# StairMaster vs Incline Treadmill: Which Burns More, and Which One Will You Actually Use? Aviron Active blog article by The A-Team, published November 9, 2026 and last updated November 2026. It compares the StairMaster (stepmill) and a steep incline treadmill on calories, muscles, knee demand, incline needed, home footprint and long-term use. **Short answer:** At the same effort, a StairMaster and a steep incline treadmill burn almost the same calories. The 2024 Compendium of Physical Activities rates a stepmill at 9.3 METs and walking up an 11 to 20% grade at 8.8. The StairMaster leans harder on your quads and glutes in one fixed motion. An incline treadmill works your glutes, hamstrings and calves, and it also lets you walk, run and hike. For a home gym, a treadmill that reaches 15% or more can do the StairMaster's job and still be a regular treadmill the rest of the week. Full disclosure from the article: Aviron makes the Justice, Podium and Summit treadmills. Aviron does not make a stair climber. ## Quick Answer Summary - Calorie burn: about the same at matched effort (9.3 METs stepmill vs 8.8 METs for an 11 to 20% grade walk) - Muscles: StairMaster emphasizes quads and glutes; incline treadmill emphasizes glutes, hamstrings and calves - Knees: incline treadmill keeps stride closer to normal walking - Incline needed: about 15% at 3 mph to match StairMaster effort - Best for home: incline treadmill, which also walks and runs ## Table of Contents - Which Burns More Calories, a StairMaster or an Incline Treadmill? - What Muscles Does Each One Work? - Which Is Easier on Your Knees? - How Steep Does a Treadmill Need to Be to Replace a StairMaster? - StairMaster vs Incline Treadmill: Side by Side - Should You Buy a StairMaster or an Incline Treadmill for Home? - Which One Will You Actually Use? - Try It: A 20-Minute StairMaster-Style Treadmill Climb - So, StairMaster or Incline Treadmill: Which Should You Choose? - Frequently Asked Questions ## Which Burns More Calories, a StairMaster or an Incline Treadmill? Neither, really. At matched effort they land in the same place. The 2024 Adult Compendium of Physical Activities, the reference researchers use to estimate the energy cost of exercise, gives these values in METs (multiples of your resting burn): | Workout | METs | 30 min at 160 lb | 30 min at 200 lb | | --- | --- | --- | --- | | Flat treadmill walk, 3 to 3.4 mph | 3.8 | About 145 cal | About 180 cal | | Uphill walk, 6 to 10% grade, moderate to brisk | 7.0 | About 265 cal | About 335 cal | | Uphill walk, 11 to 20% grade, slow to moderate | 8.8 | About 335 cal | About 420 cal | | Stepmill (StairMaster-style stair treadmill), general | 9.3 | About 355 cal | About 445 cal | MET values come from the walking and conditioning exercise tables of the 2024 Compendium. Calories are estimated as METs x 3.5 x body weight in kg / 200 per minute, so your own numbers will vary with fitness and pace. That's a gap of about 20 calories per half hour between a stepmill and a steep treadmill walk, or roughly three almonds. Effort moves the number far more than the machine does. A steady hike at 15% beats a lazy stair pace, and a fast stair pace beats a stroll at 6%. Pick the machine that lets you work hard for longer, and that you'll get back on tomorrow. ## What Muscles Does Each One Work? Both machines train the same lower-body muscles: glutes, quads, hamstrings and calves. They split the work differently. A StairMaster is a never-ending set of step-ups. Each step starts from a deeply bent knee and drives you straight up, so your quads and glutes do most of the lifting. Biomechanics researchers put the knee bend and knee-extensor load of stair walking at about 50% above level walking. Incline walking moves more of the work to the back of your body. In a treadmill study by Franz and Kram, walking up a 9-degree slope (about a 16% grade) increased glute activity 345% and hamstring activity 635% compared with flat walking. Calf activity went up too. Does the StairMaster build glutes? Yes, and so does a steep incline. For real size you'll still want some strength training, but both make your glutes work far harder than a flat walk does. One rule applies to both machines: ease off the rails. Hanging on takes your body weight out of the climb, and lifting your body weight is the whole point. A light touch for balance is fine. ## Which Is Easier on Your Knees? Both are low impact compared with running. One foot is always in contact, so you never land from a jump. The difference is how far your knee bends under load. Every stair step asks your knee to straighten from a deep bend while carrying your full body weight. Research on stair walking notes that stress behind the kneecap can reach two to four times what it is on level ground. If stairs bother your knees, an incline treadmill keeps your stride closer to normal walking, and you can drop the grade a few percent without changing machines. Working around an injury? A physical therapist can tell you which angles your knees are happy with. ## How Steep Does a Treadmill Need to Be to Replace a StairMaster? Around 15% for most people. In the Compendium, walking up an 11 to 20% grade lands next to the stepmill. The American College of Sports Medicine's walking equation agrees: 3 mph at a 15% incline works out to about 9.5 METs, right in StairMaster territory. The incline ceiling is the spec to check. The popular 12-3-30 workout (12% at 3 mph for 30 minutes) is a great start, but for StairMaster-level effort you want at least 15%. The Aviron Justice tops out at 15% and the Podium at 18%. The article also links to a guide on how much incline you need for your goals: https://www.avironactive.com/blog/best-incline-treadmill/ Past 20%, you're into incline-trainer territory. The Aviron Summit climbs to 42%, one of the steepest grades on any home treadmill, and drops to a 6% decline for downhill work. Top speed is 8 mph above a 15% grade and 6 mph above 25%. Garage Gym Reviews' tester said they "felt very stable while walking on this treadmill at all inclines." Source: https://www.garagegymreviews.com/aviron-summit-treadmill-review ![Aviron Summit incline treadmill with hiking handles and LED belt light strip](https://cdn.builder.io/api/v1/image/assets%2F45e65c713405486e8fe2ec324b61c21f%2F3a60ea9719964b90a746a419339f0bf5?format=webp&width=240&height=240&fit=cover) ### Aviron Summit Treadmill - -6% to 42% incline, a 4.5 CHP motor, a 22" x 61" deck and hiking handles with built-in incline and speed keys. - 30-day risk-free home trial - Financing available - See the Summit: https://www.avironactive.com/shop/aviron-summit-treadmill/ ## StairMaster vs Incline Treadmill: Side by Side | | StairMaster (stepmill) | Incline treadmill | | --- | --- | --- | | Movement | Continuous step-ups on a revolving staircase | Walking, hiking or running uphill | | Energy cost | 9.3 METs at a general pace | 8.8 METs at an 11 to 20% grade | | Muscle emphasis | Quads and glutes | Glutes, hamstrings and calves | | Knee demand | Deep bend under load on every step | Closer to normal walking; you set the grade | | Intensity controls | Step speed (24 to 162 steps per minute on the StairMaster 4G) | Speed and incline, adjusted separately | | Also does | Climbing only | Flat walks, runs, intervals, decline (Summit) | | For beginners | Can feel intense from the first minute | Start flat and add grade as you go | | Home footprint | StairMaster 4G: 54" x 29" | Aviron Summit: 67" x 37"; Podium: 80" x 37", folds to 49" | | Ceiling | 4G fits ceilings as low as 8 ft | Summit: your height plus 30 inches | StairMaster is a trademark of Core Health & Fitness. StepMill specs are from Core Health & Fitness; Aviron specs are from Aviron. ## Should You Buy a StairMaster or an Incline Treadmill for Home? In a gym, you don't have to choose. At home, it comes down to how many jobs you want one machine to do. A stepmill does one thing very well. The StairMaster 4G takes a 54 by 29 inch footprint and fits ceilings as low as 8 feet, so it takes less floor than the Summit. It only climbs, though, and commercial stepmills cost thousands of dollars. An incline treadmill covers the climbing plus everything else: easy walks, runs, intervals and the 12-3-30 on days you want something gentler. It's also an easier sell to others in the house, since a partner who just wants to jog can use it too. If you run as well as climb, the Aviron Podium gives you an 18% incline and 14 mph, and it folds away when you're done. ![Aviron Podium folding treadmill for runners](https://cdn.builder.io/api/v1/image/assets%2F45e65c713405486e8fe2ec324b61c21f%2F6484e4779e37405ca0ba6c6bd59c45be?format=webp&width=240&height=240&fit=cover) ### Aviron Podium Treadmill - 18% incline, 14 mph and a 4.5 CHP brushless motor on a 22" x 60" deck that folds to a 49-inch footprint. - 30-day risk-free home trial - Financing available - See the Podium: https://www.avironactive.com/shop/aviron-podium-treadmill/ ## Which One Will You Actually Use? The best cardio machine is the one you're still using after the motivation cliff, the point around month two when the novelty is gone and every session feels like a chore. Stepmills are famous for clock-watching, because minute nine of a steady climb can feel like minute forty. Cardio machines were engineered to be boring, while the phone in your pocket was engineered to be hard to put down. Aviron applies that game psychology to the treadmill. A climb can be the six-class Hill Climb program, a progressive Ascent hike of 1 to 4 miles, Clockwork incline intervals chasing a distance bonus, or a scenic walk up Serra de Monchique in Portugal. SkyQuest is a science-backed game where you climb, descend and score against other members. Points, streaks, levels and live competition run through every workout in Aviron World: https://www.avironactive.com/workouts/ Workouts that pull you back are a big part of why **92% of Aviron members are still working out a year later**. ## Try It: A 20-Minute StairMaster-Style Treadmill Climb Want to test the swap? This climb reaches StairMaster-level effort without any running. Keep your hands light on the rails, and if you can't hold a grade without grabbing on, drop it 2 to 3%. | Time | Speed | Incline | How it should feel | | --- | --- | --- | --- | | 0 to 3 min | 2.5 to 3.0 mph | 3 to 5% | Easy warm-up | | 3 to 8 min | 3.0 mph | 10% | Breathing harder, still chatty | | 8 to 13 min | 2.8 to 3.0 mph | 15% | StairMaster effort: short sentences only | | 13 to 17 min | 2.0 to 2.5 mph | 20 to 25% on the Summit, or hold your max | Hard. Slow down and keep climbing | | 17 to 20 min | 2.5 mph | 2 to 3% | Cool-down | New to incline? Start with the 12-3-30 and build toward this. If you have a heart or joint condition, check with your doctor before adding steep grades. ## So, StairMaster or Incline Treadmill: Which Should You Choose? **Choose a StairMaster if:** - You're training for a stair race, a firefighter test or anything with a lot of stairs - Your gym already has one and you love the step-up feel - You mainly want quad and glute endurance from a single motion **Choose an incline treadmill if:** - You want one machine at home that walks, runs and climbs - Your knees prefer a walking stride to deep step-ups - You're new to cardio and want to build up gradually - Other people in the house will use it too Deciding between Aviron models? Compare Justice, Podium and Summit side by side: https://www.avironactive.com/blog/which-aviron-treadmill-justice-podium-summit/ **Our verdict:** For a home gym, the incline treadmill wins. At 15% and up it matches a StairMaster's calorie burn and is easier to ease into, and on other days it's still a regular treadmill. Get the Aviron Summit if climbing is your thing, since 42% is about as steep as home treadmills go. Get the Podium if you also run and want it to fold. Both come with a 30-day risk-free home trial. ## Frequently Asked Questions ### Is a StairMaster better than an incline treadmill? Not overall. At matched effort they burn about the same: 9.3 METs for a stepmill and 8.8 for walking up an 11 to 20% grade. A StairMaster is better for stair-specific training and quad endurance. An incline treadmill is more versatile, easier for beginners and kinder to knees that dislike deep bends. ### Is a StairMaster or an incline treadmill better for weight loss? Neither has a real edge. Weight loss comes from total activity over weeks, plus what you eat, so the better machine is the one you'll use most often. At 160 pounds, 30 minutes of stair-level effort on either burns roughly 335 to 355 calories. ### Which builds glutes better, the StairMaster or incline walking? Both work your glutes hard. A StairMaster loads glutes and quads together through deep step-ups, while incline walking leans more on glutes, hamstrings and calves. In one treadmill study, walking up a 16% grade increased glute activity 345% over flat walking. Add strength training if you want bigger glutes. ### What treadmill incline is equal to a StairMaster? Roughly 15% at about 3 mph. The Compendium puts walking up an 11 to 20% grade at 8.8 METs, close to a stepmill's 9.3, and the ACSM walking equation puts 3 mph at 15% at about 9.5 METs. The 12-3-30 workout (12% at 3 mph) is a little easier. ### How much does a StairMaster cost for home? StairMaster's compact 4G StepMill carries a $7,999 list price, and US retailers had it on sale for about $6,700 in November 2026. Budget home stair climbers start around $1,300. Any stair climber only climbs, while an incline treadmill also walks and runs. ## Shop the Aviron Summit Climb to 42% without watching the clock. The Summit pairs one of the steepest inclines on a home treadmill with games, classes and scenic routes that make the climb go faster. 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