When you're trying to lose weight, your diet has a bigger impact than your workout because the bulk of the calories you burn everyday are spent just keeping you alive. This calculator gives you an idea of just how many calories you start off burning each day.
This tool calculates your Basal Metabolic Rate, which refers to the amount of calories it takes to keep you alive. Note, this calculator is by no means exact. In fact, metabolism can vary so much from one person to another that it's impossible to know an exact number. However, it's still a handy way to get some perspective.
For example, the calculator says that a 25-year-old 180cm tall male who weighs 70kg will burn over 1700 calories just staying alive. That's a hefty chunk of your diet each day. However, working out for an hour might burn a couple of hundred extra calories. Compared to the amount you burn just living, that's not a lot.
Of course, your health is about much more than your calorie count. Working out provides a ton of benefits beyond burning calories. Likewise, you can eat just the right amount of calories and still eat garbage. However, if you ever wondered just how much it takes to keep you alive each day, this calculator is a handy peek into your own body's inner workings.