Free Tool

Gulati Heart Rate Calculator for Women

Calculate women's maximum heart rate using the Gulati formula (206 - 0.88 × age). Specifically designed for female athletes.

About Gulati Formula (Women)

The Gulati formula (HRmax = 206 - 0.88 × age) was developed specifically for women based on a study of over 5,000 female participants at Northwestern University. Women's hearts respond differently to exercise than men's, and the traditional 220-age formula significantly overestimates max HR in women.

Auto-Calculate from Your Data

Upload Strava, Garmin, or Intervals.icu exports to estimate your zones

Strava vs Garmin vs TrainingPeaks: Zone Differences

Different platforms calculate training zones differently. Here's what each expects:

Strava
Zone System 5-zone (% Max HR)
Algorithm % Max HR
Customizable No

Uses simple % of max HR. Zones are fixed percentages. Cannot customize.

Garmin
Zone System 5-zone (customizable)
Algorithm % Max HR or % HRR
Customizable Yes

Supports both %Max HR and %HRR (Heart Rate Reserve). Fully customizable zones.

TrainingPeaks
Zone System 5 or 7 zone
Algorithm % LTHR (Joe Friel)
Customizable Yes

Uses LTHR-based zones. Supports pace, HR, and power. Highly customizable.

Polar
Zone System 5-zone
Algorithm % Max HR or % HRR
Customizable Yes

Uses either method. Includes sport profiles with different zone settings.