How To Measure Chainsaw Bar Without Errors!

How To Measure Chainsaw Bar Without ErrorsPower tools make our work easier. But if they are not in the right position, you can’t expect good work. Ever been through a situation where you used a wrong chain on your chainsaw? It’s like getting a meaningful reminder that proper dimension matters for best results.

A chainsaw is one of the best examples out there. If you don’t have proper measurement about your chainsaw bar, forget about good results.

The bar itself seems really tiny, but its importance is never small. It’s a very critical part of the whole tool to give proper functionality. So, it’s essential for you to measure and determine the size.

Also, anyone who needs to deal with this should have a good idea on how to measure chainsaw bar. Dealing with such a tiny part isn’t really hard but definitely needs a proper method. Let’s know more about it!

Learn Some Basic Terms!

It’s important to have knowledge about chainsaw anatomy. This will help you better to understand the procedure.

A chainsaw is actually one of the most used and important tools for a number of tasks. It could be used for plumping, construction and many more.

It comes with a piece that has the shape of an oval. The structure usually comes out from its main motor of saw.

This is known to be a chainsaw bar. This piece usually helps to rotate the saw chain around itself. It is one crucial part that keeps the chain in place. So that stable positioning and velocity are possible. Here are some common terms you should know.

  • The distance between two ends of bar is known as its full length.
  • The distance between casing to tip on a bar is known as cutting length.
  • There should be some link on the chain, its amount is known as tooth count.
  • Get the distance for centers of three rivets and divide it by two. This is the pitch.
  • Grooves width is known to be the gauge.


  • Get a measurement tape for the procedure. Any measuring tape will be fine.
  • You’ll also need a ratchet.
  • Be sure to check the manual.
  • You should deal with the tool when it gets cool. Don’t try to measure a hot bar at any cost.
  • Also, wear safety gloves while doing the steps.
  • You should not be doing anything that can harm the tool.
  • Deal with the following steps with precaution and care.

Turn Off Power Input & Get Spark Plug Out!

To begin with the procedure, you need to take out power plug of chainsaw. Make sure the spark plug is off also. There should be the spark plug behind power outlet. You should make sure every power input is disconnected. Otherwise, it becomes quite risky when the chainsaw turns on while you are dealing with it.

The Cutting Length Measurement!

I have told you already what cutting length means. You should start putting measuring tape at the area where the bar disappears. Now go up to the very tip of chainsaw bar and hold it well.

You should be able to see the measurement size now. It may not be in round figures for now. Try noting down the nearest round figure for ease.

Let’s go through an example for better understanding. Suppose the measurement is something like 16.4/5 inches. You should consider the nearest figure 17 and note it down for following procedures. Most of the time bar lengths are 20, 18 or 16 inches.

Noting Down the Full Length!

Once you are done with getting the cutting length it’s time to know how to measure chainsaw size. Yes, we will be noting down the full length. This will be our substantive measurement.

To go with this step, you need to find a case. It should be grabbing the screws. Now simply get a ratchet. You need to loosen each screw using it. The entire bar should be noticeable now.

Now you need to use the measurement tape once again. Measure down distance from very end up to the tip of the chainsaw bar. There should be some differences between cutting length and full length. It’s most of the time around two or three inches.

This is the actual length of your chainsaw bar.

Make Sure to Note Accurately!

You should make sure the measurements are as accurate as possible. Keep away from any kind of guesswork when measuring the chainsaw bar. Otherwise, you’ll have to replace it once again which will be really frustrating.

Using Alternative for Measuring Tape!

If you can’t use a measuring tape, try a stick or ruler assisted by some rope. You can use the rope as a tape measure. You may also need a marker to make a mark where the measurement ends in rope. Once you are done measuring with rope use the yard-stick.

It is time to replace the thing easily now. You will find so many stores offering replacement bars. Some online marketplace will also have good deals.

Some Other Ways!

Before going into such hassles of measuring chainsaw bar you can try some simple things. Sometimes the chainsaw model already comes with length. There are famous brands who come up like five-digit code to give details about specialty, cutter shape, type, gauge, and pitch.

Some might not tell you directly the information. For that case, you can try reading the manual beforehand. It may have the length.

There are some brands who come up with online databases to give such information. So that you can easily have a reference parts number.


Chain should properly fit your chainsaw. If it does not then the measurement is not right. Try again. Otherwise, it can be quite dangerous. If you can’t deal with it yourself, get professional help.

You should make sure to read manual for the correct type of chain. Also, before handling the chain you should make sure the chainsaw never starts by itself. This can cause serious injuries later.

A Quick Glance!

If you can’t go through the entire article and need a short solution, here are some basic notes how to measure your chainsaw bar length.

Main objective here is to make sure the bar length ideally fits with saw. Those who are not in a hurry, get yourself something to drink and read the whole article. No confusions will be left unsorted!

  • Check the manual for safety guidance
  • Get Measurement tape, ratchet, and chainsaw itself.
  • Get rid of any kind of power input into your chainsaw. Make sure everything is off.
  • Using measurement tape note down cutting length of the chainsaw bar.
  • Using measurement tape note down the full length of the chainsaw bar.
  • Be sure the measurements are as accurate as possible.


Complicated tools like a chainsaw can be a hard nut to crack sometimes. You will meet so many perplexing features. This makes trial and errors come across you many times. But at some point, you’ll grab the certain level of skill.

Measuring such values are pretty simple when you got the right levels. Always opt for measurement tapes or other tools that are free from errors. A slight error in measurement might ruin the overall purpose completely.

As a workman, be sure these simple things don’t become an obstacle for you later. Good Luck!