🎓 Grades & Exams
🧮 Academic Calculators
Percentage, GPA, attendance, marks, and exam-planning calculators built for everyday student life.
34 free tools · no sign-up
📈Percentage IncreaseThree modes with textbook working: % increase between numbers, apply a raise, or find the original before the hike.Open tool →📉Percentage DecreaseDiscount maths with textbook working: % drop between numbers, apply a discount, or reveal the true original price.Open tool →💯Marks PercentageSingle exam, full marksheet, or % → marks — with subject bars, CBSE grades, best/weakest analysis & PDF/Excel reports.Open tool →🔄Percentage to GPAPercentage → 4.0 GPA done honestly: exact US band table, plus division-based estimates for Indian percentages.Open tool →🎯Semester GPASGPA from letter grades & credits on 10-pt or 4-pt scales — with the biggest-lever tip, subject bars & PDF/Excel.Open tool →🎓CGPACredit-weighted CGPA by semester or subject on 10-point & 4-point scales — chart, % conversion, target planner, PDF & Excel.Open tool →🔮Grade PredictorSlide your expected performance and watch your predicted grade — with a full grade ladder of what each band still demands.Open tool →🚀GPA Improvement PlannerThe exact per-semester GPA your CGPA target demands — trajectory chart, max-achievable ceiling & honest target board.Open tool →✅Attendance PercentageAttendance % with a safe-to-skip count, recovery plan, end-of-term forecast, bunk planner & PDF/Excel reports.Open tool →🏃Classes to AttendThe exact consecutive classes needed to recover any attendance target — with a climb chart, time estimate & skip penalty.Open tool →😎Safe LeaveYour honest bunk budget: how many classes you can miss at any rule, a per-leave drop chart & weekly ration plan.Open tool →⚠️Attendance Shortage PredictorPlay the term forward: end-of-term attendance for your real habit, the minimum habit to stay safe & scenario table.Open tool →📝Internal MarksComponent-wise internal marks with real scaling (32/40 → 8/10), pending-component planning, build-up bar & PDF report.Open tool →🏁Final MarksCombine internal & external at any ratio (30:70…) — or plan the exam score each target needs, with the min-external rule checked.Open tool →⚖️Weighted MarksWeighted course score with pending-component planning — points banked, best/worst finals, target planner & PDF/Excel.Open tool →📌Passing MarksCorrectly-rounded pass marks for any exam & rule — score check with margin, separate theory/practical passes & PDF card.Open tool →⏳Exam Days RemainingLive multi-exam countdown (saved locally) with an 80/20 study-revision split, chapters-per-day pace & urgency colours.Open tool →⏰Study Hours NeededFind how many study hours per day you need to finish your syllabus in time.Open tool →📚Chapters Per DayFind how many chapters you need to cover per day before your exam.Open tool →🗓️Revision PlannerGenerate a day-by-day revision schedule across all your subjects.Open tool →🎂Age CalculatorExact age for any cut-off date — with birthday countdown, born-on weekday, zodiac, life milestones & totals down to seconds.Open tool →📅Date CalculatorDays between dates with a weekday/weekend split, or add & subtract days/weeks/months/years — leap-year exact.Open tool →⏱️Time CalculatorStack durations with per-row add/subtract, hours between clock times (overnight-aware) & unit conversion — base-60 done right.Open tool →📐Unit Converter8 categories incl. Indian land units (acre/hectare/bigha), speed, data & time — with an all-units-at-once table & swap.Open tool →🔬Scientific CalculatorA free online scientific calculator with trigonometric, log, and power functions.Open tool →🎓CGPA to PercentageCBSE ×9.5, ×10, VTU or your own formula — exact percentage with band & division, full table & PDF conversion card.Open tool →📊Percentage to CGPAExact percentage → CGPA under CBSE ÷9.5, ÷10, VTU or a custom rule — with reference table & PDF conversion card.Open tool →🌎CGPA to US GPABand-based CGPA → US GPA estimate the way evaluators think — with the misleading linear formula debunked side-by-side.Open tool →🇩🇪German GradeConvert any percentage, GPA, or CGPA to the German 1–6 grade with the official Bavarian formula — full working, band table & reverse mode.Open tool →🇪🇺ECTS GradesPercentage → ECTS A–F with the official percentile definitions, typical mark bands & a full Europe-wide equivalence table.Open tool →🇬🇧GCSE GradesThe 9–1 vs A*–G conversion table, strong vs standard pass explained & an illustrative mark → grade estimator.Open tool →🇫🇷French Grade /20Convert notes /20 to percentage, mentions (Très bien → Passable) & honest US GPA equivalents — both directions.Open tool →🏅CBSE Best of 5Best-of-five with the English-compulsory rule — see the dropped subject, your gain vs all subjects & a PDF report.Open tool →🎯Marks NeededExact marks needed in your finals for any target — effort verdict, what-if slider, milestone board & PDF plan.Open tool →
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