Many everyday seated activities — desk work, attending meetings, reading, or practising gentle seated yoga — burn very few calories per minute, but over a full day they still add up. This calculator estimates the calories burned during light-intensity sitting using the standard MET (Metabolic Equivalent of Task) method. Enter your weight, choose how long you sat, and pick an activity such as office work, restorative yoga, or seated stretching.
The calculator returns your total calories, calories per hour, calories per 30 minutes, and how long it would take to burn 100 kcal. An optional net-calorie view subtracts the calories you would burn at rest anyway, so you can see only the extra energy used by the seated activity itself. This makes the tool useful for desk workers, students, seniors, and anyone building a realistic picture of daily energy expenditure through gentle movement.
Light seated activities typically fall between 1.3 and 2.2 METs, so the results are deliberately modest — but they help make your full day more visible.
🪑 Seated Activity Details
How to Use This Calculator
Using the calculator takes about ten seconds. Start by entering your body weight in kilograms or pounds, then set the duration of your seated session in minutes. Choose the activity from the dropdown that best matches what you were doing — the closest match gives the most realistic result. If you want to see only the additional calories above your resting metabolism, tick the “net calories” checkbox. Press Calculate to see your total, plus calories per hour, calories per 30 minutes, and the estimated time it would take to burn 100 kcal. Press Reset to clear all fields, or adjust any value and recalculate as often as you like.
- Weight — enter your body weight in kg or lb and select the correct unit. The calculation converts to kilograms automatically.
- Duration — use minutes, from a short 10-minute break to a full 480-minute workday. One hour is 60 minutes.
- Activity — choose the closest light-intensity seated activity from the list. The MET value is displayed in the step-by-step breakdown.
- Net mode — tick this if you want the calculator to subtract the resting metabolism baseline from the result.
How the Formula Works
The calorie estimate is based on the MET (Metabolic Equivalent of Task) method, the same approach used in most exercise science research and activity trackers. The core formula is:
Calories = MET × weight (kg) × duration (hours)
MET is a ratio that tells you how many times more energy an activity requires compared with complete rest. Resting quietly is defined as 1.0 MET. A light seated activity like typing is approximately 1.4 METs, meaning it raises energy expenditure to 1.4 times your resting rate. When you multiply that ratio by body weight in kilograms and the time spent in hours, you get the total energy used during the session. For example, a 70 kg person sitting at a desk for two hours at 1.4 METs would burn about 196 kcal. The calculator also lets you switch to a net estimate using (MET − 1) × weight × hours, which removes the resting component and shows only the extra calories produced by the seated activity itself.
Worked Examples
Example 1: Working at a desk. A 70 kg person spends 2 hours typing and answering emails (MET 1.4). Using the gross formula: 1.4 × 70 × 2 = 196 kcal. Using the net formula: (1.4 − 1) × 70 × 2 = 56 kcal. The 56 kcal is the amount above what their body would have burned while resting in a chair for those two hours.
Example 2: Restorative yoga session. A 60 kg person does 45 minutes of light seated yoga (MET 2.0). Convert minutes to hours: 45 ÷ 60 = 0.75 hours. Gross calories: 2.0 × 60 × 0.75 = 90 kcal. Net calories: (2.0 − 1) × 60 × 0.75 = 45 kcal. Even a gentle seated routine creates a measurable energy cost, though it is much lower than brisk walking or cycling.
If you routinely do seated stretching or chair-based yoga outside your main workout, the seated stretching calculator and gentle hatha yoga calculator can help you estimate those shorter sessions.
Gross vs. Net Calories: What’s the Difference?
Gross calorie estimates include all the energy your body burned during the time you were sitting, including the calories you would have burned at rest. Net estimates subtract that resting baseline so you can see only the “extra” calories produced by the activity itself. Both are useful, but they answer different questions. If you are trying to estimate total daily energy expenditure, gross totals are the better match. If you want to know how much additional energy a seated session contributes relative to doing nothing, use net totals.
Fitness watches and smartphone apps usually report gross calories for the entire activity period. If your device says a 30-minute meeting burned 40 kcal and the net result here says 12 kcal, compare the gross figures — they are likely in closer agreement. The net option is mainly helpful when you want to isolate the movement itself.
MET values are population averages, not personal measurements. Actual energy use varies with body composition, age, genetics, fidgeting, posture, and even stress level. Treat every calculator output as a reasonable estimate rather than a precise lab result.
Reference MET Values for Seated Activities
| Seated activity | MET | Typical scope |
|---|---|---|
| Sitting quietly | 1.3 | Reading, watching television, listening |
| Writing / desk work | 1.4 | Typing, computer work, email |
| Sitting in meetings | 1.5 | Conversation, presentations, reviews |
| Seated gentle stretching | 1.8 | Desk stretching, light mobility |
| Light seated yoga | 2.0 | Restorative yoga, chair yoga |
| Sitting with light upper-body movement | 2.2 | Knitting, crafts, playing an instrument |
These values are consistent with the Compendium of Physical Activities, a widely referenced research database. Activities below 3 METs are usually considered light intensity; moderate activities such as brisk walking sit between 3 and 6 METs.
Frequently Asked Questions
Does sitting really burn calories? Yes. Every minute of life requires energy. A typical 70 kg person burns roughly 1.5 kcal per minute at rest, so an hour of quiet sitting burns around 90 kcal in gross terms. Light seated activities raise that number only slightly, which is why the results look modest.
Should I use gross or net calories? It depends on your goal. Use gross calories if you are tracking total daily expenditure or comparing with a wearable device. Use net calories if you want to know the extra cost of the seated activity above resting. The calculator shows both paths easily by toggling the checkbox.
Why are the numbers so small? Light seated movement is low-intensity by design. A 30-minute desk task might burn only 30–50 kcal. That does not mean it is useless — gentle seated routines improve circulation, joint mobility, posture, and focus. Small movements repeated across the day accumulate and support overall health.
Can I use the calculator for a whole workday? Yes. Enter 480 minutes and choose the activity that best matches your average behaviour. For a more accurate daily total, split the day into segments: sitting at a desk, sitting in meetings, seated stretching during breaks, and walking between rooms all have different MET values.
Where can I learn more about MET values? The numbers used here are based on the Compendium of Physical Activities, developed by researchers at Arizona State University and the National Cancer Institute. You can explore the official Compendium website or the Wikipedia article on metabolic equivalents for more detail.