What are the circular saws with the highest cutting speed?

A professional-grade 7.25 in worm-drive circular saw with magnesium construction, high torque for fast ripping and metal cuts, and a left-side blade. It's built for heavy construction tasks and long cutting sessions where power and durability matter. The saw is relatively heavy but offers excellent sight lines and precise depth/bevel adjustments.

Cordless 18V PROFACTOR circular saw with BITURBO Brushless motor delivering up to 5,000 RPM, a 7.25 in blade, 2.5 in max cutting depth, and a 0-50° bevel range. It includes connectivity features, an electronic brake, track compatibility, and is sold as a kit with CORE18V battery on some retailer listings, making it suitable for pro carpenters who need corded-equivalent performance from a battery tool.

Heavy-duty 15 Amp corded worm-drive circular saw with a 10.25 in carbide-tipped blade, high 5,300 RPM no-load speed, and deep cutting capacity (3.875 in at 90°). Built with magnesium guards and foot for reduced weight and durability, it's aimed at professional framers and heavy timber work. Ships assembled in the USA and includes a carbide blade.

Cordless 20V Max circular saw with a 6-1/2 in carbide-tipped blade and a 5,150 RPM motor. Lightweight magnesium shoe, 0-50 degree bevel capacity, and keyless blade change make it suitable for fast, precise cuts on job sites or DIY projects.

The DCS391B is a 20V MAX cordless circular saw with a 6-1/2 in carbide-tipped blade and a 5150 RPM brushed motor. It features a lightweight magnesium shoe, 0-50° bevel capacity, and an ergonomic over-molded grip, suitable for jobsite framing and general carpentry tasks.

Cordless rear-handle worm-drive style circular saw powered by DeWalt FLEXVOLT 60V batteries with a 7-1/4 in blade, brushless motor, magnesium shoe, electronic brake and integrated dust blower. It delivers 5800 rpm and up to 2-7/16 in cutting depth at 90 deg, targeting professional framers and contractors needing cordless power and durability.

Cordless rear-handle Makita GSR01M1 uses the 40V XGT brushless motor to deliver up to 6,400 RPM and a corded-equivalent 15 AMP performance, with a 7-1/4 in blade and 2-9/16 in maximum cutting depth. It includes a 4.0 Ah battery, charger, blade, and bag, and features automatic torque drive, magnesium components, and jobsite protection for heavy-duty framing and roofing work.

The Milwaukee 6470-21 is a corded 15 Amp, 10-1/4 in circular saw with a 5,200 RPM motor, electric brake, and aircraft aluminum shoe for durable, high-performance cutting. It offers a 3.813 in depth of cut at 90° and up to 60° bevel capacity, suitable for heavy framing and roof rafter work.

Cordless M18 6-1/2in circular saw delivers a 3,500 RPM motor in a lightweight package with magnesium guards and an aircraft-aluminum shoe for accuracy. It includes an electronic brake, ergonomic soft-grip handle, and is sold as a bare tool compatible with M18 batteries.

Powerful M18 FUEL rear-handle circular saw with a POWERSTATE brushless motor delivering 6,000 RPM, 2.625 in cut capacity at 90°, a magnesium shoe/guards, rotational dust port and electric brake; sold as a bare tool or in kits and designed for professional carpenters and framers who need cordless performance comparable to corded worm-drive saws. It pairs with M18 REDLITHIUM batteries for long runtime and up to ~700 cuts per charge with the HD12.0 battery.