Responsible Gambling

What this site is

Blackjack Calculator is a free educational tool for learning basic strategy, house edge, and payout math. It does not accept bets, does not process payments, and does not facilitate real-money wagering of any kind. Nothing on this site is gambling — it's arithmetic.

Age requirement

Gambling-related content on this site is intended for adults only: 21+ in the United States, 18+ in the United Kingdom and most other jurisdictions. If you are under the legal gambling age in your location, please do not use this site.

If gambling stops being fun

Basic strategy and house-edge math reduce how much you're expected to lose over time — they don't change the fact that the house always keeps a long-run edge, and no strategy guarantees winning. If gambling is causing harm to you or someone you know, free, confidential help is available:

• United States — National Council on Problem Gambling: 1-800-522-4700 (call or text, 24/7), ncpgambling.org
• United Kingdom — BeGambleAware and GamCare (National Gambling Helpline: 0808 8020 133, free and confidential)
• International — Gamblers Anonymous has meetings and resources in many countries.