Education & Student Calculators
Tools for students and teachers: GPA and exam-score planning, marks and percentage conversion, plus probability, statistics and other classroom calculators.
16 free tools · no sign-up, no adsArea Calculator
Compute areas for rectangles, circles, triangles, and more.
Math CalculatorBase Converter
Convert numbers between binary, octal, decimal, hex.
Math CalculatorBinary to Decimal
Convert base-2 binary values to base-10 and vice-versa.
Math CalculatorFinal Exam Score & GPA
Find the exam score and GPA needed to hit your target grade.
Education CalculatorFraction to Decimal
Convert and simplify mathematical fractions to decimals.
Math CalculatorGPA Calculator
Calculate your Grade Point Average from course grades and credits.
Education CalculatorLCM & HCF
Least common multiples and highest common factors.
Math CalculatorMarks Percentage
Calculate exam marks percentage and grades.
Math CalculatorPermutation & Combination
Compute nPr and nCr with exact large-number math.
Math CalculatorProbability Calculator
Solve probabilities of single and multiple events.
Math CalculatorPythagorean Theorem
Solve right triangle sides using the geometric theorem.
Math CalculatorQuadratic Equation
Solve quadratic equations with steps and discriminant.
Math CalculatorRandom Number Generator
Generate random numbers in any range, with options.
Math CalculatorRoman Numerals
Convert numbers to Roman numerals and back.
Math CalculatorStatistics Calculator
Mean, median, mode, and standard deviation in one click.
Math CalculatorVolume Calculator
Calculate volumes and areas for standard 3D shapes.
Math CalculatorExplore Other Categories
Climate & Sustainability Calculators
Carbon, energy, water & green living.
15 calculatorsUnit & Conversion Calculators
Units, currencies, time zones & measurements.
11 calculatorsDeveloper & Web Tools
Encoding, hashing, JSON, regex & web utilities.
25 calculatorsEducation & Student Calculators
Grades, GPA, percentage & study helpers.
16 calculatorsFinancial Calculators
Loans, investments, tax, salary & money planning.
37 calculatorsHealth & Fitness Calculators
BMI, calories, fitness, pregnancy & medication.
20 calculatorsMath Calculators
Numbers, algebra, geometry & everyday arithmetic.
26 calculators