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Chainsaw Chain Size Guide

Find the Right Chain size for Your Saw

Choosing the correct chainsaw chain is critical. The wrong chain won’t fit, won’t cut properly, and can be unsafe to use.

If you’re unsure what size chainsaw chain you need, this guide will help you understand the basics — and if you still can’t determine it, you can submit the form below and we’ll help you identify the correct chain for your saw.

Why Chain Size Matters

Chainsaw chains are not universal. Even saws that look similar can require completely different chains.

Using the wrong chain can result in:

  • Poor cutting performance

  • Excessive wear on the bar and sprocket

  • Increased kickback risk

  • A chain that simply won’t fit your bar

Getting the size right from the start saves time, money, and frustration.

3 Things You Must Know to correctly size a chainsaw chain

1. Chain Pitch

The pitch is the distance between 3 rivets measure this ÷ 2 to find the pitch common pitches include:

  • 1/4″

  • .325″

  • 3/8″

  • .404″

This information is often stamped on the guide bar or listed in the chainsaw manual. Once you have this write it down.

How to measure chainsaw chain pitch

2. Chain Gauge

The gauge is the thickness of the drive links that fit into the guide bar groove.

Common gauges include:

  • .043″

  • .050″

  • .058″

  • .063″

If the gauge is wrong, the chain will either be too loose or won’t fit into the bar at all.

How to measure chainsaw chain gauge

3. Number of Drive Links

The drive links are the teeth on the inside of the chain that sit inside the bar count these to find the chain length you need.

The exact number of drive links is required. 

This number is often stamped on the guide bar or can be counted directly on the chain. Once you have drive link number write it down.

How to count chainsaw chain drive links

Still Not Sure? We Can Help

If you can’t confidently identify your chainsaw chain size, fill out the form below. Provide as much information as you can, and we’ll help determine the correct chain for your saw.

This service is ideal for:

  • Homeowners and DIY users

  • Rural property owners

  • People replacing a worn or broken chain

  • Anyone unsure about pitch, gauge, or drive links

Fill in the form below and we will find you the right chain!

Let's find your Chainsaw Chain?

We’ll help identify the correct chain size for your saw.

This field is for validation purposes and should be left unchanged.
Chainsaw Brand?(Required)
e.g. MS 170, 455 Rancher - Skip if you know chain size
Already know the chain size - skip this!
Chain Type Preference(Required)
Chain Pitch
Not sure of Pitch? read section 1. top of page
Chain Gauge
Not sure of Gauge? read section 2. top of page
Drive link are on the bottom of the chain
Name

Important Notes

  • We do not guess chain sizes — accuracy depends on the information provided

  • If details are unclear, we may contact you for clarification

  • Response times are typically within 1–2 business days

Pro Tip

If you plan to keep spare chains, write the pitch, gauge, and drive link count on the chainsaw or bar cover for future reference.