Types of Chainsaws: Which One Do You Need?

Every chainsaw you can buy is a point in four dimensions at once, and each dimension answers a different question. Power source tells you where the energy comes from and what it costs you in noise, fuel or cords. Handle configuration tells you how you hold the saw and whether it is built for the ground or for working aloft. Reach and form factor tell you how far the cutting head is from your hands. Duty class tells you how hard and how often the saw is built to run.

Take two saws that look similar on a shelf. A 16-inch, 40V, rear-handle, homeowner saw and a 14-inch, 50 cc, top-handle, arborist saw belong to the same object class, yet they share almost nothing in use. One is a quiet yard tool you carry in one hand between cuts; the other is a climbing saw that a trained arborist runs with both hands in a tree. Describing either as simply "a chainsaw" hides everything that matters.

This is also why the counts disagree. A page that sorts by power source lands on three types. A page that sorts by form factor lands on five or six. A page that mixes the two without saying so lands on eight or nine and leaves you no closer to a decision. Once you know which axis a list is using, the lists stop contradicting each other.

Motorized wood-cutting chainsaws and motorized pole saws for homeowners and outdoor users are the scope here. Concrete saws, utility and rescue saws, circular saws, reciprocating saws, hand saws, loppers and pruners are different tool classes and stay out of scope.

Power source is the axis most buyers start with, and it decides more about your day than any other: how loud the work is, what you carry to the job, and what happens when the saw stops.

Gas chainsaws

A gas saw runs a two-stroke engine on a fuel mix of 40:1 to 50:1 and starts with a pull cord. Engines are sized by displacement in cc, with homeowner saws typically between 30 and 50 cc and anything above 50 cc in experienced or professional territory. Gas turns the chain at higher speed but lower torque than electric, which is why it feels aggressive in small wood and why it keeps pulling in big wood.

The costs are real. A gas saw runs at 100 to 120 dB at the operator's ear, well past the 85 dB threshold where hearing damage begins, so hearing protection is not optional. It produces carbon monoxide and must never run indoors or in a closed garage. It also needs fuel care: if you use it a few times a year, drain the tank and add a stabilizer, or the carburetor gums up and the saw will not start next spring.

Gas still wins when you need a bar over 20 in, when there is no way to charge batteries where you work, for all-day continuous running such as firewood cutting or lumber milling, and for anyone who simply prefers a gas engine. It is also worth being fair about the other side. A gas saw idles and burns fuel while you drag brush to a pile, where a battery saw is silent between cuts.

Corded electric chainsaws

Corded saws use 8 to 15 amp motors and are the cheapest way into a chainsaw. Runtime is unlimited, the saw is the lightest full-size option, and there is no battery to degrade on a shelf. The catch is the cord. Plan on a 14-gauge cord up to 50 ft or a 12-gauge cord up to 100 ft, and never daisy-chain cords together, which is a fire risk.

A corded saw cannot be used in wet weather, and it is one of only two types (with battery) that is safe to run indoors, which matters if you carve in a workshop. For a suburban lot with an outdoor outlet and a modest amount of cutting, it does the job without fuss.

Battery and cordless chainsaws

Battery saws run on systems from 18V to 80V, and brushless motors are markedly more efficient than brushed ones. Voltage is not a power ranking. Power is voltage times current minus losses, so a well-designed 56V system can match or beat an 80V one. Think of amp-hours as the size of the tank and voltage as the pressure; watt-hours, voltage times amp-hours, is the honest way to compare across brands.

Expect 30 to 40 minutes of semi-continuous cutting per charge and roughly an hour to recharge on many systems, with some taking 1 to 4 hours. The best battery saws cut a 10-inch oak beam well over 100 times on a single charge. The reframe that matters for a homeowner is that most jobs are minutes of actual cutting, not hours of running, and a battery saw is not idling while you move brush. Cut until the battery dies, split and stack while it charges, then pick it back up; a second battery shortens the wait.

Batteries are shared across a maker's tools, so the platform you commit to matters as much as the saw itself.

Handle layout decides how you hold the saw and what kind of work it is built for. It is also where the safety differences between types are sharpest.

Rear-handle chainsaws

The rear-handle saw is the default and the safe default. You get a C-shaped handle at the back, a wraparound front handle and a front hand guard, and you run it with two hands. It is built for ground work: felling, bucking, limbing and firewood.

Top-handle chainsaws

A top-handle saw puts the handle in line with the bar, which makes it compact and balanced for working in a tree or from a lift bucket. This is an arborist tool, not a ground saw. The relevant standards are explicit: ANSI Z133 requires two hands on the saw at all times with thumbs wrapped, and several state and national safety bodies state that top-handled saws shall not be used on the ground and that no chainsaw is designed for one-handed use. With a single in-line handle, controlling kickback is harder than on a rear-handle saw. Leave these to trained arborists working aloft.

One-hand pruning and mini chainsaws

A one-hand pruning saw has a 6 to 8 in bar, weighs as little as 3.4 lb and is designed to be used one-handed on branches. What makes that defensible is the tip guard and enclosed nose, which keep the kickback zone covered. It cuts branches up to roughly 4 to 6 in. This is the key difference from a true top-handle arborist saw, and it resolves the contradiction you meet elsewhere: one-hand pruning saws are recommended for homeowners while top-handle saws are for pros only, because they are not the same tool.

Two-handed mini chainsaws

Two-handed minis carry 10 to 12 in bars and give you more control and leverage than a one-hand saw. They handle thicker limbs, storm debris and light firewood. "Mini chainsaw" has no official definition, but the term generally means a bar of 10 in or shorter.

Form factor is about how far the cutting head sits from your hands and how much saw you are carrying when you get there.

Mini and pruning saws

These run 6 to 10 in bars and split into the one-hand and two-hand styles described above. They are the right tool for branches, vines and small storm debris, and the wrong tool for felling anything of size.

Standard rear-handle saws

With 14 to 20 in bars, this is the workhorse of the category: felling small to medium trees, bucking logs, cutting firewood.

Pole saws

A pole saw is a small chainsaw on a pole. Most reach 8 to 12 ft, and some telescope. Working height is not the same as pole length: it is pole length plus 2 to 3 ft of your own reach, so an 8-ft pole gives about 10 to 11 ft of working height. Most powered pole saws top out around 10 to 12 ft of working height because control degrades beyond that.

The design difference between power sources matters here. Gas pole saws put the engine at your hands and drive a shaft to the head; electric pole saws put the motor at the saw head, with only a trigger at your hands. That changes balance and maintenance. Gas pole saws are typically 20 to 40 cc and cut limbs of 10 in and up, corded models run 6 to 10 amps and cut 2 to 5 in, and battery models run 40 to 80V and cut 3 to 8 in. Never use one near power lines.

Attachment-capable multi-tools

A powerhead that takes a pole-saw attachment plus a hedge trimmer, string trimmer or blower is a form factor worth knowing about if you already own or plan to own several outdoor tools on one system.

One rule covers most of this axis: if you need to cut above shoulder height, use a pole saw rather than reaching with a standard saw.

Duty class is how hard and how often a saw is built to run, and in the US it has a legal line drawn through it. Under CPSC and ANSI B175.1, gas saws under 3.8 cu in (62.3 cc) are classed as consumer or homeowner saws, and larger ones as professional. A similar split exists for electric saws.

That line has a visible consequence. Consumer saws are required to ship with a low-kickback safety chain, and chain labels follow a convention: a blue label means the chain meets the low-kickback standard and can go on any saw, while a yellow label means professional use only.

The four practical tiers look like this:

• Homeowner and consumer saws cover occasional limbing, pruning, light firewood and storm cleanup.
• Farm and ranch or landowner saws take routine storm debris and regular firewood, with more frequent use and bigger wood.
• Professional saws are built for logging, land clearing and tree service, with long bars and high hours.
• Arborist and tree care saws include the top-handle models used aloft.

One counterintuitive point is worth taking seriously: a saw that is too big for you is a safety risk, because tired arms lose control. A novice is usually better served by a smaller, lighter saw than by the biggest one they can afford.

Bar length is the number buyers fixate on and the one most often chosen for the wrong reason. The bands are simple enough: up to 14 in for light and occasional limbing, small logs and felling small trees; 14 to 20 in for frequent log cutting, small to medium felling and firewood; over 20 in is professional territory.

First, the bar should be about 2 in longer than the diameter you cut, so a 10-in log wants a 12-in bar. Second, the maximum cut diameter is slightly less than the bar length: a 6-in pruning saw takes about a 4-in branch, and a 10-in saw takes about an 8-in tree.

You can cut a bigger log with a smaller bar using proper technique, but it is slower and less safe. A bar much longer than your work invites tip contact with the ground or another limb, and the tip is the kickback zone.

Weight deserves a reality check too. Quoted weights are powerhead only. The bar and chain add 1.5 to 2 lb, and a pint of fuel adds about 1 lb, so a light saw gets heavier fast once it is ready to cut.

For firewood, match the bar to the rounds you will actually cut, not to the biggest tree on the property.

Which safety features you get depends on the type you choose, and a few of them are worth checking before anything else. The chain brake matters most, and an inertia-triggered brake is the safest kind; a manual brake doubles as the front hand guard. Consumer saws ship with a low-kickback chain as required. Beyond those, look for a chain catcher, a throttle trigger lockout, a wraparound front handle, an anti-vibration handle and, where required locally, a spark arrester. One-hand pruning saws add a tip guard, and electric saws carry a built-in circuit breaker.

Setup facts that keep a saw running and safe:

• Chain tension should leave about a 1/32 in gap at the bar center when the chain is cold, and about 1/8 in when it is warm.
• Bar oil is SAE 30 in summer and SAE 10 in winter, or a dedicated bar-and-chain oil. Never use reclaimed crankcase oil, which corrodes the oil pump.

Personal protective equipment belongs to the job, not to a shopping list: chainsaw chaps, a forestry helmet with a face shield, safety glasses worn under the shield, hearing protection, cut-resistant gloves and boots. It can cost more than the saw and costs far less than an emergency room visit.

The hard rules are short. Never cut above shoulder height. Never saw on a ladder. Never use the bar tip. Never run a full-size saw one-handed. Never run a gas saw indoors. The scale of the risk is worth knowing: chainsaws send roughly 36,000 people a year to US emergency rooms, about 70% of those injuries involve the hands and lower extremities, and the noise routinely exceeds 100 dB.

1. What are you cutting? Branches only points to a one-hand pruning saw. Firewood and felling point to a rear-handle standard saw. High limbs point to a pole saw.
2. How big is the wood? Apply the 2-inch rule and the maximum-cut rule to pick the bar.
3. How far from an outlet are you, and can you charge? An outdoor outlet nearby with modest use favors corded. A place to charge favors battery. No charging and all-day running favors gas.
4. How often will you use it? Occasional work fits the homeowner class, regular firewood and storm work the farm and ranch class, daily work the professional class.
5. Are you working aloft? Only then is a top-handle saw the right tool, and only for trained users.

For the typical reader, that comes out as a battery rear-handle saw with a 14 to 16 in bar for general work, a one-hand pruning saw with a 6 to 8 in bar for branch work, and a pole saw for anything above shoulder height. Gas covers all-day firewood, bars over 20 in and sites with no way to charge. Corded covers the tightest setup with an outlet within cord reach.

What any given saw costs depends on its power source, bar length and duty class, and on whether batteries and a charger come in the box. The product cards on this page show current prices.