Carb Calculator
Calculate how many grams of carbohydrates you need per day from your daily calories and carb percentage — free online. — free, fast and private.
How to use Carb Calculator
- Enter your daily calorie target.
- Enter the percentage of calories you want from carbohydrates (50% is a common default).
- Click Calculate Carbs to see your daily grams.
Note: this tool runs in your browser. Nothing is uploaded.
Disclaimer: this tool gives an estimate for general information only. It is not medical advice. Talk to a doctor or other qualified health professional before making any health decision.
Frequently Asked Questions
How many carbs should I eat per day?
General guidance is 45–65% of daily calories from carbohydrates. For a 2,000 kcal diet at 50%, that is about 250 g per day. Your ideal amount depends on activity, health and goals, so check with a dietitian.
Is this tool free to use?
Yes, it is 100% free with no sign-up. Your data stays in your browser.
Is my data uploaded or stored?
No. This tool runs entirely in your browser — nothing you enter is uploaded to a server.
Can I use it on my phone?
Yes, it is fully mobile-friendly and works in any modern browser on phone, tablet or computer.