TrainCalc
Accurate, free fitness calculators built by a dev.
Hey everyone 👋
I’m Alex, a developer who got tired of using outdated, untrusted fitness sites. So I built my own: TrainCalc — a clean, science-based hub of free fitness calculators.
It covers all the essentials: BMI, TDEE, macros, protein intake, body fat, heart-rate zones, and more — all with clear explanations and zero clutter.
No ads, no pop-ups, no upsells — just accurate tools that help people understand their numbers and train smarter.
I’d love your feedback on:
Which calculators you’d actually use most
What data or integrations you’d want next (wearables, profiles, etc.)
I’m building this solo, sharing updates as I go — and I’d really appreciate any thoughts or feature ideas from the IH community 🙌
💪 Try it here → https://traincalc.com
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