Free Tools

CS2 Gambling Tools

The maths behind our reviews, as free interactive tools. Everything runs in your browser, no sign-up, nothing you enter is sent anywhere.

Calculator

Bonus Wagering Calculator

The real expected cost of clearing a bonus. Spoiler: a 100% match at 35x wagering is usually worth less than nothing.

In-browser Open tool

Calculator

Case Opening EV Calculator

Paste a case's published drop rates and see its expected value and house edge before you open anything.

In-browser Open tool

Verifier

Provably Fair Verifier

Check a seed commitment and recompute any roll with HMAC-SHA256, entirely in your browser.

In-browser Open tool

Calculator

Rakeback & Lossback Value Calculator

Rakeback and lossback change the real price of playing. See your effective house edge after rewards.

In-browser Open tool

Simulator

Bankroll Survival Simulator

Monte Carlo simulation of your session: bust probability, typical ending bankroll, and what bet sizing really does.

In-browser Open tool

Every tool on this page is open source

The formulas, a command-line version, and the full test suite are on GitHub under the MIT licence. Audit them, fork them, or file an issue if a site uses a different derivation.

View on GitHub