Developer builds lightweight treadmill calorie calculator using Vanilla JS and ACSM equations

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A developer built TreadmillCalc, a treadmill calorie calculator, out of frustration with slow, ad-heavy online tools. The project was coded entirely in Vanilla JavaScript, deliberately avoiding heavy frameworks to keep the tool fast and responsive. It uses official American College of Sports Medicine metabolic equations to estimate calorie burn based on user weight, speed, incline, and duration. The core function converts speed and gradient inputs into a VO2-based calculation, then derives kilocalories per minute. The result is a lightweight, scientifically grounded fitness tool built without reliance on third-party libraries.

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