10 Best 40 Inch Smart Tvs 2026 in the United States

The LG 42-Inch OLED evo AI 4K C5 Series Smart TV offers an impressive viewing experience thanks to its OLED display, which delivers perfect blacks and vibrant colors by controlling each pixel individually. With a 4K resolution and support for Dolby Vision and HDR10, the picture quality is sharp and bright, making movies and shows look stunning. The TV’s 120Hz refresh rate ensures smooth motion, which is great for fast scenes in sports or gaming, although some gamers might wish for a full 144Hz. It also features low response times and advanced gaming tech like NVIDIA G-Sync and AMD FreeSync, making it a strong choice for gaming enthusiasts.

Sound is enhanced by Dolby Atmos and LG's Wow Orchestra technology, providing immersive audio without needing extra speakers. The built-in Alpha 9 AI processor boosts picture and sound quality, adapting to what you watch, which is helpful if you're not keen on manual settings. Its smart platform, webOS, is user-friendly and offers many streaming apps plus handy voice assistants like Alexa built-in. Connectivity options are solid with multiple HDMI 2.1 ports, USB, Bluetooth, and Wi-Fi, supporting various devices easily.

The design is sleek and modern, fitting well in a living room, and the 42-inch size is good for medium-sized spaces, although slightly bigger sizes might suit larger rooms better. A minor consideration is that the TV is priced towards the upper mid-range, so it might be a bit expensive for budget shoppers. This LG model is well suited for someone wanting excellent picture and sound quality, smart features, and a good gaming experience in a compact 42-inch OLED screen.

The INSIGNIA 43" Class F50 Series is a solid choice if you're looking for a smart TV around 40 inches with 4K picture quality. Its 4K Ultra HD resolution combined with HDR10 support helps deliver clear, vibrant images with good contrast, so movies and shows look sharp and colorful. The refresh rate is standard at 60 Hz, which is fine for everyday TV watching but not ideal if you want super-smooth motion for fast-paced sports or gaming.

Powered by the Fire TV platform, this TV offers easy access to popular apps like Netflix, Prime Video, and Disney+, plus a large library of free ad-supported content. The Alexa Voice Remote makes navigation simple, and it can also act as a smart home hub to control compatible devices. Connectivity is versatile, featuring 3 HDMI ports, USB, Wi-Fi, Bluetooth, and even Apple AirPlay support, covering most connection needs.

Sound quality benefits from DTS Virtual-X technology, providing a decent immersive experience without needing extra speakers, and HDMI eARC support means you can connect high-quality audio devices if you want better sound. The viewing angle is typical for LED TVs, so picture quality is best when viewed straight on. The design is straightforward with a slim profile and wall-mount compatibility, making it easy to fit in various spaces. At around 25 pounds, it’s manageable to set up.

The Roku 40-Inch Select Series TV offers a bright and clear 1080p Full HD display, which is a good fit for bedrooms, kitchens, or any space where a larger 4K screen isn't necessary. It runs on the Roku OS, known for being simple and fast, with quick app launches and access to a huge selection of streaming channels, including free content. The 60Hz refresh rate is standard for this size and price, making it suitable for everyday TV watching and casual gaming, though it might not be ideal if you want super-smooth motion for fast-paced sports or action movies.

This model doesn't support HDR, so picture contrast and color depth won’t be as rich as on higher-end models. Connectivity options are solid, with 3 HDMI ports, USB inputs, Wi-Fi, Bluetooth, and even Apple AirPlay support, making it easy to connect various devices and use voice assistants like Alexa or Google Assistant. Sound quality is enhanced by Dolby Audio and clear speech focus, plus a 2.1 channel speaker system that delivers louder sound than many entry-level TVs. The included voice remote simplifies navigation, and the Bluetooth headphone mode is handy for private listening without disturbing others.

The TV has a sleek, glossy finish with a lightweight build and supports both wall and table mounting. For those who prioritize top-tier picture quality or HDR experience, this TV may feel lacking. It is well-suited for users seeking an affordable, easy-to-use smart TV with reliable streaming performance and decent sound in a compact 40-inch size.