Macro Calculator
Turn your daily calories into protein, carb and fat gram targets for any diet style.
Don't know your calories? Use the Calorie (TDEE) Calculator first.
DISCLAIMER: Macro targets are general guidelines — individual needs vary with training, goals and health conditions. Not medical or nutrition advice.
What Is the Macro Calculator?
The Macro Calculator is a free online tool that lets you turn your daily calories into protein, carb and fat gram targets for any diet style. It runs entirely in your browser — your text and files never leave your device, so it's fast and private. There's nothing to install and no sign-up required.
How It Works
Using the Macro Calculator takes seconds. Paste or type your content into the input area (or upload a file where supported), adjust any options to fit your needs, and the result updates instantly. You can then copy the output to your clipboard, download it, or clear everything and start again. Because all processing happens locally with JavaScript, it works offline once the page has loaded.
When to Use It
Reach for the Macro Calculator whenever you need a quick, reliable way to turn your daily calories into protein, carb and fat gram targets for any diet style. It's popular with writers, students, developers, marketers and anyone who works with calculators day to day. Bookmark it alongside the other Calculators in our toolbox so it's always one click away.
Frequently Asked Questions
- Is the Macro Calculator free to use?
- Yes. Every tool on the site is completely free, with no account, login or download required.
- Is my data private?
- Absolutely. The Macro Calculator processes everything locally in your browser. Your text and files are never uploaded to a server, so your data stays on your device.
- Does it work on mobile?
- Yes. The Macro Calculator is fully responsive and works on phones, tablets and desktops in any modern browser.
- Do I need to install anything?
- No installation is needed — it runs in the browser. We also offer an optional browser extension and mobile app for quick access to popular conversions.
Last reviewed: 2026-06-27