M18 Cordless Lithium-Ion 6-1/2" Circular Saw
- Saw
- 7.2 inches
- 1800 watts
- Battery
- More reviewed than 82%
An 18V cordless 6-1/2 inch circular saw on the M18 platform, useful for framing and sheet-good cuts wherever a cord isn't practical.
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How it ranks among the 265 saws we track
4.6★ across 1,600 Amazon ratings, Bayesian-smoothed toward the category average.
1,600 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
300+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 265 saws we track - how the scorecard works · full saws data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
An 18 volt cordless circular saw built around the M18 battery platform, model 2630-20. It's sized for a 6-1/2 inch blade with a 3500 rpm no-load speed and weighs 7.28 pounds, aimed at framing and general carpentry cuts without a cord.
The 18V battery setup trades outlet dependence for portability, which matters most when you're cutting on a ladder or across a site with no power run. At 7.28 pounds it stays light enough to control one-handed for repeated cuts. The listing doesn't state cut depth or bevel range, so check those details before buying if you need to match a specific project spec.
- 18V lithium-ion battery power
- 6-1/2 inch blade capacity
- 3500 RPM no-load speed
- 7.28 pound tool weight
Who it's for
Suits DIYers and tradespeople who want a cordless 6-1/2 inch circular saw for framing, sheet goods, and general carpentry where an outlet isn't handy. Less suited to anyone needing sustained high-torque ripping, where a corded saw typically holds power longer.
Strengths and trade-offs
Drawn from this product's published specifications.
- Cordless freedom from an 18V battery
- Light at 7.28 pounds for one-handed cuts
- 3500 rpm keeps blade speed high
- Cut depth and bevel range not listed
- Battery and charger inclusion not specified
- Corded saws typically hold more sustained power
Performance notes
A 3500 rpm no-load speed keeps the blade moving fast enough for clean cuts through dimensional lumber and sheet goods. Power comes from an 18V lithium-ion pack, so actual runtime and torque depend on which battery you pair it with, since none is specified in this listing. At 7.28 pounds, it's light enough to steer through repeated cuts without much arm fatigue.
Specifications
| Brand | M18 |
|---|---|
| Model | M18 |
| Dimensions & fit | |
| Item Weight | 7.28 pounds |
| Dimensions | 12.2 × 8.5 × 8 inches |
| Capacity & performance | |
| Capacity | 7.2 inches |
| Speed | 3500 rpm |
| Power & efficiency | |
| Motor Power | 1800 watts |
| Power Source | Battery |
| Voltage | 18 volts |
| Construction & materials | |
| Material | High Speed Steel |
How it compares
This product against the closest alternatives we track in saws.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| M18 Cordless Lithium-Ion 6-1/2" Circular SawThis product | 4.6 / 5 | 1,600 | 4.3 / 5 |
| DEWALT DCS334B SawDeWalt | 4.8 / 5 | 9,477 | 4.7 / 5 |
| SKIL 5280-01 SawSkil | 4.7 / 5 | 14,300 | 4.6 / 5 |
| Milwaukee 2719-20 SawMILWAUKEE | 4.8 / 5 | 6,485 | 4.5 / 5 |
| BLACK+DECKER BDEJS600C SawBLACK+DECKER | 4.7 / 5 | 11,123 | 4.5 / 5 |
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Questions about the M18 M18
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size blade does the model 2630-20 use?
A 6-1/2 inch blade, per the listing title.
Is this saw corded or cordless?
Cordless, running on an 18 volt lithium-ion battery.
How much does it weigh?
7.28 pounds, per the manufacturer spec.