Educational calculators help students, teachers, and applicants with grades and scores — exam and GPA marks, test-score conversions, and study planning. Popular tools include the Marks Percentage Calculator, IELTS Score Calculator, MELD Score Calculator, and grade-point tools used around the world.
Pick the tool that matches your exam or grading system below, or open the Trending tab to see what's in demand this week. Everything is free and works on any device.
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Grade Percentage Needed CalculatorFind the average score you need on the remaining work to hit your target final grade, based on your current grade and weight completed.
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Marks Needed to Reach Target Percentage CalculatorFind out how many more marks you need to hit your target percentage. Enter your target %, total marks, and current score to get the answer instantly.
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Percentage of Questions Correct CalculatorCalculate your test score percentage from the number of questions correct out of the total. Instant grade percentage with correct and incorrect counts.
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Test Score Percentage CalculatorCalculate your test score percentage instantly. Enter correct answers and total questions to see your grade percentage, correct and incorrect counts.
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K/D Ratio CalculatorCalculate your K/D (kill/death) ratio and KDA from kills, deaths, and assists. Free gaming stats calculator for FPS and MOBA players.
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Win Rate CalculatorCalculate your win rate percentage from games won and lost. Free win rate calculator for gaming, esports, sports and competitive stats.
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Divide Fractions CalculatorDivide two fractions instantly. Enter a/b ÷ c/d to get the simplified fraction and decimal answer using the keep-change-flip method.
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Add and Subtract Fractions CalculatorAdd or subtract two fractions instantly. Get the simplified result, the unsimplified fraction, and the decimal value with step-by-step formula.
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Golf Course Handicap CalculatorConvert your Handicap Index to a Course Handicap using slope rating, course rating and par. Free slope-based golf handicap calculator.
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Cricket Partnership Run Rate CalculatorFree cricket run rate calculator. Enter runs scored and overs bowled to get runs per over (RPO) instantly, plus a projected 50-over score.
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FOIL CalculatorMultiply two binomials using the FOIL method. Enter coefficients a, b, c, d to expand (ax+b)(cx+d) into a quadratic, with First, Outer, Inner, Last steps.
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Double Digit Multiplication CalculatorMultiply any two 2-digit numbers instantly. See the product plus the hundreds, tens, and units breakdown using the (10a+b)(10c+d) expansion.
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SAT to ACT Score Conversion CalculatorConvert your SAT total score (400–1600) into an equivalent ACT composite score (1–36) using the official 2018 SAT/ACT concordance tables.
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ACFT Points Needed to Pass CalculatorFind how many ACFT points you still need to hit your target total and the average score required per remaining event. Quick US Army fitness planner.
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School Starting Age CalculatorFind out how old a child will be on the school cutoff date and whether they meet the minimum starting age. Enter birth date, cutoff date, and required age.
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IELTS to TOEFL Score Conversion CalculatorConvert an IELTS band score to an equivalent TOEFL iBT total using the official ETS concordance table. Enter your IELTS band to get the TOEFL range.
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Social Media Engagement Rate CalculatorCalculate your social media engagement rate from likes, comments, shares and followers. Free engagement rate formula tool for Instagram, TikTok, X and more.
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Points-Based Grade CalculatorCalculate your class grade percentage and letter grade from total points earned divided by total points possible. Fast, accurate points-based grading.
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Percentage to CGPA (10-Point) CalculatorConvert your percentage to CGPA on a 10-point scale using the standard CBSE formula (CGPA = percentage / 9.5). Fast, free and accurate.
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Points-Based Grade CalculatorCalculate your course grade with the total points system. Enter points earned and points possible to get your percentage and letter grade instantly.
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Grade Needed on Final for an A CalculatorFind out the exact grade you need on your final exam to reach an A or any target grade, based on your current grade and the final's weight.
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PERC Rule CalculatorPERC Rule Calculator checks all 8 criteria (age, heart rate, SpO2, hemoptysis, estrogen, VTE, surgery, leg swelling) to rule out pulmonary embolism.
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Wells Score for Pulmonary Embolism CalculatorCalculate the Wells Score for pulmonary embolism (PE). Add weighted clinical criteria to estimate PE probability with three-tier and two-tier risk.
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Wells Score for DVT CalculatorCalculate the Wells Score for deep vein thrombosis (DVT) by summing 10 weighted clinical criteria to stratify low, moderate, or high pretest probability.
Frequently asked questions
What can I calculate with these educational tools?
Grades and percentages, GPA and weighted marks, standardized-test scores (such as IELTS), pass marks, and study or attendance planning.
Do the tools match my country's grading system?
Grading scales differ by country and institution. Choose the calculator built for your system where available, and always check the result against your school's official rules.
Are they free to use?
Yes — free, no sign-up, and they work on any device.
How accurate are the score results?
They apply the published formula for each grading scheme, but official results can include rounding or weighting rules specific to your institution — treat these as estimates.
Which educational calculators are most popular?
The list is ordered by usage, most popular first; the Trending, Recently added, and Last updated tabs show what's new and rising.
