Treadmill Buying Guide: Specs Explained

Start with five checks: your space, deck size, listed max user weight, continuous motor rating, and power needs. The sections below explain each one in plain English, without product-specific numbers.

Motor ratings: continuous vs peak HP

A treadmill motor can have two ratings. Continuous horsepower is what the motor can keep up for a long time. Peak horsepower is the most it can reach for a short burst. Continuous is the more useful number for comparing treadmills. Many listings just say "HP" without saying which one, so compare like with like and check the manual if you're unsure.

Deck and belt size

The deck is the part you walk or run on. A longer deck gives you room for a longer stride, which matters more for running and for taller people. A wider deck gives you more side-to-side room. Walking needs less length than running. Check the listed running surface on each listing, and compare it with how you plan to use it.

Max user weight

This is the highest user weight the manufacturer lists for the machine. Stay within it, and think about everyone in your home who will use the treadmill.

Speed range and incline

Walking pads usually have a lower top speed than treadmills. If you want to jog or run, check the listed top speed. Incline raises the front of the deck to make it feel like a hill. Some treadmills change incline with a motor, and some need you to set it by hand. The listing usually says which.

Folding, storage and space

Folding treadmills fold up or flat to save space. Before you buy, measure the floor, the clearance the manual asks for behind and beside the treadmill, and your ceiling height. If you plan to store it under a bed or in a closet, compare the listed folded size with that space.

Noise

Noise depends on the machine, your speed and your floor. Most listings don't give a noise level. A mat can help on hard floors, and a ground-floor room is usually easier on neighbors below.

Power and outlet needs

Treadmills draw a lot of power. Some manufacturers ask for a dedicated circuit, and many say not to use an extension cord or power strip. Read the electrical section of the manual before you plug in. If you're unsure, ask a licensed electrician. Follow the manufacturer's manual.

Warranty basics

Treadmill warranties often split into parts: the frame, the motor, other parts, and labor. Each part can have a different length. Read the listed terms, and check what you need to do to keep the warranty valid, like registering the machine or following the care schedule.

Walking pad specs that differ

• Speed range: many walking pads top out at a walking pace. 2-in-1 models go faster.
• Handle: some pads have a fold-up handle or rail. Pads without one fit under a desk more easily.
• Desk fit: check the deck width, the pad's height and whether it has a remote or app.

Ready to pick?

See home treadmill picks, walking pad picks, folding picks, picks by tier, and safety and care.

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