In online poker an odds calculator can help you with all hands in Texas Hold'em Poker make very quick decisions. Online poker plays very fast and sometimes you will not have the time to think about what you should do. Especially if you are meanwhile trying to calculate the odds and probabilities of various cards hitting the board.
Assistance in this case would be coming from one of the Holdem software available on the market. They can calculate the odds of poker hands at light speed, letting you focus on the important part, in other words the poker strategy itself. If you are just starting to play online poker and you have no experience of the game, use one of these Holdem software if you're not sure which hand is stronger in this situation and what are the chances of your hand to win.
But Holdem odds calculators are not just your assistant during the game, with some of them you can also review a particular situation after the game and analyze your actions. You can replay various hands and maybe discover aspects that went to fast for you to notice, such as how a player made a particular play or how a bad beat took place and what was its likelihood.
There are all sorts of holdem odds calculators and online poker aids, so you should do some research before you buy one and start using it on a regular basis. Some are basic, some very advanced. For the basic ones, they will provide odds for one table at most, and just the elementary numbers. On the contrary the most advanced online poker aids use databases with million of hand histories used to create players' profiles.