The short answer
They can, but many rooms need a firm protective surface to improve stability, airflow and floor protection. This assumes that the exact machine is used as its manufacturer directs and that it fits the intended user, desk and floor.
Apply it to a real setup
The answer changes with the floor, desk geometry, stored orientation and the route used to move the machine. In other words, the product category alone cannot answer “Can Under Desk Treadmills Be Used on Carpet?” without checking the selected variation and the room around it.
Measure the operating area and storage path, then compare them with the exact housing and belt dimensions. For “Can Under Desk Treadmills Be Used on Carpet?,” reviews can add ownership context, but only when they refer to the same model and describe conditions close to yours.
A practical check
- Write down the one measurement or behavior that would make the setup fail.
- Confirm the usable belt area separately from the outside machine dimensions.
- Locate the stop control and understand how it behaves at a working pace.
- Save the exact model, seller, manual, return terms and warranty contact.
Bottom line
Use “Can Under Desk Treadmills Be Used on Carpet?” as a decision prompt, not as a promise that applies to every walking pad. The best answer is the one supported by the current manual, the selected listing and a measured setup.