All Tools · Page 12
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Chemistry
Computing
Construction
Paint Calculator
Construction & DIY · Design & Drawing · ShoppingEstimate paint for a rectangular room from wall dimensions, excluded wall area, coats and entered coverage. Include the ceiling optionally and round to whole cans.
Open calculator ↗Tile Calculator
Construction & DIY · Design & Drawing · Shopping · Learning & EducationEstimate tile and pack quantities from a rectangular room and tile size. Compare an area budget with two simple grid orientations and add your own allowance.
Open calculator ↗Geometry
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 ↗Arc Length and Sector Area Calculator
Learning & Education · Construction & DIY · Design & DrawingCalculate a circular arc, sector area and chord from radius and central angle. Mix angle and length units and view a sector diagram plus unit equivalents.
Open calculator ↗Mathematics
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 ↗Vector Calculator
Learning & Education · Science & Lab · Design & DrawingEnter two three-component vectors to calculate their sum, difference, dot product, cross product, magnitudes and angle, with an XY-projection diagram.
Open calculator ↗Work Rate Calculator
Time & Planning · Learning & Education · Science & LabCalculate how long two constant-rate workers, machines or pipes take together. Include an opposing drain and an already-completed fraction, with a progress graph.
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 ↗Series and Parallel Resistor Calculator
Learning & Education · Science & LabFind the equivalent resistance of 2–20 ideal resistors in series or parallel. Enter a DC voltage to calculate current, voltage drop and power for every resistor.
Open calculator ↗Kinetic Energy Calculator
Learning & Education · Science & Lab · Automotive · Sports & FitnessFind translational kinetic energy, mass or speed from the other two values. Choose explicit units, compare energy equivalents and see how energy changes with speed.
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 ↗Time
Time Calculator
Time & Planning · Learning & Education · Sports & Fitness · TravelAdd or subtract up to 100 durations. Use signed clock durations or decimal hours, minutes or seconds, then compare the exact total and running sums.
Open calculator ↗Date Difference Calculator
Time & Planning · Learning & Education · TravelCount calendar days between two Gregorian dates, optionally including both endpoints. View the direction, week breakdown and Monday–Friday versus weekend counts.
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