An arc trainer combines the smooth gliding motion of an elliptical with a low-impact stride designed to feel gentle on the knees and hips. Unlike a treadmill, there is no impact on landing, which makes it a popular choice for recovery days, longer steady-state sessions, and people managing joint discomfort. This calculator estimates how many calories you burn per hour on an arc trainer — and for any session length — using your body weight, workout duration, and the effort level you select.
Calorie burn is driven by metabolic equivalents (METs), a standard way to express exercise intensity. At a given intensity, a heavier body uses more energy because moving more mass requires more fuel. You can pick an effort level from light recovery to high-intensity intervals, or use the preset quick buttons to set a common intensity. The result shows your per-hour burn, the total for your planned session, and a simple breakdown of the calculation.
🧮 Arc Calories Per Hour
Estimate calorie burn on an arc trainer based on weight, effort, and time.
How to Use This Tool
Enter your body weight in kilograms or pounds, choose the effort level that best matches your arc trainer session, and set the duration to however long you plan to exercise. The default duration is 60 minutes, so if you simply press Calculate you will get a straight per-hour estimate.
- Weight. This is the single biggest factor in the estimate because the MET formula is based on kilograms of body mass. If you enter pounds, the calculator converts using 1 lb = 0.4536 kg.
- Effort level. Choose from very light, light, moderate, vigorous, or max effort. The quick buttons above the intensity dropdown are just shortcuts; the selected option is always what the calculation uses.
- Duration. Use minutes, not hours. A 45-minute workout would be entered as 45, and the calculator converts it to 0.75 hours for the total calorie figure.
How It Works
This calculator uses the standard metabolic equivalent (MET) method. One MET is the energy your body burns at rest, about 1 kcal per kilogram of body weight per hour. When you exercise at 5 METs, you burn roughly five times your resting rate.
The core equation is:
calories per hour = MET value × body weight in kg
For a shorter or longer session, multiply the per-hour number by the session length in hours:
total calories = calories per hour × (minutes ÷ 60)
The MET values used here are rounded from comparable low-impact cardio activities in the Compendium of Physical Activities. Arc trainers are not listed as a separate entry in most versions of the compendium, so these values are deliberately based on smooth, low-impact cardio equipment of similar demand. Because MET values are population averages, your personal burn can differ by 10–20% or more depending on individual factors.
Worked Examples
Example 1: 70 kg person, moderate session, 60 minutes. MET = 5.0, so calories per hour = 5.0 × 70 = 350 kcal. After 60 minutes, total = 350 × (60 ÷ 60) = 350 kcal.
Example 2: 155 lb person, light session, 45 minutes. Convert weight: 155 ÷ 2.2046 = 70.3 kg. MET = 3.5, so calories per hour = 3.5 × 70.3 = 246 kcal/hr. For 45 minutes, total = 246 × 0.75 = 185 kcal.
Example 3: 90 kg person, vigorous session, 30 minutes. MET = 6.5, calories per hour = 6.5 × 90 = 585 kcal/hr. Total = 585 × 0.5 = 293 kcal. The same person in a max-effort interval session at 8.0 MET would burn 720 kcal/hr, so intensity creates a huge swing.
Standard MET Values Used in This Calculator
| Effort level | Typical feel | MET | 70 kg kcal/hr |
|---|---|---|---|
| Very light / recovery | Easy breathing, low resistance | 2.5 | 175 |
| Light | Can talk comfortably | 3.5 | 245 |
| Moderate | Noticeably faster breathing, still can talk in short sentences | 5.0 | 350 |
| Vigorous | Breathing hard, difficult to talk | 6.5 | 455 |
| Max effort | Sprint-like, unsustainable for a full hour | 8.0 | 560 |
Factors Affecting Accuracy
Machine calorie displays are often optimistic, but MET formulas are only approximate too. The following factors can shift your true burn:
- Body composition: Muscle tissue uses more energy than fat at the same body weight, so two people of the same weight can burn different amounts.
- Machine resistance and stride speed: The same effort setting feels different on different machines, and using your arms actively on the moving handles increases energy cost.
- Weight changes: If you have lost or gained weight since you last used a calculator, update the weight input; a 5 kg difference can add or remove about 25 kcal/hr at moderate intensity.
- Fitness level: A well-trained person often becomes mechanically efficient and may burn slightly fewer calories at the same external workload than a less trained person.
- Genetics and hormones: Individual metabolic rate varies, so treat any estimate as a planning tool, not a precise medical measurement.
Frequently Asked Questions
Can I use an arc trainer every day? Because it is low-impact, many people can use an arc trainer most days, especially at light or moderate effort. Recovery and total weekly training volume still matter, so listen to your body and include rest days when needed.
Why does the machine at my gym show a much higher number? Gym machine estimates often include a person's total energy expenditure and use generous assumptions. The MET method here is conservative and based on population averages, so a lower number is not necessarily wrong.
How do I convert my result to steps? Arc trainer steps are not the same as walking steps because the motion is a glide and the machine measures its own stride. If you need a step equivalent, use the machine's own step display and compare it with a general step-to-calorie conversion of roughly 20–30 steps per kcal for cardio, or use a dedicated steps-equivalent calculator.
Does the arc trainer burn more calories than an elliptical or a treadmill? At the same perceived effort, calorie burn tends to be similar across smooth cardio machines because the MET estimates are close. The real advantage of an arc trainer is joint comfort and the ability to sustain longer low-impact sessions, not a dramatically higher burn.