Educational

  • Reading Level Calculator
    Calculate the Flesch Reading Ease score and Flesch-Kincaid Grade Level of your text from word, sentence, and syllable counts.
  • Study Time Calculator
    Convert college credit hours into recommended weekly study hours using the 2–3 hours per credit rule. See daily and full-semester study time too.
  • Logarithm Calculator
    Free logarithm calculator. Compute log base 10, natural log (ln), log base 2, or any custom base using log_b(x) = ln(x)/ln(b). Instant results.
  • Final Exam Weight Calculator
    Find out how much your final exam affects your course grade. Enter current grade, exam weight, and expected score to see your final percentage.
  • TOEFL iBT Score Calculator
    Calculate your total TOEFL iBT score by adding Reading, Listening, Speaking, and Writing (0–30 each) for a max of 120, with a CEFR level estimate.
  • Percentage Increase / Decrease Calculator
    Calculate the percentage increase or decrease between two values instantly. Enter an original and new value to get the percent change and absolute difference.
  • Slope and Y-Intercept Calculator
    Find the slope (m) and y-intercept (b) of a line from two points. Get the slope-intercept equation y = mx + b instantly with steps.
  • Reading Time Calculator
    Estimate how long it takes to read text. Enter word count and reading speed (WPM) to get reading time in minutes and seconds.
  • Percentile Rank Calculator
    Calculate the percentile rank of a score within a data set. Enter your numbers and a value to find what percentage falls below it. Free and instant.
  • Permutations and Combinations Calculator
    Calculate permutations (nPr) and combinations (nCr) instantly. Enter n and r to find how many ways to arrange or choose items, with formulas and examples.
  • Odds to Probability Calculator
    Convert odds (a:b) into a probability and percentage instantly. Supports odds in favor and odds against using P = a/(a+b). Free and accurate.
  • Factors Calculator
    Find all factors (divisors) of any whole number instantly. See the full list, count, sum of factors, and whether the number is prime.
  • GCF and LCM Calculator
    Find the greatest common factor (GCF) and least common multiple (LCM) of two numbers instantly using Euclid's algorithm. Free, fast, and accurate.
  • Letter Grade to GPA Calculator
    Convert any letter grade (A+, A, B-, C, F) to its GPA point value on the standard unweighted 4.0 scale instantly and accurately.
  • Classes Needed for Attendance Calculator
    Find how many classes in a row you must attend to reach a required attendance percentage. Enter classes attended, total held, and your target %.
  • CGPA Calculator (10-Point Scale)
    Free CGPA calculator on the 10-point scale. Enter grade points and credits per subject to get your credit-weighted CGPA and equivalent percentage instantly.
  • CGPA to Percentage Calculator
    Convert CGPA to percentage instantly using the standard CBSE formula (Percentage = CGPA × 9.5). Adjustable multiplier for other boards.
  • Marks Percentage Calculator
    Calculate your exam marks percentage instantly. Enter marks obtained and total marks to get your percentage, marks lost, and score breakdown.
  • Pass Percentage Calculator
    Calculate the pass percentage of a class or exam by entering the number of students passed and the total students. Instant pass and fail rates.
  • GPA to Percentage Calculator
    Convert GPA or CGPA to a percentage instantly. Use the standard 4.0 scale formula or the Indian CGPA × 9.5 method for accurate results.
  • Percentage to GPA Calculator (4.0 Scale)
    Convert a percentage to GPA on the 4.0 scale instantly. Enter your percentage to get your GPA and an approximate letter grade.
  • Order of Operations Calculator
    Evaluate any math expression using PEMDAS/BODMAS order of operations — parentheses, exponents, multiplication, division, addition, subtraction.
  • BMI Calculator
    Free BMI calculator: enter weight in kg and height in cm to instantly find your Body Mass Index and weight category (underweight, normal, overweight, obese).
  • Hardy-Weinberg Equilibrium Calculator
    Calculate Hardy-Weinberg genotype frequencies (p², 2pq, q²) from one allele frequency. Find p, q and population genotype distribution instantly.

Categories