Education Calculators
GPA calculators, test score curves, grade predictors, study hours, and academic tools.
Arithmetic Mean Calculator
Calculate the arithmetic mean, median, sum, count, variance, and standard deviation for any dataset with step-by-step steps.
ASQ Calculator
Calculate Ages & Stages Questionnaires (ASQ-3) screening age adjusted for premature birth (<37 weeks) and score Autism Spectrum Quotient (AQ).
Audiobook Speed
Calculate how much time you save listening to audiobooks and podcasts at 1.25x, 1.5x, 1.75x, or 2.0x playback speed.
Average Calculator
Compute the arithmetic mean, median, mode, sum, count, and range for any set of numbers.
Best Scientific Calculator
Advanced online scientific calculator. Trigonometric functions (sin, cos, tan), natural and common logarithms, powers, roots, factorials, and memory.
Career Numerology Calculator
Align your career and vocational path with your numerology blueprint. Discover your ideal industries, leadership style, and growth strategy.
Circle Calculator
Calculate circle area, circumference, diameter, radius, arc length, and sector area with step-by-step geometric derivations.
Common Logarithm Calculator (log₁₀)
Calculate common base-10 logarithms (log₁₀ x) with characteristic, mantissa, and scientific notation connections.
Compound Interest Calculator with Monthly Deposits
Calculate investment growth over time with compound interest, regular monthly deposits, custom compounding schedules, and visual breakdowns.
Cone Calculator
Calculate right circular cone volume, total surface area, lateral (conical) surface area, slant height, and base area with step-by-step steps.
Cosine Calculator (cos)
Calculate the cosine of any angle in degrees or radians. Shows unit circle coordinates, exact values for special angles, and step-by-step steps.
Cotangent Calculator (cot)
Calculate the cotangent of any angle in degrees or radians. Identifies undefined points, exact values for special angles, and reciprocal trig.
Cube Calculator
Calculate cube volume, total surface area, lateral surface area, space diagonal, and inradius from side length with step-by-step steps.
Cube Calculator (x³)
Calculate the cube of any positive or negative number (x³ = x × x × x) with scientific notation and step-by-step arithmetic.
Cube Density Calculator
Calculate the density of cubic objects from side length and mass, with material identification and unit conversions.
Cube Root Calculator
Calculate the principal real cube root of positive and negative numbers. Identifies perfect cubes, nearest integer roots, and complex conjugate roots.
Cuboid Calculator
Calculate cuboid (rectangular prism) volume, total surface area, lateral area, and space diagonal from length, width, and height.
Cylinder Calculator
Calculate right circular cylinder volume, total surface area, lateral (curved) surface area, and base area from radius and height.
Day of the Week
Find out what day of the week any past or future date falls on, with day-of-year numbers and historical facts.
Density Calculator
Calculate density (ρ = m/V), mass, or volume across metric and imperial units with instant multi-unit conversions.
Equation Solver
Solve linear equations (ax+b=0), quadratic equations (ax²+bx+c=0 with discriminant Δ and complex roots), and 2x2 systems with step-by-step solutions.
Expression Number Calculator
Calculate your Expression (Destiny) Number using the Pythagorean alphabet system on your full birth name. Reveal your natural talents and vocation.
Grade Calculator
Calculate weighted semester grades, GPA equivalents, and determine the exact score needed on the final exam to achieve your target letter grade.
Hexagon Calculator
Calculate regular hexagon area, perimeter, apothem, long diagonal, short diagonal, and circumradius with step-by-step steps.
Life Path Number Calculator
Calculate your numerology Life Path Number instantly from your birth date. Uncover your core archetype, destiny, master numbers, and strengths.
Linear Equation Calculator
Solve linear algebraic equations of the form ax + b = c with full step-by-step mathematical deduction and solution classification.
Logarithm Calculator
Calculate logarithms with any arbitrary positive base (log_b x) using the change of base formula with step-by-step mathematical steps.
Natural Logarithm Calculator (ln)
Calculate the natural logarithm (ln x = log_e x) with base e ≈ 2.718281828 with step-by-step calculus and exponential properties.
Nth Power Calculator
Calculate any base raised to the power of n (x^n) for positive, negative, and fractional exponents with step-by-step exponent laws.
Nth Root Calculator
Calculate the nth root of any number (ⁿ√x). Supports even and odd roots, real roots, radical expressions, and step-by-step solutions.
Parallelogram Calculator
Calculate parallelogram area, perimeter, base, height, and side lengths with step-by-step geometric formulas.
Partial Fraction Decomposition Calculator
Decompose rational functions P(x)/Q(x) into partial fractions with linear and repeated roots using Heaviside’s cover-up method for calculus integration.
Pentagon Calculator
Calculate regular pentagon area, perimeter, apothem, diagonals, and interior angles from side length with step-by-step math.
Percentage Calculator
Quickly calculate percentages, find what percentage one number is of another, and compute percent changes.
Permutations and Combinations Calculator
Calculate combinations nCr and permutations nPr with or without repetition, factorial expansions, and subset ordering.
Population Density Calculator
Calculate demographic population density per square mile and square kilometer, and available land area per inhabitant.
Prism Calculator
Calculate volume, lateral surface area, total surface area, and base parameters for triangular, rectangular, and hexagonal prisms.
Probability Calculator
Calculate the probability of single events, union of events, intersection, conditional probability P(A|B), and complements.
Pyramid Calculator
Calculate pyramid volume, total surface area, lateral area, and slant heights for square and rectangular pyramids with step-by-step steps.
Pythagorean Theorem Calculator
Solve a² + b² = c² for missing hypotenuse or leg with step-by-step radical simplification and exact decimal solutions.
Quadratic Equation Calculator
Solve quadratic equations ax² + bx + c = 0 using the quadratic formula. Computes discriminant Δ, real and complex conjugate roots, vertex, and axis of symmetry.
Rectangle Calculator
Calculate rectangle area, perimeter, diagonal, and aspect ratio from length and width with complete mathematical steps.
Regular Polygon Calculator
Calculate regular n-sided polygon area, perimeter, apothem, circumradius, interior angles, and exterior angles with step-by-step steps.
Reverse Percentage Calculator
Find the original number before a percentage increase or decrease was applied with reverse arithmetic equations.
Rhombus Calculator
Calculate rhombus area, perimeter, side length, diagonals, altitude, and inradius with step-by-step geometric solutions.
Right-Angled Triangle Calculator
Solve right triangles with hypotenuse, legs, area, perimeter, altitude, and acute angles using trigonometry and the Pythagorean theorem.
Roman Numeral Date
Convert any calendar date into Roman numerals for tattoos, wedding engravings, rings, and monuments.
Sine Calculator (sin)
Calculate the sine of any angle in degrees or radians. Shows unit circle coordinates, exact values for special angles, and step-by-step steps.
Sphere Calculator
Calculate sphere volume, surface area, diameter, and great circle circumference from radius with step-by-step mathematical deduction.
Square Calculator
Calculate square area, perimeter, diagonal, inradius, and circumradius from side length with step-by-step formulas.
Square Calculator (x²)
Calculate the square of any positive or negative number (x² = x × x) with scientific notation and step-by-step arithmetic.
Square Root Calculator
Calculate the square root of positive and negative numbers (√x). Provides radical simplification, perfect square check, and imaginary roots.
Student T Value Calculator
Calculate Student t critical values (t*) and p-values for one-tailed and two-tailed tests from degrees of freedom and significance level alpha.
System of Linear Equations Calculator
Solve simultaneous 2x2 and 3x3 systems of linear equations using Cramer’s Rule and matrix determinants with step-by-step work.
Tangent Calculator (tan)
Calculate the tangent of any angle in degrees or radians. Identifies vertical asymptotes, exact values for special angles, and ratios.
Trapezium Calculator
Calculate trapezium (trapezoid) area, perimeter, mid-segment (median), bases, and height with step-by-step mathematical steps.
Triangle Calculator
Calculate triangle area using Heron’s formula or base and height, perimeter, semi-perimeter, inradius, and classification.
Twin Flame Birth Chart Calculator
Calculate astrological zodiac compatibility, elemental alchemy (Fire, Earth, Air, Water), and shared spiritual mission for twin flames.
Water Density Calculator
Calculate pure freshwater and ocean seawater density based on temperature (-5°C to 100°C) and salinity (0 to 40 PSU).
Weighted Average Calculator
Calculate weighted arithmetic mean, sum of products, total weights, and percentage distribution with customizable data pairs.
Word Counter
Free real-time word and character counter. Count words, characters with/without spaces, sentences, paragraphs, and estimate silent reading and speaking time.
Words to Minutes
Convert word count or speech text into speaking time and silent reading duration for presentations, speeches, and video scripts.
Attitude Number Calculator
Calculate your Attitude Number (Sun / Achievement Number) from your birth month and day to discover your natural social impression and life outlook.
Hebrew Birthday
Convert your Gregorian birthdate to the Hebrew lunisolar calendar date, Hebrew year (AM), and Bar/Bat Mitzvah milestone.
Leap Year Calculator
Check if any year is a leap year, explore next and past leap years, and understand the Gregorian 400-year rule.
Unix Epoch Time
Live ticking Unix epoch clock with countdown to the Year 2038 32-bit overflow problem (Y2K38).
Frequently Asked Questions about Education Calculators
Are the calculators in this category free to use?
Yes. All education calculators on Calculat.dev are 100% free with no account registration or limits.
Are my calculation inputs saved on a database?
No. Every calculation executes client-side directly in your browser. No personal or numeric inputs are recorded or transmitted to any server.
Explore Other Categories
Math Calculators
Solve arithmetic, percentages, averages, algebra, geometry, and advanced mathematics problems.
Finance Calculators
Calculate loans, mortgages, compound interest, investments, savings, and retirement planning.
Health Calculators
Monitor your body mass index (BMI), calories, ideal weight, body fat, and wellness metrics.
Date & Time Calculators
Calculate exact age, days between dates, time durations, work days, and countdowns.