DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only vs SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm
Updated July 2026 — DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only wins on cutting capacity and power, SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm wins on price and weight.
The DEWALT ATOMIC offers better portability and value, while the SKILSAW excels in power and cutting capacity.
Why DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only is better
Price
DEWALT is $22.28 cheaper
Portability
DEWALT is cordless and lightweight
User-Friendly
DEWALT has more convenient features
Why SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm is better
Power
SKILSAW has a 15-Amp motor
Cutting Depth
SKILSAW has a larger 7-1/4 inch blade
Durability
SKILSAW is built with aluminum construction
Overall score
Specifications
| Spec | DEWALT ATOMIC 20V MAX* Circular Saw, 4-1/2-Inch, Tool Only | SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm |
|---|---|---|
| Motor Type | Brushless | Dual-Field |
| Auxiliary Handle | Yes | No |
| Dust Port | Yes | No |
| Electronic Brake | Yes | No |
| Depth Adjustment | Manual | Cut Ready |
Dimension comparison
Overview of the Products
In the realm of circular saws, two noteworthy contenders are the DEWALT ATOMIC 20V MAX* Circular Saw and the SKILSAW SPT77W-01 Aluminum Worm Drive Circular Saw. The DEWALT is priced at $159.00, while the SKILSAW retails for $181.28, making the DEWALT about 17% cheaper. This price difference is significant for users looking for quality on a budget. Both products cater to distinct user needs, with the DEWALT emphasizing portability and the SKILSAW focusing on power and performance.
Design and Build Quality
When it comes to design, the DEWALT ATOMIC is compact and lightweight, making it ideal for users who need a saw that is easy to handle. Its brushless motor contributes to its efficiency, allowing users to tackle various applications without the bulk. In contrast, the SKILSAW features a robust aluminum construction that lends it durability. Weighing 14.2 lbs without the blade, cord, and wrench, it is designed to withstand tough job site conditions while reducing user fatigue. The DEWALT's design is more suited for mobility, while the SKILSAW’s design prioritizes strength.
Power and Performance
Power is a critical aspect of any circular saw, and here the SKILSAW shines with a 15-Amp Dual-Field motor designed specifically for saw applications. This motor not only enhances cutting performance but also extends the tool's life through improved cooling. The DEWALT, powered by a brushless motor, allows for impressive cutting capabilities, enabling users to cut up to 369 linear feet of 3/4-inch OSB using a DCB205 battery. While the DEWALT is potent for its size, the SKILSAW offers a more powerful solution for heavier-duty tasks.
Cutting Capacity
In terms of cutting capacity, the DEWALT ATOMIC is equipped with a 4-1/2 inch blade, making it versatile for smaller cuts and intricate work. Its bevel gear design enables 2x material cuts at 90 degrees and 1x material cuts at 45 degrees. Conversely, the SKILSAW comes with a larger 7-1/4 inch blade, providing a greater cutting depth and the ability to perform more extensive cuts efficiently. The 51-degree bevel on the SKILSAW allows for a wider variety of angled cuts, making it more suitable for complex projects where precision is crucial.
Features and Usability
Both saws boast unique features that enhance usability. The DEWALT includes a removable auxiliary handle for added control, a hang hook for convenience, and an on-board dust port for dust management during cuts. It also has an electronic blade brake for safety, which stops the blade quickly after use. Meanwhile, the SKILSAW offers a Cut Ready depth-of-cut system for quick adjustments and an integrated saw hook for safe placement on rafters. While both saws provide excellent features, the DEWALT emphasizes user-friendly aspects, whereas the SKILSAW focuses on professional-grade functionalities.
Portability and Convenience
Portability is a key consideration for many users, and the DEWALT ATOMIC excels in this area. Being a cordless model, it allows for greater freedom of movement without being tethered to an outlet, making it ideal for outdoor projects or jobs in remote locations. The SKILSAW, being corded, may limit mobility but compensates for this with consistent power delivery. For users who prioritize convenience and the ability to work in various settings, the DEWALT is the preferable choice, while the SKILSAW is better suited for stationary use that demands unwavering power.
Price and Value
The DEWALT ATOMIC Circular Saw is priced at $159.00, which is more economical compared to the SKILSAW’s price of $181.28. This roughly $22.28 difference can make a significant impact, especially for budget-conscious buyers. Despite the price difference, both saws provide value in their own right, catering to different user needs and preferences. The DEWALT offers great value for those needing a portable, versatile tool, while the SKILSAW justifies its higher price with superior power and cutting depth.
Which should you buy?
Choosing between the DEWALT ATOMIC 20V MAX* Circular Saw and the SKILSAW SPT77W-01 Aluminum Worm Drive Circular Saw ultimately depends on your specific needs. If you require a lightweight, portable saw for various applications, the DEWALT is the better option, especially at its lower price point. However, for professionals or serious DIYers who need a more powerful tool for extensive cuts and precise angles, the SKILSAW is worth the investment. Each saw excels in different areas, so the final decision should align with your intended use and budget constraints.

