Choosing the right chainsaw bar size is one of the most important parts of buying a chainsaw. A larger bar is not always better — and choosing the wrong size can make cutting harder, less efficient, and more difficult to control.
In this guide, we’ll explain what different chainsaw bar lengths are designed for and help you choose the right size for your type of work.
What Does Chainsaw Bar Length Mean?
The bar length refers to the usable cutting length of the chainsaw blade.
Common chainsaw bar sizes include:
- 12”
- 14”
- 15”
- 16”
- 18”
- 20”
- 24”+
- 28”+
- 36”
The correct size depends on:
- the type of wood being cut
- tree size
- frequency of use
- user experience
- whether the saw is for domestic or professional use
12–14” Chainsaw Bars – Best for Light Garden Work
Smaller bar lengths are ideal for:
- pruning
- trimming branches
- cutting smaller logs
- light garden maintenance
These chainsaws are usually:
- lighter
- easier to control
- less tiring to use
Smaller domestic chainsaws are often the best option for homeowners who only use a chainsaw occasionally.
15–18” Chainsaw Bars – The Best All-Round Size
For many homeowners and landowners, a 15–18” bar is the ideal all-round choice.
This size range is excellent for:
- firewood cutting
- storm cleanup
- small tree felling
- general property maintenance
These chainsaws offer a strong balance between:
- cutting power
- manoeuvrability
- versatility
Many popular domestic and semi-professional chainsaws fall into this category.
20”+ Chainsaw Bars – Heavy-Duty Cutting
Larger chainsaw bars are designed for:
- larger trees
- heavy timber
- forestry work
- professional cutting applications
These saws are typically:
- more powerful
- heavier
- designed for experienced users
Professional chainsaws with 20”+ bars are commonly used by:
- forestry workers
- tree surgeons
- commercial users
Is a Bigger Chainsaw Always Better?
Not necessarily.
Larger chainsaw bars:
- increase weight
- reduce manoeuvrability
- require more engine power
- can be harder to control for inexperienced users
Choosing a chainsaw that is too large for your typical work can actually make cutting more difficult.
For many homeowners, a 14”–18” chainsaw is more than enough for general garden and property maintenance.
Domestic vs Professional Chainsaws
Bar length is also closely linked to the type of chainsaw.
Domestic Chainsaws
Usually feature:
- smaller bar sizes
- lighter designs
- easier handling
- lower weight
Ideal for:
- homeowners
- occasional use
- general garden work
Professional Chainsaws
Usually feature:
- larger bar lengths
- more powerful engines
- faster chain speeds
- heavy-duty construction
Ideal for:
- forestry
- commercial cutting
- frequent use
- large timber
Which Chainsaw Bar Size Should You Choose?
As a simple guide:
12–14”
Best for:
- pruning
- light garden work
- occasional use
15–18”
Best for:
- firewood
- general property maintenance
- all-round domestic use
20”+
Best for:
- forestry
- large trees
- professional cutting
Choosing the correct chainsaw bar size will help improve:
- safety
- cutting performance
- comfort
- overall control
Browse our Chainsaws collection to explore domestic and professional chainsaws in a range of bar lengths suitable for every type of cutting work.
