Fun

Most used

• First Date Overthinking CalculatorA joke scoring sheet for the night after a first date. Eight questions, one percentage, and made-up points that admit they are made up.

All, A–Z

• Cat Age CalculatorYour cat's age in human years, using the feline life-stage curve rather than the times-seven myth.
• Coin Flip Streak CalculatorThe chance of a fair coin landing on the same named side n times in a row — P(n) = (1/2)ⁿ, with the 1-in-X odds.
• Dog Age CalculatorYour dog's age in human years, size-aware: bigger breeds age faster after their second birthday.
• Dog Due Date CalculatorCount the days to your dog's whelping window. From the first mating it opens on day 58 and closes on day 72; from ovulation it is far tighter.
• ERA CalculatorEarned run average from earned runs and innings pitched, with .1 and .2 read as thirds of an inning, not tenths.
• Fantasy Football Points CalculatorScore any NFL stat line under ESPN's standard settings, in standard, half-PPR or full PPR. Yardage counts fractionally, as ESPN scores it.
• Pizza Party CalculatorHow many whole pizzas to order for a group, from the headcount, the slices each guest eats and the slices per pizza.
• Slugging Percentage CalculatorSlugging percentage from a hitting line: total bases divided by at-bats, with each hit weighted by the bases it earns.
• Smoking Cost CalculatorWhat a cigarette habit costs in a year, from cigarettes per day, pack size and the price you pay — in your own currency.
• Steps to Km CalculatorTurn a step count into kilometres using your own stride length — switch the units to read the same walk in miles.
• Typing Speed CalculatorTyping speed in words per minute from the words you typed and the minutes it took — gross WPM, no error penalty.
• Win Percentage CalculatorWin percentage from wins, losses and ties — with the three conventions leagues use to count a drawn game.