CasinoCalcs is a free collection of gambling calculators: bet settlers, casino bonus maths, poker odds, table game charts and a few random tools. You type in your numbers, the page does the arithmetic, and you see the answer straight away. No account, no download, no email address.
Why the site exists
Most gambling maths isn’t hard, it’s just fiddly. Working out what a £1 each way Lucky 15 returns when two horses win and one places takes ten minutes with a pen. Working out whether a 35x wagering bonus is worth taking takes longer, and most people never do it. They just click accept.
That gap is what we fill. A calculator can’t make a bet good, but it can tell you, in about two seconds, how much a bonus really costs to clear or what your acca pays if the third leg goes wrong.
What’s on here
Betting is the biggest section, because that’s where people get stuck most. There’s a calculator for pretty much every bet a UK bookie will take, from a plain single to a Super Heinz, plus each way, Rule 4, odds conversion and arbitrage.
The casino side is mostly about bonuses: wagering requirements, free spins value, RTP. Poker has hand odds, pot odds and ICM for when a tournament gets close to the money. Then there’s blackjack and roulette, lotto odds, bingo tools, and a handful of things like a dice roller that we built because people kept searching for them.
There’s also a responsible gambling section with spend and time checks. It isn’t there to tick a box. If you want to know what a month of £20 sessions actually adds up to, it’ll tell you.
What we’re not
We don’t take bets, run a casino or hold anyone’s money. There are no tips here and no predictions. A calculator shows what the numbers say. What you do with that is your call.
Some pages may link to gambling sites, and we may earn a commission if you sign up through those links. That never changes a calculator’s result, and we’ll always say when a link is a paid one.
Who runs it
CasinoCalcs is run by Josh Miller. If something looks wrong, or there’s a calculator you’d like to see, the contact page is the place to tell us.
Gambling is for adults only. If it stops being fun, the responsible gambling page has tools and free support lines.