---
title: "Heart Rate Zone Calculator — Max HR, Training Zones (AHA, BHF, Tanaka)"
description: "Calculate your maximum heart rate and 5 training zones using Fox & Haskell, Tanaka, or Gulati formula. References AHA (US), BHF (UK), and Heart Foundation Australia."
url: "https://worldcalculators.org/calculators/heart-rate/"
canonical: "https://worldcalculators.org/calculators/heart-rate/"
---

# Heart Rate Zone Calculator

Calculate your maximum heart rate and 5 training zones using Fox & Haskell, Tanaka, or Gulati formula. References AHA (US), BHF (UK), and Heart Foundation Australia.

## Quick answer

Classic formula: Max HR = 220 − age (AHA, BHF). More accurate: Tanaka = 208 − 0.7×age (better for older adults). Gulati = 206 − 0.88×age (validated for women, Mayo Clinic). For a 35-year-old: 185 bpm (Fox), 184 bpm (Tanaka), 175 bpm (Gulati). Target zone for cardiovascular benefit: 50–85% of max HR.

## Sources & Methodology

Target heart-rate zones use the age-predicted maximum heart rate and the percentage ranges recommended by the American Heart Association.

Source: https://worldcalculators.org/calculators/heart-rate/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.