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Calcimator

Hook Size Calculator

Find the right hook size and style for your target species, bait type, and bait size.

Inputs

Results

Recommended Hook Size

1

Hook Style4
Gap Width12.2 mm
Hook Strength5 / 10
How to Use This Calculator
  1. Select your target species from panfish/crappie up to pike and catfish.
  2. Choose your bait type: live bait, artificial lure, or fly — each calls for a different hook style.
  3. Select the bait size (small, medium, or large) to proportion the hook correctly.
  4. Read Recommended Hook Size — positive numbers are standard sizes; zero or negative values indicate 1/0, 2/0, etc.
  5. Note the Hook Style code: 1=Aberdeen, 2=Octopus, 3=Circle, 4=Wide Gap, 5=Treble.
  6. Use Gap Width (mm) and Hook Strength to confirm the hook matches your fishing line and target species.

What each input means

Target Species
The species you are targeting. Larger predatory fish require bigger, stronger hooks.
Bait Type
Live bait uses single hooks; artificial lures often have trebles; fly hooks are specialized.
Bait Size
Match hook size to bait size. The hook should be proportional to present the bait naturally.

What each result means

Recommended Hook Size
Positive numbers are standard sizes (larger number = smaller hook). Zero or negative means 1/0, 2/0, etc. (larger hooks).
Hook Style
Recommended style: 1=Aberdeen, 2=Octopus, 3=Circle, 4=Wide Gap, 5=Treble.
Gap Width
Approximate distance between the hook point and the shank in millimeters.
Hook Strength
Relative strength rating of the recommended hook for fighting fish.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Target Species = 2, Bait Type = 0, Bait Size = 1 = 3 input(s) provided
  2. Calculate Recommended Hook Size
    Recommended Hook Size
    1 = 1
  3. Calculate Hook Style
    Hook Style
    4 = 4
  4. Calculate Gap Width
    12.2 = 12.2

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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