How to Choose a Chainsaw: Bar Length, Gas vs Electric & Safety Gear

Who This Guide Is For

This guide is for you if:

• You're equipping an outdoor space and want to know what's actually worth buying
• You want honest trade-off analysis before spending $200+ on outdoor equipment
• You're comparing options and need guidance, not just sales copy

Skip this guide if:

• You already know what you need — see our yard comparison pages
• You're a landscaping professional — this guide is for homeowners

Start Here: Match the Saw to the Job

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CHAINSAW BAR LENGTH - What size bar is right for your chainsaw? - How

The most common chainsaw mistake is buying too much saw — a 20-inch gas saw for occasional storm cleanup that becomes 50 lbs of maintained anxiety in the garage. The second most common mistake is buying too little — a battery pruning saw for firewood processing that runs out of charge halfway through a cord of oak.

Before you read any further, answer these questions:

1. What's the largest diameter wood you'll regularly cut?
2. How often will you use the saw? (Twice a year vs twice a month changes everything)
3. Do you have somewhere to store gas equipment and are you willing to mix fuel and do seasonal maintenance?
4. Will you be cutting far from power outlets or a charging station?

Watch Buckin' Billy Ray's YouTube channel for honest working assessments of both battery and gas saws — he's a professional logger who tests consumer tools without the marketing filter. This Old House has excellent chainsaw safety videos that should be mandatory watching before your first cut.

How We Chose

We researched dozens of options, analyzed thousands of verified reviews on Amazon and Reddit, and cross-referenced expert recommendations from Ryan Knorr Lawn Care, Wirecutter outdoor testing, and verified homeowner reviews. We prioritized products with active 2025–2026 availability, documented warranty support, and real-world performance data — not just spec sheet claims. Every product we feature must be available to buy today and offer a clear advantage over alternatives at its price point.

Bar Length Guide: The Selector Nobody Explains Clearly

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How To Be A Chainsaw Hero

The bar length determines the maximum diameter log you can cut in a single pass. The rule: your bar should be 2 inches longer than the widest cut you'll regularly make. Cutting a 12-inch log with a 12-inch bar is technically possible but requires rocking the saw — add 2 inches of margin for safe, efficient cuts.

Important: A longer bar on an underpowered engine is worse than a shorter bar on an appropriate engine. The saw must have enough power to pull the chain through the full bar length under load. Matching engine cc (gas) or voltage (battery) to bar length is as important as the bar length itself.

Gas vs Battery vs Electric: The Honest Breakdown by Use Case

Battery Chainsaws: When to Choose Them

Modern 40V-80V battery chainsaws have crossed the performance threshold for all homeowner-scale work. The EGO 56V and Greenworks 80V saws are legitimately comparable to 35-40cc gas saws for the tasks most homeowners encounter. For anything up to 14" diameter and sessions under 2 hours, battery is the practical choice.

Choose battery when:

• You use the saw less than once a week and don't want to deal with stale fuel issues
• You already own same-brand batteries (platform investment pays off)
• You work near structures where fuel storage is impractical
• Noise is a concern (battery saws run significantly quieter — 95-98 dB vs 100-105 dB for gas)
• You mainly do limbing and storm cleanup in suburban yards

Battery limitations to understand:

• Runtime: 45-90 minutes per charge depending on work load. Multiple batteries needed for extended sessions.
• Cold weather performance: lithium batteries lose capacity below 40°F. Keep batteries warm before winter use.
• Battery degradation: replace packs every 3-5 years ($40-$80 per battery)
• Maximum power ceiling: the best 56-80V battery saws match gas saws up to about 45cc — above that, gas still wins

Gas Chainsaws: When They're Still the Right Choice

Gas chainsaws have no runtime limits, no temperature restrictions, and at 50cc+ they outperform any current battery equivalent for sustained heavy cutting. For professional use, farm and acreage work, or regular felling of trees over 12" diameter — gas is still the tool.

Choose gas when:

• You process multiple cords of firewood per year
• You regularly fell trees over 12" diameter
• You work far from power — off-grid, remote property, logging
• You need sustained cutting power for hours at a time
• You're in a professional or semi-professional context

Gas chainsaw maintenance reality: Gas saws need fuel mixed correctly (40:1 or 50:1 — check your manual), carburetor adjustment seasonally, air filter cleaning, spark plug replacement annually, chain sharpening every 5-8 hours of cutting, and proper winterization if stored for months. This isn't difficult, but it's time investment that battery saws eliminate.

Corded Electric: The Forgotten Option

Corded electric chainsaws (Greenworks 14" corded, WEN models at $50-$100) are underrated for very light, very occasional use close to the house. No battery management, consistent power, very quiet. The 100-foot extension cord limit makes them useless for clearing the back 40 but perfectly adequate for pruning the apple tree and cutting up fallen branches near the house. Not discussed further because battery has effectively replaced them for most buyers.

Chain Types: The Spec That Changes How the Saw Feels

Full Chisel

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How to Safely Operate Your Electric Chainsaw

Square-cornered teeth that cut aggressively and fast. Maximum cutting speed in clean, hard wood. Dulls faster when hitting dirt, sand, or embedded debris. Best for professional use in clean logs — the chain used by loggers and experienced operators. Not forgiving of dirty or frozen wood.