Which is better: Power Meter or Heart Rate Monitor?

CoachingCOMPARISON

POWER METER VS HEART RATE MONITOR

QUICK VERDICT

Power is the gold standard — it measures output directly while heart rate measures response. But heart rate still has value for pacing easy rides, monitoring fatigue, and riders on a budget.

SIDE BY SIDE

FEATURE	POWER METER	HEART RATE MONITOR
Measures	Work output (watts)	Physiological response (bpm)
Instant feedback	Yes	Lags 30-90 seconds
Affected by fatigue	No	Yes (cardiac drift)
Affected by heat	No	Yes
Cost	$200-600	$30-80
Pacing value	Excellent	Good for easy rides
Training zones	7-zone Coggan model	5-zone approximate

CHOOSE POWER METER IF

✓Serious training with interval targets
✓Event pacing
✓FTP tracking and progression
✓Anyone who can afford it

CHOOSE HEART RATE MONITOR IF

✓Budget-conscious riders
✓Monitoring Zone 2 easy days
✓Detecting overtraining via resting HR
✓Beginners learning intensity

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