heart rate calculator????

[junior360]

How do I find out what my heart rate should be at when doing cardio to burn fat?

 

[appleton111]

Figure out your max heart rate (Max Heart Rate = 220 minus your age). And then determine your fat-burning range, which is 60% to 70% of your max heart rate. Use a fitness app, like Wahoo Fitness, MapMyFitness, or RunKeeper, to calculate your 5 heart rate zones.