Does the AI calorie counter work for restaurant food?

Yes. Common chains (Chipotle, Chick-fil-A, In-N-Out, Starbucks, Subway, McDonald's, Taco Bell, Dunkin') are usually exact because the AI recognizes the menu item by name and visual cues. Local restaurants depend on visual similarity to known dishes.

How does the AI calorie counter handle portion sizes?

It estimates portion size from the photo using plate scale and the visual volume of each food. If the estimate looks off, a one-tap slider lets you adjust. The AI updates the calorie and macro totals in real time.

Is the AI calorie counter free?

Yes. The web version is genuinely free, with a generous free tier and no signup required to try it. The iOS app has a paid upgrade for power features.

What's the difference between an AI calorie counter and a regular calorie counter app?

A regular calorie counter app is a manual food database. You search, pick, and guess portions. An AI calorie counter does identification and portion estimation for you from a photo. Less typing, fewer wrong matches.

How it works±8% vs RD

How the AI
calorie counterworks.

Snap a photo of your plate. The AI identifies the food, estimates the portion, and returns calories and macros in 2 seconds. No database search, no barcode scan, no weighing. Try it on the right, free, no signup.

Photo, voice, or text input
Within 8% of a registered dietitian on average
USDA FoodData Central for the numbers
3 free tries with no account

Try the AI · live

Try it now. No signup.

Type any meal or upload a photo. Calories and macros in ~2 seconds. We do not store your input.

today

0 / 2,000 kcal

We don't sell data and the demo doesn't require an account. Use it every day if you want.

The pipeline

Photo in, calories out. Two seconds.

01 · Detect

Detect

A vision model identifies the foods on the plate. "Grilled chicken, white rice, broccoli."

02 · Estimate portion

Estimate portion

Plate scale, utensil cues, and visual volume become grams per food. The hardest step.

03 · Look up nutrition

Look up nutrition

Grams × USDA FoodData Central values. Plain arithmetic, not a guess.

The category

What is an
AI calorie counter?

A calorie counter that uses computer vision and a language model instead of a manual food database. You give it an image. It returns a structured estimate: foods detected, portion size, calories, protein, carbs, fat.

The traditional calorie tracker model is a database lookup. You search “chicken sandwich,” you tap one of 14 variants, you guess the portion. The AI calorie counter model is one step: photo in, numbers out.

Voice and text work too. “I had a chicken sandwich and a small fries” is enough.

The numbers

Where the
numbers come from.

Calorie values come from public nutrition databases, not from the AI guessing numbers.

The AI's job is identification and portion estimation. The actual kcal-per-gram values are deterministic lookups from sources like USDA FoodData Central and Open Food Facts.

This matters for trust. The math behind a 540 kcal estimate isn't a black box. It is: detected food (chicken sandwich, ~250g) × kcal/g (database value, ~2.2) = ~550 kcal.

When to use it

When the AI calorie counter is the right tool.

Use it for

· Restaurant meals where you don't know exact portions
· Home meals you cook by eye, not by scale
· Snacks and small meals where logging friction is the reason you skip
· Fast logging on the go

Use a scale for

· Precision phases of a cut, where 50 kcal matters
· Foods with packaging you can scan
· Meal prep where you've already weighed the ingredients

Most people are better off with the AI calorie counter for the first six months and a manual scale for the last 5% if they ever need it.

Get the most accurate read

Snap smarter, not harder.

The AI does the heavy lifting, but a few habits make every estimate sharper. Here are the six that matter most.

01
Angle
Hold the phone at about 45 degrees
A slight tilt instead of a straight-down shot lets the AI see the height of the food, not just its outline, so it can judge volume on bowls, stacked sandwiches, and piled rice. For a flat plate where nothing is stacked, a clean top-down shot works just as well.
02
Framing
Leave nothing hidden
Photograph the meal before you start eating, with the whole plate in frame and items not overlapping. Food tucked under a bun, buried in a bowl, or stacked behind something else cannot be measured. Spread the components out a little if you can.
03
Weight
Put it on the scale and shoot the readout
Set the plate or bowl on a kitchen scale and include the number in the photo. The AI reads the grams off the display and uses the exact weight instead of estimating volume from pixels. This is the single biggest accuracy upgrade for anything you portion at home.
04
Detail
Say what the photo cannot show
Add a line of text for anything invisible: cooked in two tablespoons of olive oil, low-fat milk, no dressing, restaurant portion. Oils, butter, sauces, and the sugar in your coffee rarely show up in a picture and can quietly add 100 to 400 calories.
05
Scale
Add a size reference
No scale handy? Put a familiar object in the shot, a fork, a spoon, a coin, or a credit card, and the AI uses its known size to scale the portion. Your hand resting next to the plate works in a pinch too.
06
Detail
Name the restaurant or brand
For chain food, type the place: Chipotle chicken bowl, Starbucks grande latte, a Big Mac. The AI pulls the exact published nutrition for the named item instead of guessing from the picture, which makes branded meals close to exact.

See all 10 tricks, with the why

AI calorie counter · FAQ

Questions, answered.

Yes. The full AI calorie counter runs in any browser on Mac, Windows, Chromebook, or Linux. There's also an iOS app, but the browser version is what most users start with.