• Earned Run Average (ERA) Calculator
    Calculate a pitcher's Earned Run Average (ERA) from earned runs and innings pitched. Supports 9-inning baseball, 7-inning softball and 6-inning Little League.
  • Test Grade Calculator
    Free test grade calculator: enter correct answers and total questions to get your score percentage and letter grade instantly.
  • PTE Score Calculator
    Estimate your PTE Academic overall score from Speaking, Writing, Reading and Listening communicative scores (10–90) plus the CEFR band.
  • Grade Curve Calculator
    Free grade curve calculator. Curve a test score using the flat-add (max − highest) or scaling method and see your new percentage instantly.
  • Final Grade Calculator
    Find out exactly what grade you need on your final exam to reach your target course grade based on your current grade and the final's weight.
  • NFL Passer Rating Calculator
    Calculate NFL quarterback passer rating from completions, attempts, yards, touchdowns and interceptions. Free QB rating tool with capped components.
  • Goalie Save Percentage Calculator
    Calculate a goalie's save percentage (SV%) from shots against and goals allowed. Free hockey & soccer goalie stat calculator with formula.
  • Home Runs Allowed Per 9 Innings (HR/9) Calculator
    Calculate a pitcher's HR/9 — home runs allowed per nine innings. Enter innings pitched (with partial-inning outs) and home runs allowed to get the rate.
  • Duckworth Lewis Calculator
    Calculate the revised cricket target using the Duckworth-Lewis method from Team 1's score and each side's resource percentages. Free DLS target tool.
  • On Base Percentage Calculator
    Calculate baseball On Base Percentage (OBP) from hits, walks, hit by pitch, at bats and sacrifice flies. Free, instant OBP calculator with formula.
  • Fielding Percentage Calculator
    Calculate a baseball or softball fielding percentage (FPCT) from putouts, assists, and errors. Free, instant, with formula and worked example.
  • Rugby Score and League (Bonus) Points Calculator
    Add up rugby union scores from tries, conversions, penalties and drop goals, then compute league points with try and losing bonuses. Free and instant.
  • AP Chemistry Score Calculator
    Estimate your AP Chemistry exam score with our free calculator. Input your multiple-choice and free-response scores to get an instant AP score prediction on the 1-5 scale.
  • Fantasy Cricket Points Calculator
    Estimate Dream11-style fantasy cricket points from runs, wickets, catches and bonuses, with captain/vice-captain multipliers, for T20 scoring.
  • Army ACFT Total Score Calculator (US)
    Add your six US Army ACFT event scores (0–100 each) to get your total out of 600 and see if you pass the 60-point minimum per event.
  • LSAT Score Calculator
    Estimate your LSAT scaled score (120–180) from your raw number of correct answers. Free LSAT practice-test score converter with approximate percentile.
  • Negative Marking Marks Calculator
    Calculate your exam score with negative marking. Enter correct and wrong answers, marks per correct, and penalty per wrong to get your final marks.
  • MCAT Score Calculator
    Add your four MCAT section scores (each 118–132) to get your total score on the 472–528 scale, with an approximate percentile. US AAMC exam.
  • Current Grade Calculator (Grade So Far)
    Calculate your current weighted grade based only on completed work. Enter category scores and weights to see your grade so far in the course.
  • Grade Needed Calculator
    Find the average score you need on your remaining assignments or final exam to reach your target course grade. Free, instant percentage calculator.
  • Minimum Grade to Pass Calculator
    Find the minimum grade you need on your final exam or remaining coursework to pass. Enter your current grade, its weight and the pass threshold.
  • Goalkeeper Goals Against Average (GAA) Calculator
    Calculate a goalkeeper's Goals Against Average (GAA) — goals conceded per full game — for soccer, ice hockey, water polo, lacrosse and field hockey.
  • Braden Scale Calculator
    Calculate the Braden Scale score for pressure ulcer (bedsore) risk by scoring six subscales. Total ranges 6–23; lower scores mean higher risk.
  • SAT Score Calculator
    Enter Math, Reading, and Writing scores to calculate your SAT total and the average per section in seconds for the three-section format.