Free Fitness and Nutrition Tools

Fitness calculators
you can actually trust.

Accurate, free tools to track calories, macros, and body metrics. No ads, no fluff — just results, in seconds.

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Instant Results · No Login · Updated Monthly

Fitness Tools

Tools to measure the work — down to the calorie.

06 entries

01 / Featured

Rucking Calorie Calculator

Calculate exact calories burned rucking based on weight, pack load, distance and pace.

Fitness Free

↗ 02

TDEE Calculator

Find your daily calorie burn plus maintenance, cutting and bulking targets.

Calories Free

↗ 03

One-Rep Max Calculator

Estimate your true 1RM from any set with the Epley, Brzycki and Lander formulas.

Strength Free

↗ 04

Body Fat Calculator

Estimate body fat percentage, fat mass and lean mass with the U.S. Navy method.

Body Comp Free

↗ 05

Water Intake Calculator

Get your personalized daily water target based on weight, exercise and climate.

Hydration Free

↗ 06

Reverse BMI Calculator

Enter your target BMI and height to find your ideal goal weight instantly.

BMI Free

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Restaurant Nutrition Tools (US)

Restaurant menus, decoded in real time.

04 entries

Chipotle Calorie Calculator

Build your Chipotle order and see exact calories, protein, carbs and fat in real time.

Chipotle Macros

↗ 08

Dunkin Calorie Calculator

Track calories in your Dunkin order — drinks, food, and customizations included.

Dunkin Calories

↗ 09

Qdoba Calorie Calculator

Calculate calories and macros for any Qdoba meal — burrito, bowl, tacos and more.

Qdoba Calories

↗ 10

Cava Calorie Calculator

Build your Cava bowl ingredient by ingredient and track your full nutrition breakdown.

Cava Calories

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Our Promise

Built for athletes, not advertisers.

No. 01

Honest math

Every formula is sourced from peer-reviewed sports science — no shortcuts, no estimates dressed up as facts.

No. 02

Zero friction

No login, no email gate, no upsell. Open a tab, get your answer, close the tab. The way the web should work.

No. 03

Quietly refined

Updated monthly with new menus and research. We sweat the details so your numbers stay current and trustworthy.

From the Blog

Latest from the blog.

All posts →

May 16, 2026

Rucking vs Walking Calories Burned: Real Data

How many calories does rucking burn vs walking? See real calorie data by weight and pack load, plus exact MET value…

Read → April 22, 2026

Lowest Calorie Cava Bowl You Can Build (Under 400 Cal)

Build a Cava bowl under 400 calories without losing flavor or protein. Exact ingredient combos, calorie math, and th…

Read → March 10, 2026

Best Chipotle Order for 150g Protein a Day (2026)

Hit 150g of protein a day using Chipotle. Exact meal combos, macro breakdowns, and a two-order strategy that actually…

Read →