- Maths reviewed by Josh Miller
- Tested by Diana Westfield
A pot limit calculator saves you the mental arithmetic that slows down every pot limit Omaha game. Someone bets £10 into £20. You can raise to £50: call the £10, which makes the pot £40, then raise £40 on top. Put the pot and the bet you face into the free CasinoCalcs calculator above and it gives the biggest legal raise, the chips you push in and the pot it leaves.
How to calculate pot limit Omaha raises
Dealers use a shortcut: three times the bet you face, plus whatever was in the pot before that bet. £10 into £20 is 3 × 10 + 20 = £50. It works because a pot raise is your call plus the pot after your call, and the bet gets counted three times on the way: once in the pot, once as your call, once more as part of the raise.
| Situation | Pot before the bet | Bet you face | Raise to |
|---|---|---|---|
| Flop, one bettor | £20 | £10 | £50 |
| Turn, pot-sized bet | £60 | £60 | £240 |
| Bet and one caller in front | £20 | £10 + £10 call | £60 |
| Preflop, blinds 1/2, first in | £3 | £2 | £7 |
| Preflop, one limper | £5 | £2 | £9 |
A caller already in the pot adds their chips to the pot, which is why the third line comes to £60, not £50.
Blinds and re-raises
From the small blind, your blind is already in, so you only call the difference before raising. With blinds 1/2 and everyone folded to you, that’s 1 to call, a pot of 4, and a raise to 6. The calculator handles this with the “money already in” box. The same box covers being re-raised: if you bet £10 and someone makes it £40, you’ve got £10 in, £30 to call, and the pot counts both bets.
Stacks cap everything. In deep games a few pot raises can get the money in by the turn, which is why a pot-sized re-raise preflop is often all in at 100 big blinds. Open “More options” to add your stack and the calculator stops at all in.
When a pot raise is the wrong size
Being allowed to raise the pot doesn’t mean you should. Half pot gives callers a better price but risks less when you’re wrong, and in Omaha, where so many hands have a draw, the bigger bet is often there to deny equity. The calculator also shows the pot odds a caller gets: facing your full pot raise they need about 33% equity to call. To check what your own hand has, run it through the Omaha odds calculator, and for which hands deserve a raise in the first place see the Omaha starting hands chart. The pot odds calculator turns any bet into the equity you need.
Decide your buy-in before you sit down. BeGambleAware.org has free tools and advice.