Ever wondered how many calories you burn while sitting through a workday, a long lecture, or a movie marathon? This Sit Calories Per Hour Calculator provides a science-based estimate based on your body weight, the type of seated activity, and how long you stay seated. Although sitting burns relatively few calories, those calories can add up over several hours and are worth tracking when you are managing daily energy balance or planning light movement goals.
The calculator uses the MET (metabolic equivalent) method commonly used by exercise physiologists. Choose a seated context, enter your weight in kilograms or pounds, set a duration in minutes or hours, and the tool instantly shows calories per minute, calories per hour, and total calories for the session. A step-by-step breakdown makes it easy to see how each figure is calculated.
This tool is useful for desk workers, students, gamers, remote employees, and anyone building a gentle movement or weight-management plan. It also provides a helpful baseline for comparing seated time with light activities such as walking or yoga.
🪑 Sit Calories Per Hour Calculator
Estimate the calories you burn while sitting — at your desk, watching TV, reading, or doing light seated tasks.
📊 Results
How to Use This Tool
Enter your weight using either kilograms or pounds — the unit selector converts automatically. Choose the seated activity that best matches what you're doing, then set the duration. The quick presets are handy for a 30-minute lunch break, a 1-hour meeting, a 2-hour movie, or an 8-hour workday. Click Calculate Calories to see your results. The step-by-step breakdown explains exactly how the total was reached, so you can use the output with confidence.
- Enter your current body weight and select kg or lb.
- Pick the sitting context that most closely matches your activity.
- Set the session duration in minutes or hours, or tap a preset.
- Press Calculate Calories and read your per-minute, per-hour, and total estimates.
How the Calculation Works
MET stands for metabolic equivalent of task. One MET is roughly the energy cost of sitting quietly at rest, and higher MET values mean more energy is spent. The calculator uses the standard MET formula used by exercise physiologists: calories per minute = MET × 3.5 × weight in kg ÷ 200. The 3.5 represents average resting oxygen consumption (3.5 mL/kg/min), and the 200 converts the result into calories per minute. Once it knows calories per minute, the tool multiplies by 60 for the hourly figure and by your chosen duration for the session total.
Formula:
Calories per minute = MET × 3.5 × weight(kg) ÷ 200
Calories per hour = calories per minute × 60
The MET values used here are based on the Compendium of Physical Activities. Quiet sitting has a MET around 1.0, while desk work and typing are closer to 1.3. This is why sitting burns roughly 70–110 kcal per hour for most adults, far less than walking or yoga, but still meaningful when summed over a full workday.
Worked Examples
Example 1: A 68 kg person does desk work (1.3 MET) for 90 minutes.
Calories per minute = 1.3 × 3.5 × 68 ÷ 200 = 1.55 kcal/min.
Calories per hour = 1.55 × 60 = 92.8 kcal.
Total for 90 minutes = 1.55 × 90 = 139.2 kcal.
Example 2: A 150 lb adult converts to 68.0 kg and watches TV quietly (1.0 MET) for 2 hours.
Calories per minute = 1.0 × 3.5 × 68.0 ÷ 200 = 1.19 kcal/min.
Calories per hour = 1.19 × 60 = 71.4 kcal.
Total for 2 hours = 1.19 × 120 = 142.9 kcal.
Reference: Common MET Values for Sitting
The table below shows representative MET values and the resulting hourly calorie burn for a 70 kg adult. Actual values vary with body size, posture, and individual metabolism.
| Seated activity | MET | Approx. calories per hour (70 kg) |
|---|---|---|
| Quiet sitting, reading, watching TV | 1.0 | ≈73.5 kcal |
| Sitting at a desk, typing, computer work | 1.3 | ≈95.6 kcal |
| Sitting, eating, talking, light seated tasks | 1.5 | ≈110.3 kcal |
| Sitting, active fidgeting, gesturing, shifting | 1.8 | ≈132.3 kcal |
Factors That Affect the Estimate
Weight is the largest input, but it is not the only one. Muscle mass, age, genetics, room temperature, and even what you ate or drank earlier can shift energy expenditure by 10–20% in either direction. Small movements while seated also matter: tapping a foot, reaching for a phone, shifting in your chair, or gesturing while talking all add calories beyond a perfectly still posture. If you are a frequent fidgeter, the 1.8 MET option will give a more realistic result.
- Choose the activity option that matches your actual behavior rather than your intention.
- Convert your weight carefully; 1 kg = 2.20462 lb.
- Break long periods into segments if you get up for breaks.
- Use the estimate as a planning guide, not a training prescription.
Frequently Asked Questions
Why are my numbers lower than a walking or cycling estimate?
Sitting has a very low MET value (usually 1.0–1.3), while a gentle walk is about 3.0–3.5 MET and cycling may be 4–8 MET depending on effort. The calculator is measuring baseline seated time, not structured exercise, so the totals are naturally modest.
Does fidgeting really change the number?
Yes, but not dramatically. Small muscle contractions increase oxygen consumption. For a 70 kg adult, the difference between quiet sitting (1.0 MET) and active fidgeting (1.8 MET) is roughly 59 kcal per hour. Over an 8-hour day, that can add up to almost 470 kcal.
Can I use this for a full sedentary workday?
Yes, set the duration to 480 minutes or 8 hours. The result is a rough total for the time you are actually seated, not your entire day. If you stand up, walk to a meeting, or take a lunch break, count those separately.
How accurate is the MET formula?
MET tables are built from group averages in lab studies, so individual results can vary by 10–20% or more. The American Heart Association has a concise explanation of METs if you want to learn more: Metabolic Equivalent of Task (MET).