Target Heart Rate Calculator
Use this target heart rate calculator to pinpoint your exact training zones in beats per minute (BPM). Whether your priority is fat loss, building a solid aerobic base, or setting a running PR, pacing yourself by heart rate keeps every workout productive and injury-free.
What is a Target Heart Rate?
Your target heart rate is the ideal range of beats per minute (BPM) to aim for during exercise. Operating within this range ensures your cardiovascular system works hard enough to build endurance and burn calories without causing excessive physical fatigue.
Training intensity is split into distinct zones, starting with active recovery and moving up to your maximum anaerobic limit. Using a target heart rate calculator by age and resting pulse allows you to match your effort to your specific fitness goals instead of guessing.
Max Heart Rate Calculator (by Age Formula) & Karvonen Method
A standard max heart rate calculator for exercise uses the traditional age formula. For better precision, our tool pairs this with the Karvonen formula by factoring in your resting heart rate (RHR) to determine your true Heart Rate Reserve (HRR).
1. Maximum Heart Rate (MHR) = 220 - Age 2. Heart Rate Reserve (HRR) = MHR - Resting Heart Rate (RHR) 3. Target Heart Rate (THR) = (HRR × Intensity %) + RHRWorked Example (35-Year-Old with 60 BPM Resting Pulse):
- Max Heart Rate: 220 - 35 = 185 BPM
- Heart Rate Reserve: 185 - 60 = 125 BPM
- 70% Intensity Target: (125 × 0.70) + 60 = 147.5 BPM
Target Heart Rate Zone Calculator for Running and Fitness
1. Zone 1 (50% – 60% MHR) - Active Recovery: Very light effort. Perfect for warm-ups, cool-downs, and clearing metabolic waste on easy recovery days.
2. Zone 2 (60% – 70% MHR) - Fat Burning & Base Aerobic: Conversational pace. This is your target heart rate for fat burning, where your body oxidizes lipids efficiently while building long-term capillary density.
3. Zone 3 (70% – 80% MHR) - Aerobic Endurance: Moderate-intensity effort. Improves lung capacity and blood flow efficiency, serving as the core pace for marathon and half-marathon runners.
4. Zone 4 (80% – 90% MHR) - Anaerobic Threshold: Vigorous-intensity training. Shifts your muscles into glycolytic energy pathways, improving lactate clearance and raw speed.
5. Zone 5 (90% – 100% MHR) - Maximum Effort: All-out sprints and short intervals. Develops peak power output and fast-twitch muscle recruitment.
Frequently Asked Questions
What is a good target heart rate for my age?
A good target heart rate depends on your workout goal. For moderate-intensity exercise, aim for 50% to 70% of your maximum heart rate. For vigorous-intensity training like tempo runs or intervals, target 70% to 85% of your max.
How do you calculate your target heart rate?
Find your Maximum Heart Rate (220 minus age), subtract your Resting Heart Rate to determine your Heart Rate Reserve (HRR), multiply by your target intensity percentage, and add your Resting Heart Rate back in.
What is the 220 minus age formula?
The 220 minus age formula is the classic method to estimate your Maximum Heart Rate (MHR) in beats per minute. For example, a 30-year-old has an estimated MHR of 190 BPM (220 - 30 = 190).
What heart rate zone burns the most fat?
Zone 2 (60% to 70% of maximum effort) burns the highest percentage of calories from fat. While higher zones burn more total calories per minute, Zone 2 relies primarily on stored lipids for fuel.
Target Heart Rate Calculator
Estimated Max HR: 187 BPM | Reserve (HRR): 127 BPM
* Target heart rate calculations are based on ACSM and AHA cardiovascular standards (Tanaka & Karvonen). Individuals with cardiovascular conditions or taking heart medications (e.g., beta-blockers) should consult a physician for customized clinical target zones.
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