Tools

Free calculators and simulators, each built around one idea a Mochivia lesson teaches. They run in your browser, store nothing and need no account.

• Compound interest calculatorCompound interest is interest earned on interest: each period's growth joins the balance, so the next period grows from a bigger total.
• Bayes' theorem calculatorBayes' theorem turns a test result into the chance it is right, and that chance depends on how common the condition is.
• Prisoner's dilemma simulatorThe prisoner's dilemma is a game where each player scores more by betraying, whatever the other does, yet both score less when both betray.
• Expected value calculatorExpected value is the average result of a choice you could make many times: multiply each outcome by its probability and add them up.
• Opportunity cost calculatorOpportunity cost is the value of the best option you give up when you choose.
• Anchoring effect demoAnchoring is the pull a number you've just seen has on your next estimate, even when you know it's random: you start from it and stop adjusting too soon.