All Tools · Page 20
Find a tool by name, topic, or what you need to calculate.
Browse by use
A tool can belong to several categories. All tools lists each calculator once.
Chemistry
Computing
Construction
Geometry
Polygon Area from Coordinates
Learning & Education · Construction & DIY · Design & DrawingCalculate area, perimeter and area centroid from 3–50 ordered vertices of a simple polygon. Inspect an equal-scale outline and a table of edges.
Open calculator ↗Cone Frustum Calculator
Learning & Education · Construction & DIY · Design & DrawingFind a right circular cone frustum’s volume, slant height and surface areas from two radii and vertical height. Mix input units and compare volume equivalents.
Open calculator ↗Box Packing Calculator
Shopping · Construction & DIY · Design & DrawingCompare all six orientations for identical rectangular items in a rectangular container. Find the best uniform grid, counts along each axis and volume utilization.
Open calculator ↗Regular Polygon Calculator
Learning & Education · Construction & DIY · Design & DrawingFind a regular polygon’s area, perimeter, apothem, circumradius and angles from side count and length. Choose global length units and compare dimensions.
Open calculator ↗Coordinate Distance Calculator
Learning & Education · Construction & DIY · Design & DrawingEnter two Cartesian points to find their distance, midpoint, coordinate changes and direction. Choose a shared input unit and compare output lengths.
Open calculator ↗Mathematics
Direct and Inverse Proportion Calculator
Learning & Education · Middle SchoolUse one known x,y pair to find the constant of direct or inverse proportion, calculate another y and compare a value table with the graph.
Open calculator ↗Square Root Simplifier
Learning & Education · Middle SchoolSimplify a real square root into a√b, with prime-factor pairs and a decimal check. Distinguish the principal square root from both solutions of x²=n.
Open calculator ↗Expansion and Factorization Calculator
Learning & Education · Middle SchoolExpand (ax+b)(cx+d) using four products, or factor a monic quadratic x²+Bx+C over the integers. See how the middle terms combine.
Open calculator ↗Two-Draw Probability Calculator
Learning & Education · Middle SchoolCalculate a two-draw color event with or without replacement. Follow a probability tree, multiply along each path and add the matching outcomes.
Open calculator ↗Ratio and Proportion Calculator
Learning & Education · Design & DrawingSimplify a whole-number ratio and divide a total into proportional shares, or solve the missing value in a:b = c:x. Inspect the shares and calculation steps.
Open calculator ↗Exponential Growth and Decay Calculator
Learning & Education · Science & Lab · Time & PlanningApply an entered constant growth or decay rate to an initial quantity. Compare periodic and continuous models, view a time curve and find doubling time or half-life.
Open calculator ↗2×2 Matrix Calculator
Learning & Education · IT & Communication · Science & LabAdd, subtract or multiply two 2×2 matrices, or find the inverse of A. Enter each cell separately and follow row-by-column arithmetic in the result table.
Open calculator ↗Trigonometry Calculator
Learning & Education · Science & Lab · Design & DrawingEnter an angle in degrees or radians to find six trigonometric functions. Explore a unit-circle diagram and sine/cosine graphs.
Open calculator ↗Logarithm Calculator
Learning & Education · Science & Lab · IT & CommunicationCalculate a real logarithm in any valid base, or raise that base to an exponent. Compare natural, binary and decimal logarithms and inspect the inverse relationship.
Open calculator ↗Prime Factorization Calculator
Learning & Education · IT & CommunicationFactor a positive integer up to one trillion. See prime powers, primality, divisor count, the exact divisor sum and a sorted divisor table.
Open calculator ↗Complex Number Calculator
Learning & Education · Science & LabAdd, subtract, multiply or divide two complex numbers. Enter real and imaginary parts separately, then inspect magnitude, argument and an equal-scale complex-plane diagram.
Open calculator ↗Mechanics
Physics
Heat Energy Calculator
Learning & Education · Science & Lab · Cooking & KitchenCalculate signed heat transfer from mass, specific heat and initial/final temperatures. Compare energy units and see a heating or cooling energy chart.
Open calculator ↗Series and Parallel Capacitor Calculator
Learning & Education · Science & LabCalculate the equivalent capacitance of 2–20 capacitors in series or parallel. Enter supply voltage for ideal charge, per-capacitor voltage and stored energy.
Open calculator ↗Statistics
Normal Distribution Calculator
Learning & Education · Science & LabCalculate a normal probability below, above or between entered values. See standardized z scores, a probability breakdown and a bell curve with the selected region.
Open calculator ↗Linear Regression Calculator
Learning & Education · Science & LabFit y=a+bx to 2–100 entered coordinate pairs. Inspect the regression equation, correlation, R², predictions, residuals and a scatter plot.
Open calculator ↗