Macro Calculator
Protein, carbs and fat targets from your daily calories.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Macro Calculator
Follow these steps — everything happens instantly in your browser.
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Step 1. Enter your daily calorie target.
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Step 2. Pick a macro split (balanced, low-carb, keto or high-protein).
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Step 3. Enter meals per day for a per-meal breakdown.
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Step 4. Read protein, carbs and fat in grams plus a visual split bar.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about macro calculator.
Calorie Calculator
Daily calorie needs using Mifflin-St Jeor — for loss, maintenance and gain.
Daily Protein Calculator
Protein target in g/kg/day by activity, age and goal.
Calorie Deficit Calculator
Plan a safe daily deficit to hit your weight loss goal on time.
Exercise Calorie Burn
Calories burned for 15+ activities using METs.