All calculators

Heart rate zones

Heart rate reserve, not a flat percentage of maximum. The difference is where you start from, and at the easy end it is worth more than ten beats a minute.

Your training zones

Example

136–149bpm

Zone 2, the easy aerobic range most endurance work belongs in. Your estimated maximum is 187 bpm, leaving 127 bpm of reserve above a resting rate of 60.

ZoneEffortBeats per minute
1RecoveryEasy movement that costs nothing to recover from.124–136
2Easy aerobicConversational pace. Most endurance work belongs here.136–149
3ModerateCosts more than easy work and delivers less than hard work.149–162
4ThresholdHard but sustainable for a while. Limited weekly volume.162–174
5MaximalIntervals near your ceiling, measured in minutes.174–187

max = 208 − (0.7 × 30) = 187
reserve = 187 − 60 = 127
zone 2 = 60 + (127 × 0.60 to 0.70) = 136 to 149

years
Sitting still for five minutes, or before you get up.
bpm

Nothing here is stored. The numbers stay in this browser.

Read how this is worked out