Math practice · reimagined
Logarithm
Turn Logarithm into a fight you actually want to win. Every problem is an attack — solve it faster than your opponent and you land the hit.
Ages 4–99+ · no download · plays in your browser · 23 languages
How it works
Logarithm
Pick a fighter, choose Logarithm, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.
A logarithm asks the reverse of a power: "what exponent do I need?"
log₂(8) asks "2 to the what makes 8?" Since 2 × 2 × 2 = 8, that's 3 — so log₂(8) = 3. And log₁₀(1000) = 3 because 10³ = 1000 (just count the zeros).
Find the power that builds the number, and type that exponent.
— Quick answers —
Logarithm: the short FAQ
- Is Logarithm free to play?
- Yes. Logarithm is free to play right in your browser — the whole curriculum, no download, no signup. Paid plans later unlock the full fighter roster, every stage and saved progress.
- Who is Logarithm for?
- Anyone from 4 to 99+. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.
- Do I need to download anything to play Logarithm?
- Nope. Logarithm runs in any browser, on a laptop, tablet or phone.
- Can Logarithm be used in the classroom?
- Absolutely. Teachers run Logarithm with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.