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USDA-Verified · Vision AI Powered

Free Nutrients Calculator — Know exactly what you're eating, instantly.

Snap a photo of any meal. Our AI Nutrients Calculator identifies every ingredient and cross-references 400,000+ USDA-verified foods — giving you calories, macros, and micronutrients in under 3 seconds.

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400K+
Foods verified
3 sec
Analysis time
100%
Free to use
🔍 AI Analysis SCANNING
🍗🥦🍚
🍗 Chicken
🥦 Broccoli
🍚 Rice
⚡ Vision AI
Total Calories
Grilled chicken bowl
0 kcal
Protein
38g
Carbs
52g
Fats
12g
Fiber
8g
Vit C 42mg Iron 3.2mg Calcium 88mg Vit D 2.1mcg Potassium 620mg Zinc 4.1mg
Health Score
78/100
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How it works

How our nutrients calculator works

No manual food logging. Our AI nutrients calculator replaces the food diary with your phone camera — three steps to complete nutrition data.

01
📷

Snap or upload your meal

Take a clear photo of any meal — home-cooked, restaurant, takeaway or snack. Natural lighting gives the most accurate recognition.

Takes 2 seconds
02
🤖

AI identifies every ingredient

Vision AI distinguishes grilled chicken from breaded schnitzel, estimates portion sizes, and detects hidden oils and sauces — even in mixed dishes.

Sub-3 second analysis
03
🏛️

USDA-verified nutrition results

Results cross-referenced with the USDA FoodData Central database — 400,000+ government-verified foods. Calories, 4 macros, 30+ micronutrients, glycemic index and health score.

400K+ verified foods

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Complete macronutrient breakdown

Your nutrients calculator shows more than calories

Most calorie trackers stop at the number. Our nutrients calculator gives you the full macronutrient and micronutrient picture — because real health optimization starts with protein, carbs, fat, fiber and beyond.

🥩

Protein — the building block

Track grams precisely for muscle repair, satiety, and recovery.

🍚

Carbohydrates — the fuel

Total carbs, net carbs, and fiber broken out — critical for keto and diabetic tracking.

🥑

Fats — the regulator

Distinguish healthy fats from hidden saturated fats — vital for hormonal and heart health.

Sample: Chicken Bowl (487 kcal)
487 kcal
Protein
38g · 31%
Carbohydrates
52g · 43%
Fats
12g · 22%
Fiber
8g · 4%
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Our AI scanner estimates portions from photos. Add an Etekcity kitchen scale and your data becomes truly precise.

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Who it's for

Built for every nutrition goal

Whether you're cutting, bulking, managing a condition, or just curious — our tool meets you where you are.

⚖️

Weight loss warriors

Research shows people under-report calorie intake by up to 50%. Scanning your food exposes hidden calories in sauces, oils, and dressings your eyes miss.

Start scanning →
💪

Keto & low-carb dieters

One mistake can kick you out of ketosis. Our tool calculates net carbs precisely — critical for Keto, Paleo, and Atkins lifestyles.

Check your carbs →
📊

Data-driven biohackers

Using a CGM or sleep wearable? You need high-quality food data to match. Our tool provides the precision your devices demand.

Get precise data →
🏋️

Athletes & bodybuilders

Precise protein tracking for muscle repair and recovery. Know exactly how much protein is in every meal.

Track macros →
🩺

Diabetes management

See how food will spike your blood sugar before you eat it. Our glucose integration tools help you make smarter choices daily.

View glucose tools →
🌱

Plant-based eaters

Combining plant proteins for complete amino acid profiles is tricky. Our tool tells you exactly what you're getting — and what's missing.

Read the guide →
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🏅Our top-rated tracking products - curated & affiliate-supported
1
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Etekcity Smart Food Scale
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Best overall - 0.1g precision - 30M+ sold
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2
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Continuous Glucose Monitor (CGM)
★★★★☆
Best for diabetes & weight loss
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Explore our tools

More ways to track smarter

Beyond the AI scanner, we've curated the best tools and trackers to support your complete health journey.

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Food nutrition database

Browse USDA-verified nutrition data for thousands of foods.

Explore database →
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Best food scales

For precision macros, pair our AI scanner with a reliable food scale. See our curated picks under $30.

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Glucose monitors

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FAQ

Nutrients calculator — common questions

How accurate is your nutrients calculator? ⌄
Our nutrients calculator uses dual-layer verification: Vision AI identifies food visually, then cross-references with the USDA FoodData Central database (400,000+ verified foods). This delivers government-grade accuracy — not the crowd-sourced guesswork of typical nutrition apps.
How does the AI nutrients calculator work? ⌄
Upload or snap a photo of your meal. Our AI nutrients calculator identifies every ingredient and portion size, then instantly returns calories, protein, carbohydrates, fat, fiber, sugar, sodium and 30+ micronutrients including vitamins and minerals. The full analysis takes under 3 seconds.
Is this nutrients calculator completely free? ⌄
Yes — NutrientsCalculator.com is 100% free with no app download required. Create a free account to save up to 10 nutrition reports, track your health score over time and view your BMI dashboard. Upgrade to Premium for unlimited report storage.
Can I use the nutrients calculator for restaurant meals? ⌄
Absolutely. Restaurant food is where our nutrients calculator shines most — since you cannot weigh the ingredients yourself, a photo analysis is the most accurate method available. The AI estimates portion sizes and accounts for cooking oils, sauces and garnishes.
Do I need to sign up to use the nutrients calculator? ⌄
No — use the nutrients calculator instantly as a guest with no email or sign-up required. Create a free account to save your results, track patterns over time, and see your personalized BMI and health score dashboard.
What nutrients does it calculate? ⌄
Our nutrients calculator returns: total calories, protein (g), carbohydrates (g), net carbs, dietary fiber, sugar, total fat, saturated fat, sodium, plus micronutrients including Vitamin A, Vitamin C, Vitamin D, Vitamin B12, Iron, Calcium, Potassium, Magnesium, Zinc and more — plus an overall health score from 0–100.
USDA-verified nutrition database

Browse our food nutrition database

Detailed calorie counts, macros and micronutrients for thousands of foods — verified against USDA FoodData Central.

View all foods →
Browse all foods in our database →
Free account — 30 seconds to set up

Turn every meal scan into lasting progress

Scanning without saving is like working out without tracking — you miss the pattern. Create a free account and every photo you take builds your personal nutrition story.

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Track every meal automatically Results save the moment you scan. No typing, no logging.
🏆
See your health score improve Watch your average nutrition score climb week by week.
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BMI dashboard with your data Personalized to your weight, height, age and goal.
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Full meal history, always available Search, review and learn from every meal you've ever scanned.
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🆓 Free plan includes 10 saved reports. Upgrade anytime for unlimited.

The only nutrients calculator you need

Stop guessing. Join thousands who've replaced manual calorie counting with a 3-second AI photo scan.

The most accurate free nutrients calculator online

NutrientsCalculator.com is a free AI-powered nutrients calculator that analyzes the nutritional content of any meal from a single photo. Unlike traditional calorie counters and macro trackers that require manual food logging, our nutrients calculator uses Vision AI to automatically identify every ingredient in your meal and calculate precise nutrition data in seconds.

What does our nutrients calculator measure?

Our nutrients calculator provides a complete nutritional breakdown including: total calories, protein, carbohydrates (total and net carbs), dietary fiber, sugar, total fat, saturated fat, sodium, and more than 30 micronutrients including Vitamin A, Vitamin C, Vitamin D, Vitamin B12, Iron, Calcium, Potassium, Magnesium and Zinc. Every result is cross-referenced with the USDA FoodData Central database — the gold standard for nutritional accuracy.

Who is this nutrients calculator for?

Our free nutrients calculator is designed for anyone who wants to understand what they eat without the tedium of manual food logging. It's especially useful for weight loss (accurate calorie tracking), muscle building (monitoring protein intake), diabetes management (carbohydrate and glycemic index tracking), keto diets (net carb calculation), and anyone following a USDA MyPlate or general balanced nutrition plan.

Browse food nutrition database → Best food scales for macro tracking → Create free account to save results →
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Etekcity Food Scale
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