Guess the Calories
Which has more calories: a croissant or a donut? Peanut butter or chocolate? Test your intuition and see how many you can get right!
Challenge Yourself
3 lives, unlimited rounds. Chase high scores and streaks.
Learn While Playing
Discover surprising calorie facts about everyday foods.
Daily Challenge
Same 10 questions for everyone. One life. New set each day.
How It Works
Simple gameplay, endless learning
See Two Foods
You'll see a reference food with its calorie count, and a mystery food.
Make Your Guess
Does the mystery food have more or fewer calories? Tap Higher or Lower.
Learn & Improve
See the answer, learn from surprises, and build your calorie intuition over time.
Surprising Calorie Facts
Think you know which foods pack more calories? These might surprise you.
An avocado has about 160 calories per 100g, while a banana has around 89. Healthy fats add up quickly!
Olive oil has more calories than butter per gram. Both are calorie-dense, but portion size matters most.
Dried fruits can have 3-4x more calories per 100g than fresh versions because the water is removed.
Many nuts have more calories than potato chips. Almonds clock in at about 580 kcal per 100g!
Two Ways to Play
Choose your challenge based on how much time you have.
Why Learn About Calories?
Make smarter food choices. Whether you're trying to lose weight, build muscle, or simply eat more mindfully, understanding which foods are calorie-dense helps you make informed decisions.
Learn through play. Instead of memorizing nutrition labels, CalGuesser builds your intuition through comparison. Over time, you'll develop a natural sense for which foods pack more energy—no obsessing over numbers required.