Target Heart Rate Calculator

Maximum heart rate is estimated as 220 minus age, a rough population average that can be off by 10 or more beats per minute for an individual. The Karvonen method takes target = resting HR + intensity x (max HR - resting HR). The 50-60%, 70-80% and 85-95% rows are simply those percentages of heart rate reserve (max minus resting). They are not labelled as intensity levels and are not a guideline or prescription. If you have a heart condition or take heart-rate-lowering medicine, ask your doctor for your own range.