5 Best Under-Desk Treadmills of 2026, Expert-Tested and Reviewed

An under-desk treadmill is a lightweight and easy-to-store option if you’re looking to walk some steps at a standing desk or a tall table. If you don’t have a standing desk, consider an under-desk elliptical for use at a standard seated desk. But know the differences.

Some of the models we tested are sold by small companies that don’t have a history of treadmill manufacturing. These could be products purchased in bulk and sold under different brand names, Bogdan says. It’s also possible for companies to sell the same products under different names after customers report issues with the original product. One machine we purchased came with a different brand name printed on it than the one in the product listing, though the machine itself was visually identical.

The lack of known brands could also indicate a higher-than-normal likelihood of customer service issues, because some of these fly-by-night brands may be difficult to reach or less willing to offer repairs than household-name brands.

Each of the under-desk treadmills we tested underwent a hands-on observational session focused on how the machine actually moves and fits a user at a real desk.

To evaluate ergonomics, our testers measure the machines to ensure their belts are wide and long enough to accommodate a range of users. These machines are designed to be compact, but that may make them a poor fit for many consumers. (The weight capacity for most of these is far lower than the capacity of full-sized treadmills, for example.) Many of these models have narrow foot rails barely wide enough for a person to stand on and often have narrow belts. For typical treadmills, a 16-inch belt is narrow enough to receive a very low ergonomic score. All under-desk treadmills we tested have belts between 15 and 19.75 inches.

To assess construction, we use one of our treadmill-durability robots–a large metal spinning drum with “legs” and “feet” that hit the belt like runners’ shoes–and run it for 12 hours on each machine, cycling 1 hour on and 30 minutes off. For full-sized treadmills, we run this test for 25 hours to simulate half a year of use; we rarely see problems. But the belt on one of the under-desk treadmills tore during our 12-hour test. We also examine the treadmill’s deck height and width, the creakiness of the foot rails when two testers stand on them, and whether adjusting the speed causes the belt to jerk, which could cause a walker to stumble.

“Most of these don’t appear to be as sturdy as conventional treadmills,” Bogdan says. That makes a warranty important. Most of these products come with a warranty for one year or less, often with exclusions. Amazon reviews indicate customer service is often unhelpful. One LifeSpan under-desk treadmill we tested arrived damaged. Though we resolved the situation, it required sending photos and video to make our case.

The main strength of most of these products is ease of use. They’re small, making them easy to move and store. Setup is simple for these under-desk treadmills, and most are controlled by a small remote (though you should be cautious about losing it; it may be the only way to control the machine).

Only a handful of these machines score highly on our exercise-range evaluation, though this isn’t a surprise, Bogdan says, because they are intended to be used for walking only. As a result, low marks in this category do not significantly affect the Overall Score. Products receive a bonus for having lower minimum speeds, though not all products can meet the advertised minimum speed. For example, one product claims a minimum speed of 0.5 mph, but we measured it at 1.1 mph. Another model increased in speed with a human on the machine.

Our safety evaluation raised major red flags about many of these devices. While some have safety keys, pulling them on most machines caused the treadmill to slam to a sudden stop, increasing the risk of a fall. Many of these run without a load, posing another safety risk: We want the treadmill to run only when it’s in use. Finally, a few of the machines in our tests include handrails, but they’re too short for many users and often fairly flimsy. This could create a false sense of security if someone grabs on to them, for example, while falling.

This question of what’s better, an under-desk treadmill or an under-desk elliptical, largely comes down to personal preference.

The under-desk treadmills we tested cost $150 to $1,400, while the under-desk ellipticals cost $57 to $250, making treadmills the costlier option.

Under-desk treadmills require a standing desk or a tall table, while under-desk ellipticals can be used at a standard seated desk.

While using an under-desk treadmill, you’re continuously walking. It’s more difficult to perform tasks that require stability or a steady hand, and that movement makes you more easily spotted by coworkers on a video call. They’re noisy, too. You may need to slow down or pause your treadmill for more important tasks or situations. While using an under-desk elliptical, your upper body can remain still, making it easier to complete tasks that require stability. Your use of an under-desk elliptical can more easily go unnoticed when you hop on a video call, too, because you aren’t moving around. Plus, they’re much quieter relative to under-desk treadmills.

Under-desk treadmills and under-desk ellipticals expend a similar amount of energy (when walking on the treadmill at 1 to 2 mph). However, Christopher McMullen, MD, an associate professor of clinical practice at the University of Washington School of Medicine, says that using a treadmill "where there is the ability to stand and walk, rather than sit, is likely to be more beneficial." Standing and walking will activate more muscle groups and may provide beneficial vascular effects from being upright, he says.

Under-desk treadmills have a larger footprint than under-desk ellipticals. The under-desk treadmills we’ve tested can were as long as 60 inches and as wide as 28 inches, and weigh between 40 and nearly 100 pounds. By comparison, the under-desk ellipticals we’ve tested were as large as 23 inches long by 17.5 inches wide and weigh between 7.6 and 26.6 pounds.

Though not all of the products we test pose serious safety issues, many do. Those are reflected in our safety ratings, but can also be linked to issues with build quality and to machines made by manufacturers with no experience making treadmills.

Some products that have potential safety issues are readily available online. For example, the Consumer Product Safety Commission has published one incident report from a person who said he experienced a head injury after the under-desk treadmill he purchased from Amazon suddenly stopped, which threw him into a desk. After that person received two defective replacements, Amazon removed the product listing, but the same treadmill appeared again on Amazon under a different listing.

Though we did not test that particular product, some of the under-desk treadmills we tested had concerning problems. Some run at speeds our testers believe are unsafe for walking, and we measured some running at speeds that do not match the displayed speed. Safety keys often cause the belts to slam to a stop, which could make a user lose their balance, rather than slowing down quickly and steadily.

While there are many inexpensive under-desk treadmills available, most are “probably not worth the risk,” Bogdan says.