Free, science-based fitness calculators for BMI, TDEE, macros, and body fat—plan nutrition and training smarter.

Product screenshot

Product screenshot

Overview

What is TrainCalc?

TrainCalc Introduction

TrainCalc is a free, science-based platform that turns complex fitness math into clear, practical answers. Instantly calculate BMI, BMR, TDEE, body-fat %, macros, protein intake, water needs, heart-rate zones, and more—no ads, no clutter.

TrainCalc Core Features

  • Accurate calculators for BMI, TDEE, macros, body-fat %, protein & water intake
  • Science-backed formulas with plain-language explanations
  • Clean, fast UI that works great on mobile and desktop
  • Actionable outputs for diet planning and workout targets
  • Guides & resources that teach the “why” behind the numbers

TrainCalc Usage

  1. Open a calculator (e.g., TDEE).
  2. Enter age, sex, height, weight, and activity level.
  3. Get calories and macro targets instantly.
  4. Read the short guide to apply results to real meals & training.

Great for beginners, athletes, and coaches who want quick, trustworthy numbers.

TrainCalc Price

  • Free — all calculators and guides are available without ads or paywalls.

TrainCalc FAQs

Is TrainCalc accurate?
Yes. We use validated formulas (e.g., Mifflin-St Jeor for TDEE, standard BMI/Body-fat equations) and explain how to interpret results.

Do I need an account?
No—everything is free to use with no login.

Is there an app?
The site is fully mobile-friendly; a PWA/app is on the roadmap.

TrainCalc Contact

Platforms and languages

TrainCalc Availability

Platforms

Web

Languages

English

TrainCalc Alternatives

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