Informational Guide

How To Sharpen Fish Hooks

Discover how to sharpen fishhooks safely and effectively, and why it is essential before hitting the water and catching some fish.

by Andrew

Informational Guide

How To Sharpen Fish Hooks

Discover how to sharpen fishhooks safely and effectively, and why it is essential before hitting the water and catching some fish.

by Andrew

by Andrew

Fishing hooks are some of the most vital gear in your tackle box, but few anglers think about maintaining and sharpening them.

In this guide, learn how to sharpen fish hooks safely and effectively, and why you shouldn’t skip this important step before hitting the water.  

The sharper the hook, the quicker and cleaner it will pierce the fish.  On the other hand, dull hooks can dislodge before the point actually penetrates the fish—letting your catch swim off with a free meal. 

Another benefit of sharpening your fish hooks is that baiting them is a little easier, resulting in less mess and improved attachment. Dull hooks sometimes require “worrying” the bait on, which makes larger holes. 

Not only is this more work for you, but it can also be dangerous: having to press bait onto the hook more firmly increases the odds it’ll slip and pierce your fingertips.  

hooks and lures

How To Know When Your Hooks Need Sharpening

The quickest method for evaluating the sharpness of a fish hook is to lightly drag it across your fingernail. 

If it glides smoothly, it's definitely time to sharpen it.

If it lightly scratches it, you might decide to sharpen it now or leave it alone a bit longer.

Sharp fish hooks will catch the nail slightly and not drag across. 

Another way to tell if your hooks are dull is by seeing how they perform in the water.

Lots of lost catches can be a sign your hook isn't sharp enough to set before the fish gets away.  

Fish lure

Evaluating & Cleaning Rusty Fish Hooks 

Rust indicates over-exposure and is usually accompanied by dullness. They’re also unsafe, as accidentally scraping or puncturing yourself with a dirty hook can lead to tetanus.  

Fish will still bite rusted hooks, but the strength of the metal has been compromised. This can result in bending or breakage from powerful catches. 

You can clean rusty fish hooks with an acid like vinegar or lemon and some sandpaper, or even a Dremel tool. Most anglers agree this is worthwhile for large hooks, but not small ones; for extremely rusted hooks, consider purchasing a new set instead.  

What You Need To Sharpen Fish Hooks 

Not only is sharpening fish hooks simple, but it also doesn't require much in the way of supplies. Here are some tools you can use to get your hooks sharp again:  

Fishing Hook File

This tool is a simple handle with a sharpening stone attached. Files vary in prices based on brands and materials, but even inexpensive ones can be effective. 

Battery-Powered Sharpener

Instead of manually sharpening your hooks, you can use one that runs on batteries. These typically have a place to insert the point of your hook; inside, it sharpens it back to a perfect point. Others, however, have the sharpening stone exposed. As a result, they rotate quickly while you hold your hook point against it. 

Keychain Stone

Also called a hook hone or touch-up stone, these are small versions of a standard fishing hook file and may or may not have a handle. They have a groove down the center to make sharpening easier, with a cord or chain threaded through one end to attach it to your person or a tackle bag. 

Knife Whetstone

Yes, you can use the same stones you’d use for knives to sharpen your fish hooks.  Even a sturdy nail file will work in a pinch. The only downside to using these tools is that they aren't constructed with fish hooks in mind, so the grit might be too much or not enough. This means you could over sharpen (and therefore weaken) your hook or not get it sharp enough for the amount of effort you put in. 

How To Sharpen Fish Hooks In 4 Easy Steps 

Before you sharpen your fish hooks, take some safety precautions to avoid injury. Make sure your hands are steady and keep battery-powered files away from lines and long hair.

Sharpen your hooks in adequate lighting. Finally, throw out stones that are too smooth or filled with metal shavings since they won't be very effective.  

1. Prepare

Clean your hooks before you begin. Position your sharpener of choice in one hand and your hook in the other with the point against the stone. 

2. Plane it down

Using even elongated strokes, push the hook up the stone from the barb to the point. Do this until you've created a plane (a flat surface that angles to the point of the hook). 

3. Turn the hook over & repeat

You want the edges of these planes to meet on the top of the point. 

4. Flip the hook & repeat

This time, you’ll file that edge where the planes meet, essentially forming a triangle. The tip of your hook should be a point, but not so thin it’ll break.  

Note: If you’re using a battery-powered hook sharpener that requires inserting the hook tip, it will file the point for you; no additional steps are needed.  

tying fish hook

Over-Sharpening Your Fish Hooks? Is It Possible? 

It is possible to over-sharpen your hooks, especially if you’ve had them a while and were very diligent with sharpening.

The simple truth is that sharpening translates to filing—removing some of the metal a little at a time. The more you sharpen the hook, the less metal it has and the thinner it gets. 

While it's true that sharpness is vital to a hook's efficacy, strength is just as important. If your point can easily be bent with your fingers, it's over-sharpened. You don't want it to bend in a fish's mouth or upon removal. 

If you’ve over-sharpened your hooks, there’s not much you can do to fix them. The best course of action is to recycle them and purchase a new set.  

People Also Ask (FAQs)

Can you sharpen fish hooks with coatings?  

Yes, but be aware that each sharpening will remove more and more of that coating over time.  Coatings on fish hooks are meant to prevent rust, so you’ll have to be more vigilant about rinsing and drying your hooks after use.  

How are fish hooks chemically sharpened? 

During the manufacturing process, fish hooks are heat-treated and then chemically treated to thin the metal (essentially via controlled corrosion) and produce a very sharp point. 

This process is a tough balance to get right, as too much chemical exposure can weaken the hook’s barb or shaft, resulting in easy breakage or bending. If you purchase chemically sharpened fish hooks, go with a reputable brand that’s reviewed well by other anglers.  

What are the smallest fishing hooks? 

The smallest fish hooks you can purchase are size 32, known as micro hooks. They’re so tiny, you could fit several across your fingertip. Other micro hooks you’ll find are a bit bigger, however, and meant for fly fishing, wherein an angler quickly casts across the surface of the water to mimic insects landing (such as flies).  

How big is a #6 hook? 

These hooks measure just under an inch (5/8” to 7/8”), and are good for panfish, crappie, and other common fish.  Keep in mind that a #6 is different from a 6/0, which is considerably larger and meant for very large, powerful catches.  


New anglers—and even experienced ones—might not think about sharpening their hooks that often, but this simple step can help you land significantly more fish than you’d think. Sharpened hooks set easier, are safer to use and remove, and provide a cleaner piercing than dull or worn fish hooks ever could.