Heart Rate Recovery Calculator

The first minute after intense exertion captures the steepest, most physiologically meaningful part of the recovery curve, when parasympathetic reactivation is working hardest to pull heart rate back down — that's why sports science commonly uses 1-minute heart rate recovery specifically as a fitness benchmark. The 2-minute figure is still reported for additional context, but the fitness score and rating are both driven by the 1-minute number.

The Tanaka formula (208 minus 0.7 times age) was developed from a larger, more diverse dataset than the older 220-minus-age rule of thumb and tends to track measured maximum heart rate more accurately, especially for older adults, where the simpler formula increasingly overestimates the true value. It's used here purely to contextualize your peak heart rate as a percentage of your theoretical max, not to score your recovery.

It can suggest that, but not always — pacing, technique efficiency, and how much of the round involved genuine high-output exchanges versus positioning and feints all affect how close you actually push toward your theoretical maximum. A consistently low percentage across multiple hard rounds is worth investigating, but a single round's reading shouldn't be over-interpreted on its own.

No — it's a simplified stand-in built entirely from your 1-minute recovery number, scaled to a 0-100 range for easy tracking over time, not an actual measurement of heart rate variability. True HRV assessment requires beat-to-beat interval data and specialized analysis, which this calculator doesn't attempt; treat this score as a convenient trend indicator rather than a clinical-grade autonomic measurement.