# How to Choose a Chainsaw: A Practical Buyer's Guide

A beginner's route through the decisions that actually determine which chainsaw you need: the job, the power source, the bar length, and the weight you can still hold up after two hours.

Source: https://chainsawdata.net/en/guides/how-to-choose-a-chainsaw/
Site: ChainsawData (chainsawdata.net) — open technical specification database
Last updated: 2026-08-24
License: free to quote with attribution to chainsawdata.net

---

## Start with the job, not the saw

Most disappointing chainsaw purchases begin the same way: someone picks a model, then works out what to do with it. Reverse the order. Four jobs cover almost every buyer, and each points at a different machine.

**Occasional firewood.** A few loads a season, logs already on the ground, cutting within sight of the house. You need enough power to bury a 40-45 cm bar in seasoned hardwood without the chain bogging down, and very little beyond that. The [Stihl MS 251](/en/stihl/stihl-ms-251/) sits squarely in this bracket at 45.9 cc, 2.2 kW and 4.8 kg, and the intended use recorded for it in our database describes a saw "for homeowners and light duty work".

**Property maintenance.** Storm cleanup, limbing, cutting back overgrowth, the occasional small tree. Here weight matters more than raw output, because a lot of the cutting happens at or above waist height and the saw is picked up and put down all day. The [Echo CS-310](/en/echo/echo-cs-310/) at 30.5 cc and 3.99 kg, or the [Makita EA3200SRBB](/en/makita/makita-ea3200srbb/) at 32 cc, 1.3 kW and 4.08 kg — filed in our data under the intended use "occasional user" — are the shape of saw this job wants.

**Felling and land clearing.** Standing timber, larger diameters, hours of work at a stretch. Now displacement earns its keep. The [Husqvarna 455 Rancher](/en/husqvarna/husqvarna-455-rancher/) runs 55.5 cc and 2.61 kW with a 50 cm recommended bar and a 61 cm maximum; the [Echo CS-590 Timber Wolf](/en/echo/echo-cs-590-timber-wolf/) offers 59.8 cc against a 60.96 cm maximum bar.

**Tree work off the ground.** A separate category, not a bigger or smaller version of the others. Top-handle saws are built to be operated one-handed by a climber on rope: the [Echo CS-2511T](/en/echo/echo-cs-2511t/) is 25 cc and 2.36 kg, the [Husqvarna T540XP Mark III](/en/husqvarna/husqvarna-t540xp-mark-iii/) 39.1 cc and 3.81 kg. Both are recorded in our data as professional arborist tools. If you are not a trained climber, this is not your category.

## The three power sources

| | Petrol (2-stroke) | Battery | Mains electric |
|---|---|---|---|
| Typical use recorded in our data | felling, firewood, farm and ranch | pruning, limbing, yard cleanup, professional arborist work | light cutting near a power point |
| Runtime limit | fuel in the tank | charge in the pack | cable length |
| Weight example | 4.8 kg ([Stihl MS 251](/en/stihl/stihl-ms-251/)) | 3.1 kg ([Husqvarna 225i](/en/husqvarna/husqvarna-225i/)) | 5.5 kg ([Makita UC3551A](/en/makita/makita-uc3551a/)) |
| Sound pressure example | 107 dB(A) ([Husqvarna 455 Rancher](/en/husqvarna/husqvarna-455-rancher/)) | 89 dB(A) ([Husqvarna 225i](/en/husqvarna/husqvarna-225i/)) | not recorded in our data |
| Maintenance | fuel mixing, air filter, spark plug, carburettor | chain and bar only | chain and bar only |

Petrol still wins on sustained output per kilogram, and it is the only source that does not care how far you are from a charger. The cost is noise, vibration, fuel mixing at 50:1 and a carburettor that will eventually need attention.

Battery has moved well past the toy stage. The [Husqvarna 540i XP](/en/husqvarna/husqvarna-540i-xp-tool-only/) is recorded at 1.79 kW and 2.9 kg with a chain speed of 24.1 m/s and a sound pressure level of 95 dB(A) — a genuinely professional set of numbers, and quieter than any petrol saw in our database. At the domestic end, the [EGO CS1200](/en/ego/ego-cs1200/) pairs a 30.48 cm bar with a 20 m/s chain speed at 3.81 kg, listed for "light-duty brush removal, limb work". Between them sit tools like the [DeWalt DCCS674B](/en/dewalt/dewalt-dccs674b/) — 1.79 kW, 35.56 cm bar, 23 m/s — and the [Makita XCU03PT](/en/makita/makita-xcu03pt/), classified "Professional/Commercial".

Mains electric is a narrow category and our database holds few of them. It makes sense only if all your cutting happens within a cable's reach of a socket.

If this is the decision you are stuck on, the [gas vs battery vs electric comparison](/en/guides/gas-vs-battery-vs-electric-chainsaw/) goes through it in more detail.

## Bar length follows from the job

The rule that saves beginners money: the bar should be roughly 5 cm longer than the widest wood you cut regularly. A longer bar is not a free upgrade: it adds weight at the far end of the saw, needs more power to drive the extra chain, and pushes more of the kickback zone out of sight.

Manufacturers publish two figures and our database stores both. The *recommended* bar length is what the saw is set up to pull well; the *maximum* is what will physically fit. The [Husqvarna 435](/en/husqvarna/husqvarna-435/) lists 40 cm recommended against 45.72 cm maximum, and the [Echo CS-310](/en/echo/echo-cs-310/) 35.56 cm against 40.64 cm. Fitting the maximum on a small engine gives you a saw that is slower in every cut, not a bigger saw.

At the other end, the [Husqvarna 564XP Fuel Injected](/en/husqvarna/husqvarna-564xp-fuel-injected/) records a 38.1 cm recommended bar and a 71.1 cm maximum — it can carry a very long bar precisely because it has 4.03 kW behind it. The full reasoning is in the [bar length guide](/en/guides/chainsaw-bar-length-guide/).

## Displacement and weight pull against each other

Displacement buys you power, and power comes with mass. Compare three petrol saws from our database:

| Model | Displacement | Power | Weight | Recommended bar |
|---|---|---|---|---|
| [Husqvarna 435](/en/husqvarna/husqvarna-435/) | 40.9 cc | 1.64 kW | 4.44 kg | 40 cm |
| [Stihl MS 291](/en/stihl/stihl-ms-291/) | 55.7 cc | 2.8 kW | 5.6 kg | 45.7 cm |
| [Stihl MS 311](/en/stihl/stihl-ms-311/) | 59.0 cc | 3.1 kW | 6.26 kg | 45.7 cm |

Going from the 435 to the MS 311 nearly doubles the power and adds 1.8 kg. That is the trade in its simplest form, and whether it is worth it depends entirely on how long you hold the saw up: 1.8 kg is nothing for two cuts and a great deal for two hours of limbing.

Weight figures here are as the manufacturer publishes them, normally the powerhead without bar and chain. Cordless models are the awkward case: makers are inconsistent about whether the pack is counted, so compare cordless weights across brands with caution.

## The safety features worth insisting on

Four things are not optional, whatever the budget: an **inertia chain brake** that stops the chain on kickback, a **chain catcher** under the powerhead, a **throttle interlock** so the trigger cannot be pulled accidentally, and a **low-kickback bar and chain combination** unless you have specific reason to run something more aggressive.

Beyond that, two published numbers predict how tiring a saw will be over a full day. **Vibration** at the handles is measured in m/s²: the [Husqvarna 435](/en/husqvarna/husqvarna-435/) records 3.1 front and 3.8 rear, while the [Husqvarna 455 Rancher](/en/husqvarna/husqvarna-455-rancher/) records 3.8 and 6.9 — a real difference over a morning's work. **Sound pressure** is measured in dB(A): 102 for the 435, 107 for the 455 Rancher, 89 for the battery-powered [Husqvarna 225i](/en/husqvarna/husqvarna-225i/). All three call for hearing protection; the gap between them is the difference between annoying and genuinely hostile.

None of this replaces chaps, boots, gloves, a helmet and eye protection.

## A short decision checklist

1. Name the job in one sentence, and the largest diameter you cut regularly.
2. Pick the power source from that sentence — cutting away from power and for hours means petrol; everything else is now open to battery.
3. Set the bar length at roughly your largest diameter plus 5 cm, then check it is at or below the manufacturer's recommended figure, not just the maximum.
4. Pick the smallest displacement that comfortably drives that bar. Extra cc you do not use is extra kilograms you carry.
5. Confirm the chain brake, chain catcher and throttle interlock, and read the vibration and dB(A) figures before you commit.
6. Sanity-check the intended use the manufacturer publishes — our model pages record it verbatim.

## Where to go next

- [Bar length guide](/en/guides/chainsaw-bar-length-guide/) — sizing the bar properly, and why the maximum is a trap.
- [Gas vs battery vs electric](/en/guides/gas-vs-battery-vs-electric-chainsaw/) — the power source decision in full.
- [Best chainsaw for firewood](/en/guides/best-chainsaw-for-firewood/) — if firewood is the whole reason you are buying.
- [Professional vs homeowner chainsaws](/en/guides/professional-vs-homeowner-chainsaws/) — what the price step actually buys.

You can also work straight from the numbers: browse [all models](/en/chainsaws/) or put two candidates side by side in the [comparison tool](/en/compare/).