Sports Tools & Quizzes
Calculators and interactive quizzes that put the rules into practice. Use them during a live match, to settle an argument with friends, or to learn the rules before you play or officiate.
Net Run Rate (NRR) Calculator
Work out a team’s NRR across a tournament using the ICC method, including all-out innings.
Open toolRun Rate & Required Run Rate Calculator
Current run rate, runs and balls needed, required rate and projected score for any chase.
Open toolIs It LBW? Checker & Quiz
Answer the umpire’s Law 36 questions to get a decision, then try eight practice calls.
Open toolOffside Quiz
Ten illustrated offside situations, each explained with what IFAB Law 11 says.
Open toolWhich tool do I need?
Each tool answers one question fans ask during a match. If you want to know where a team stands in a tournament table, use the Net Run Rate calculator. If you are watching a chase and want to know how fast the batting side has to score, use the Run Rate and Required Run Rate calculator.
The two quizzes are for the decisions that cause the most arguments. The LBW checker walks you through the same questions an umpire asks under Law 36 of the Laws of Cricket. The Offside quiz shows ten common situations and explains each call using Law 11 of the IFAB Laws of the Game.
How the calculators work
Run rate is runs scored divided by overs faced. Cricket writes overs as overs and balls, so 18.3 overs means 18 overs and 3 balls, not 18.3 overs in decimal. Both calculators convert overs to balls first, which is the step most people get wrong when they work it out by hand.
Net run rate follows the ICC method. A team that is bowled out is treated as if it faced its full quota of overs, so being all out early is punished in the table. When a match is shortened by rain, the revised overs are used. Every result shows the working, so you can check it against a points table on a broadcaster or league website.
How the quizzes are built
Each quiz question is based on the wording of the official law, not on opinion. After every answer you see why it is right or wrong and which part of the law decides it. That makes the quizzes useful for new fans, players, and anyone learning to umpire or referee at grassroots level.
The quizzes run entirely in your browser and do not send your answers anywhere, so you can try them as many times as you like.
Cricket rules explained · The LBW rule in detail · The offside rule in detail · Net run rate explained · DRS explained · VAR explained · Sports games
