Shot: 1/8
Score: 0
Best: --

Estimation Sniper

No calculator, no search: break a big question into small steps you can guess, multiply, and take your shot.

How to play

Read the question. Split it into numbers you can guess (people, hours, metres…).
Set your estimate by typing, sliding or with ×10 ÷10.
Points come from how many powers of ten you are off: ×10 off is the same miss high or low.
Land inside the target band for +50 and a harder level with a tighter band.

8 shots · reference values are rounded, well-known figures

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Estimation Sniper

Eight Fermi questions: seconds in a year, litres in an Olympic pool, heartbeats in a life, piano tuners in a city. Break each one into steps you can guess, take your shot, then see the reference value and the reasoning.

8 shots
Estimation

How to play

Break it down. Split the question into numbers you can guess: hours, people, metres.
Take your shot. Type a number (3000, 2.5 million, 4e9), slide, or use ×10 and ÷10.
Log-distance score. Points fall with how many powers of ten you are off, high or low the same.
Hit the band. Inside the target band: +50 and a harder level with a tighter band.

Quick tips

Split it up. Turn one huge unknown into three or four small ones you can picture.
Round boldly. Use 100,000 seconds a day or 30 million seconds a year: close enough wins here.

3 more tips in the Estimation Sniper guide →