What this calculator does
The Music Activity Calorie Burn Calculator estimates how many kilocalories you burn during music-related physical activities such as playing an instrument seated, performing in a brass or marching band, playing drums, conducting, or singing. It uses the universal METs (Metabolic Equivalent of Task) energy-expenditure model, so the math applies anywhere in the world. The suggested METs values are taken from the standard Physical Activity METs Table published by the National Institutes of Biomedical Innovation, Health and Nutrition (Japan), which mirror the international Compendium of Physical Activities.
How to use it
Pick a music activity from the dropdown to auto-fill its METs value, or type your own custom METs. Enter your body weight in kilograms and the duration of the activity in minutes. The calculator converts minutes to hours and returns an estimate of calories burned.
The formula explained
The core equation is $$\text{calories (kcal)} = \text{METs} \times \text{weight (kg)} \times \text{time (hours)} \times 1.05$$. A MET is the ratio of an activity's energy cost to resting metabolism; 1 MET roughly equals 1 kcal per kilogram of body weight per hour, and the 1.05 constant refines that baseline. Because the time term must be in hours, minutes are divided by 60 first.
Worked example
For a marching band performance at 4.0 METs, a body weight of 50 kg, and 60 minutes (1.0 hour): $$4.0 \times 50 \times 1.0 \times 1.05 = 210 \text{ kcal}$$ Playing a seated instrument at 2.0 METs for a 60 kg person over 90 minutes (1.5 hours): $$2.0 \times 60 \times 1.5 \times 1.05 = 189 \text{ kcal}$$
FAQ
Are these numbers exact? No. They are estimates; actual burn depends on individual fitness, intensity, and efficiency.
Why does it not subtract resting calories? This tool intentionally uses the gross formula (not METs − 1), which slightly overestimates net activity calories but matches the reference page's method.
What METs value should I use for singing? Around 1.8 METs sitting in a choir and about 2.0 METs singing while standing.