grains of sand, and the more that fit into a square inch.
The numbers on a nail file refer to the size of each grain of sand on the file. If you see two numbers, this means the file is double-sided, with a different grit on each side. For example, a 100/100 grit file means both sides are the same, whereas a 100/180 grit file will have one side with a softer grit than the other.
It's important to choose the right nail file for the job at hand. A very fine, high-grit file may be suitable for natural nails but would not be effective for shaping acrylics.
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You'll see files labelled by number, typically between 60 and 1000
Nail file grit refers to how coarse and abrasive a nail file is. You’ll see files labelled by number, typically between 60 and 1000. The lower the number, the more abrasive the file is. An 80-grit nail file, for example, is more abrasive and can tear apart and damage natural nails.
If you see two numbers, you’re likely looking at a double-sided file. For example, a 100/100 grit file means both sides are the same. A 100/180 grit file, on the other hand, will have one side with a softer grit than the other. The higher the number, the smoother the file grit.
You may also see them labelled as simply “coarse,” “medium,” or “fine.”. A fine, 1000-grit file would take serious elbow grease (or, more likely, it would break) when tasked with shaping acrylics.
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If you see two numbers, you're likely looking at a double-sided file
Nail file grit refers to how coarse and abrasive a nail file is. You’ll see files labelled by number, typically between 60 and 1000. If you see two numbers, you’re likely looking at a double-sided file. The lower the number, the more abrasive the file is. For example, a 100/100 grit file means both sides are the same. A 100/180 grit file, on the other hand, will have one side with a softer grit than the other. The higher the number, the smoother the file grit. So, an 80-grit nail file (more abrasive) can tear apart and damage natural nails. A fine, 1000-grit file would take serious elbow grease (or, more likely, it would break) when tasked with shaping acrylics.
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Frequently asked questions
Nail file grit refers to how coarse and abrasive a nail file is. The lower the number, the more abrasive the file is.
The numbers refer to how coarse the grit is on the nail file surface, or more correctly, the size of each grain. The smaller the grains of sand, the more fit into a square inch and the higher the grit or smoothness.
A 100/100 grit file means both sides are the same. A 100/180 grit file, on the other hand, will have one side with a softer grit than the other.











































