Max Heart Rate for a 66-Year-Old Woman

The Gulati formula estimates a maximum heart rate of about 148 bpm for a 66-year-old woman. Population variability is roughly ±10–12 bpm, so your true HRmax could sit anywhere between 138 and 158. This page compares the five main formulas at your age and shows how the difference propagates into your training zones.

Gulati estimate: 148 bpm. Likely range 138–158 bpm. The five formulas differ by up to 15 bpm at your age — the comparison table below shows exactly how much.

Your Max Heart Rate

Estimated ceiling — used to derive every zone

Age

Resting HR (optional)

Biological Sex

All Five Formulas at Age 66

Formula	Equation	HRmax at age 66
Fox	220 − age	154
Tanaka	208 − 0.7 × age	162
Gellish	207 − 0.7 × age	161
Nes / HUNT	211 − 0.64 × age	169
Gulati	206 − 0.88 × age	148

Gulati (2010) is generally the most representative for women — it was derived from 5,437 female participants and corrects the systematic overestimation the male-derived formulas produce.

Key Takeaways

HRmax estimate

148 bpm (Gulati)

Variability

±10 bpm across the population

Most accurate

Supervised field test on a fresh day

Frequently Asked Questions

What is the maximum heart rate for a 66-year-old woman?

The Gulati formula estimates a maximum heart rate of about 148 bpm for a 66-year-old woman. Your true HRmax is likely between 138 and 158 bpm.

Which formula is most accurate for a 66-year-old woman?

Gulati (2010) is generally recommended for women. It was derived from 5,437 female participants and corrects the systematic overestimation seen with male-derived formulas like Fox and Tanaka.

Why do the five formulas give different results?

Each formula was derived from a different study population. Genetics account for roughly 50% of individual variation in HRmax, so no single equation fits everyone. A supervised maximal effort test is the only way to know your true HRmax.

Can I measure my real HRmax at home?

Yes, if you are healthy and cleared for vigorous exercise. Warm up thoroughly, then perform a 3–5 minute all-out effort finishing with a 30–60 second sprint. Record the peak value on a chest strap monitor. Do not attempt this if you have a heart condition or are on rate-limiting medication.

Max Heart Rate for a 66-Year-Old ManThe Tanaka formula estimates a maximum heart rate of about 162 bpm for a 66-year-old man. Population variability is roughly ±10–12 bpm, so your true HRmax could sit anywhere between 152 and 172. This page compares the five main formulas at your age and shows how the difference propagates into your training zones.Max Heart Rate for a 65-Year-Old ManThe Tanaka formula estimates a maximum heart rate of about 163 bpm for a 65-year-old man. Population variability is roughly ±10–12 bpm, so your true HRmax could sit anywhere between 153 and 173. This page compares the five main formulas at your age and shows how the difference propagates into your training zones.Max Heart Rate for a 65-Year-Old WomanThe Gulati formula estimates a maximum heart rate of about 149 bpm for a 65-year-old woman. Population variability is roughly ±10–12 bpm, so your true HRmax could sit anywhere between 139 and 159. This page compares the five main formulas at your age and shows how the difference propagates into your training zones.Heart Rate Zones for a 66-Year-OldFor a 66-year-old, the Tanaka formula estimates a maximum heart rate of about 162 bpm. That puts your Zone 2 (easy aerobic) at roughly 97–113 bpm and your Zone 4 (threshold) at 130–146 bpm. Below you will find the full 5-zone table, a formula comparison, and a calculator that personalises the numbers if you enter your resting HR.Zone 2 Heart Rate for a 66-Year-OldA 66-year-old training in Zone 2 should target roughly 97–113 bpm, calculated as 60–70% of an estimated HRmax of 162. This is the aerobic-base zone where mitochondrial density, fat oxidation and stroke volume adapt most strongly — and the intensity you can hold in full conversation for 60–90 minutes.Heart Rate Zones for a 65-Year-OldFor a 65-year-old, the Tanaka formula estimates a maximum heart rate of about 163 bpm. That puts your Zone 2 (easy aerobic) at roughly 98–114 bpm and your Zone 4 (threshold) at 130–147 bpm. Below you will find the full 5-zone table, a formula comparison, and a calculator that personalises the numbers if you enter your resting HR.

Continue your training

Open the full 5-zone calculator

All formulas, all zones, shareable results

Read the pillar guide

Complete explanation of the 5-zone model

Learn the Karvonen method

Personalise zones using resting heart rate

Disclaimer: This calculator is for informational purposes only and does not provide medical advice. Always consult with a healthcare professional before starting any new exercise program.