arbazex

Steps To Calories Calculator — Development skill for Claude Code

Development community

Calculate calories burned walking using a peer-reviewed biomechanics formula (Weyand et al., 2010, J Exp Biol) — no APIs, no fitness tracker needed.

How to install Steps To Calories Calculator

This entry records only its repository, not the path inside it, so there is no exact command to give. Open arbazex/steps-to-calories-calculator and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Steps To Calories Calculator does

Calculate calories burned walking using a peer-reviewed biomechanics formula (Weyand et al., 2010, J Exp Biol) — no APIs, no fitness tracker needed. Compatible with Claude, OpenClaw/ClawHub, and Hermes agents via the agentskills.io standard.

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README

Steps To Calories Calculator — Steps-to-Calories AI Skill Backed by Peer-Reviewed Research

**Find out exactly how many calories your walk burned — calculated from a real biomechanics study, not a generic guess.**

An open-standard [agentskills.io](https://agentskills.io/specification) skill that turns any compatible AI agent into a walking-calorie calculator. It asks for body weight and step count, then computes net calories burned walking using the metabolic-cost-per-stride relationship established in a controlled treadmill study published in the _Journal of Experimental Biology_.

100% self-contained. No API keys, no fitness-tracker integration, no external services — just weight, steps, and one formula.

Compatible with

Claude (Claude Code, Claude apps, Claude Skills)
OpenClaw / ClawHub
Hermes Agent (Nous Research)
Any other agent supporting the agentskills.io open standard

What it does

Asks for body weight (kg or lb, auto-converts).
Asks for step count (a walk, or a daily total).
Optionally checks pace/terrain to flag when the estimate is less reliable (steep inclines, loaded backpacks, non-walking gaits).
Computes: calories_kcal = 2.74 × weight_kg × (steps ÷ 2) ÷ 4184.
Shows the full calculation so the result is auditable, and states the ~9% margin of error the source study reports — no false precision.

The science

Formula is derived from:

Weyand, P. G., Smith, B. R., Puyau, M. R., & Butte, N. F. (2010). _The mass-specific energy cost of human walking is set by stature._ Journal of Experimental Biology, 213(23), 3972–3979. DOI: [10.1242/jeb.048199](https://doi.org/10.1242/jeb.048199)

The study measured, via indirect calorimetry, that humans spanning a 6-fold range in body mass and ages 5–32 expend an essentially constant **2.74 J per kg of body mass per stride** when walking at a normal, self-selected pace on level ground. A stride = 2 steps, so the formula div