Lawrence Goh

AI Automation | Founder at Autonex

#97020331 follower 1 following

About

Founder of Autonex Pte. Ltd, a Singapore-based AI automation and transformation company. We help businesses automate smarter and transform faster. Building useful free tools at the intersection of AI and everyday productivity.

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Maker History

Zone 2 Heart Rate CalculatorFind your Zone 2 range using MAF, Karvonen & % Max HR
Apr 2026

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Joined Product HuntApril 17th, 2026

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2mo ago

Zone 2 Heart Rate Calculator - Find your Zone 2 range using MAF, Karvonen & % Max HR

Most Zone 2 calculators use one formula. This runs all three — MAF, Karvonen, and % of Max HR — simultaneously so you see the full picture. Enter your age, resting heart rate, and fitness level. Get your Zone 2 range three ways, a complete 5-zone training table, weekly volume recommendations, and plain-English explanations. Free. No signup. No email. Built for runners, cyclists, and anyone serious about aerobic base training and longevity.