What Are The Treble Hook Sizes?

When it comes to fishing, having the right equipment is crucial for success, and treble hooks play a significant role in hooking and landing fish. But what are treble hook sizes, and how do they impact your fishing experience?

In this article, I will discuss the different treble hook sizes available, how to select the right size for your fishing needs, and some tips on how to use treble hooks effectively.

Common Treble Hook Sizes

Treble hooks are available in a wide range of sizes, with each size denoted by a number. The numbering system may vary between manufacturers, but the general rule is that the larger the number, the smaller the treble hook. The most common treble hook sizes used by anglers include:

Size 14 to 16

These smaller treble hooks are suitable for targeting panfish, trout, and other small species. They are commonly used with lightweight lures or baits and are ideal for finesse fishing techniques.

Size 10 to 12

Treble hooks in this size range are versatile and can be used for a wide range of freshwater fishing applications. They are suitable for targeting bass, walleye, pike, and similar-sized species.

Size 6 to 8

These treble hooks are larger and are often used for fishing larger predatory species such as musky, salmon, and larger saltwater fish. They can handle larger baits and lures and provide improved hooking power.

Size 2 to 4

The larger treble hooks in this size range are designed for heavy-duty applications, including deep-sea fishing or targeting trophy-sized fish. They offer excellent strength and hooking capability, ensuring you have a better chance of landing that trophy catch.

Treble Hook Size Conversion Chart

To provide a comprehensive overview, here is a general treble hook size conversion chart:

Hook SizeMeasurement (inches)
101 1/8
81 1/4
61 3/8
41 1/2
21 3/4
11 7/8
2/02 1/4
3/02 1/2
4/02 3/4

This conversion chart can be used as a reference when choosing treble hook sizes, especially when dealing with different measurement systems.

Explaining Treble Hook Sizes

Don’t worry if you don’t understand the treble hook size chart! If you have questions about hook sizes, I’m here to help. In addressing these questions, I hope to simplify the process of understanding and utilizing the chart. 

What is the size of a size 4 treble hook?

A treble hook that’s classified as size 4 typically has 0.87 inches (22.10mm) of height. Additionally, it has a gap of 0.35 inches (8.89mm) wide and a gap height of 0.39 inches (9.91mm).

What is the difference between a #2 and a #4 treble hook?

According to the treble hook size chart, the #2 hook is larger than the #4 hook. This is evident from the fact that the #2 hook has a greater height of 0.95 inches and width of 0.43 inches compared to the #4 hook, which has a height of 0.87 inches and a width of 0.35 inches.

Hooks are bigger with a smaller number!

Parts of Treble Hook

A treble hook is a type of fishing hook that consists of three hooks joined together by a single shank. The three hooks are arranged in a triangular pattern, with one hook pointing straight out from the shank and the other two hooks angled slightly inward.

Parts of Treble Hook

The parts of a treble hook are:

  1. Shank: The straight metal rod that connects the three hooks together.
  2. Eye: The loop at the top of the shank that allows the hook to be attached to a fishing line or lure.
  3. Bend: The curved section of each hook forms a triangle shape.
  4. Point: The sharp end of each hook penetrates the fish’s mouth.
  5. Barb: The small ridge or hook-like protrusion near the point of each hook prevents the fish from easily escaping once it’s been hooked.
  6. Gap: The space between the point and the shank where the fish’s mouth fits when the hook is set.

Selecting the Right Treble Hook Size

Selecting the right treble hook size can significantly impact your fishing success. To make an informed decision, consider the following steps:

  1. Identify the target fish species and their mouth size.
  2. Determine the size of the bait or lure you plan to use.
  3. Consider the fishing technique you will employ.
  4. Evaluate the fishing environment, including water depth and clarity.

By taking these factors into account, you can narrow down the appropriate treble hook size range for your specific fishing scenario.


How are treble hooks sized?

Treble hooks are sized based on the distance between the point of the hook and the shank.

What is the measurement of hook sizes?

Hook sizes are measured in numbers, with larger numbers indicating smaller hooks (i.e. a size 1 hook is larger than a size 10 hook).

How big is a size 4 treble hook?

A size 4 treble hook has a distance of approximately 15mm between the point and the shank.

How big is a number 20 treble hook?

A number 20 treble hook has a distance of approximately 6mm between the point and the shank.

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