# BettorEdge > BettorEdge is a peer-to-peer sports betting marketplace where you bet against other people instead of the house. Bettors set and take each other's lines at market-fair prices with no built-in vig, so winners keep more of every bet. It is an established marketplace with $100M+ matched between 35,000+ bettors, plus social competitions (pick'ems, squares, head-to-head) and the BE 4 Good give-back program. ## Free betting tools - [Betting Odds Converter](https://www.bettoredge.com/betting-odds-converter): convert American, decimal, and fractional odds to a win percentage (implied probability), and back. - [Parlay Calculator](https://www.bettoredge.com/parlay-calculator): combined parlay payout, profit, and the true probability that every leg hits. - [No-Vig Calculator](https://www.bettoredge.com/novig-calculator): strip the juice out of a line to find its market-fair price. - [Implied Probability Calculator](https://www.bettoredge.com/implied-probability-calculator): turn any odds into the win percentage they imply. ## Betting explainers - [Point Spreads](https://www.bettoredge.com/point-spreads): what any point spread means, what it covers, and what it pays at -110 versus +100, explained per spread number. - [American Odds](https://www.bettoredge.com/american-odds): what positive and negative American odds mean and pay, explained per number. ## Community and peer-to-peer betting - [Peer-to-Peer Betting Explained](https://www.bettoredge.com/post/peer-to-peer-betting): what peer-to-peer betting and exchanges are, and how betting against people instead of the house removes the vig. - [Best Sports Betting Subreddits](https://www.bettoredge.com/post/reddit-sports-betting-subreddits-for-bettors): the best subreddits for sports betting, how to vet picks and avoid scams, and where to actually place a peer-to-peer bet. - [Best Forums for Peer-to-Peer Betting](https://www.bettoredge.com/post/best-forums-for-peer-to-peer-betting-discussions): where bettors discuss peer-to-peer betting (Reddit, Discord, exchanges) and where you can place a matched bet. - [What Reddit Says About No-Vig Betting](https://www.bettoredge.com/post/what-reddit-says-about-no-vig-betting): a recap of the sports betting subreddits on no-vig betting and exchanges, and where US bettors can bet no-vig. ## Company - [How BettorEdge Works](https://www.bettoredge.com/features): peer-to-peer betting with no sportsbook on the other side of your bet. - [BE 4 Good](https://www.bettoredge.com/be-4-good): the program that gives back a share of betting activity. - [About BettorEdge](https://www.bettoredge.com/about): what BettorEdge is and who it is for. - [Compare BettorEdge](https://www.bettoredge.com/compare): how BettorEdge compares to sportsbooks and other betting exchanges.