How Heavy? — guess the weight of everyday objects
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Why play How Heavy?
Test your intuition
Most objects will surprise you. Is a basketball heavier than a soccer ball? By how much?
See how you rank
Every guess is compared with thousands of players. Beat the crowd, climb the percentiles.
Learn something new
Fun facts in every round — from whale hearts to Olympic medals.
How to play
- Look at the object. A new set of 5 appears every day at midnight UTC.
- Slide to your guess. The slider is logarithmic — from 1 gram to 1 ton.
- Lock it in. See the real weight, your score, and how everyone else guessed.
- Share your result. Spoiler-free — challenge your friends to beat you.
Tip: Most objects are heavier than you think.
Guess the weight of (almost) anything
How Heavy? is a daily guessing game about the one measurement nobody has intuition for: weight. Each round shows you a real object — an animal, a gadget, a piece of furniture, or something truly weird — and you estimate what it weighs. The closer you get, the more points you score. Five objects a day, the same for everyone on the planet.
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FAQ
What is How Heavy?
How Heavy? is a free browser game. You see an object, estimate its weight on a slider, and get points for how close you are. Five rounds per game, a new Daily Challenge every day.
How does scoring work?
Scores use relative error, so guessing half the weight is treated exactly like guessing double the weight. A perfect guess is 100 points per round, 500 per game.
Can I use pounds instead of kilograms?
Yes. Toggle between Metric (g, kg, t) and Imperial (oz, lb, tons) at any time — the game converts everything for you.
Does sharing my Daily result spoil the objects?
No. The share text shows only your score, percentile, and streak — never object names, images, or weights.
Do I need an account?
No account, no login, no install. Your streak and progress are saved in your browser.