Matrix Inverse Calculator (3×3) Enter the elements of your 3×3 matrix below to calculate its inverse. Calculate Inverse function calculateMatrixInverse() { var a11 = parseFloat(document.getElementById(‘a11’).value); var a12 = parseFloat(document.getElementById(‘a12’).value); var a13 = parseFloat(document.getElementById(‘a13’).value); var a21 = parseFloat(document.getElementById(‘a21’).value); var a22 =…

Triangle Height Calculator Enter the lengths of the three sides of a triangle to calculate its area and the heights relative to each side. Side A Length: Side B Length: Side C Length: Calculate Heights function calculateTriangleHeights() { var sideA…

Chi-Square Test Calculator Enter the observed and expected frequencies for each category. Click “Add Category” to include more categories in your analysis. Observed Frequency (Category 1): Expected Frequency (Category 1): Remove Observed Frequency (Category 2): Expected Frequency (Category 2): Remove…

Y-Intercept Calculator Enter the coordinates of two points to calculate the slope and the y-intercept of the line passing through them. First Point X-coordinate (x1): First Point Y-coordinate (y1): Second Point X-coordinate (x2): Second Point Y-coordinate (y2): Calculate Y-Intercept .y-intercept-calculator-container…

Expected Value Calculator Use this calculator to determine the expected value of an event with multiple possible outcomes. Enter the value for each outcome and its corresponding probability. Outcome 1 Outcome Value: Probability (as decimal, e.g., 0.25 for 25%): Outcome…

P-value Calculator (Z-score) Observed Z-score: Test Type: One-tailed (Left) One-tailed (Right) Two-tailed Calculate P-value Result: // Constants for erf approximation (Abramowitz and Stegun, 7.1.26) var P_ERF = 0.3275911; var A1_ERF = 0.254829592; var A2_ERF = -0.284496736; var A3_ERF = 1.421413741;…

Square Footage Calculator Use this calculator to quickly determine the square footage of a room or area. Simply enter the length and width in feet, and the calculator will provide the total square footage. Length (feet): Width (feet): Calculate Square…

Room Square Footage Calculator Room Length (feet): Room Width (feet): Calculate Square Footage function calculateSquareFootage() { var roomLength = parseFloat(document.getElementById(‘roomLength’).value); var roomWidth = parseFloat(document.getElementById(‘roomWidth’).value); var resultDiv = document.getElementById(‘squareFootageResult’); if (isNaN(roomLength) || isNaN(roomWidth) || roomLength <= 0 || roomWidth <= 0)…

Superheat Calculator Use this calculator to determine the superheat of your refrigeration or air conditioning system. Superheat is a critical measurement for ensuring proper system operation and compressor longevity. Suction Line Temperature (°F): Suction Line Saturation Temperature (°F): Calculate Superheat…

Volume of a Rectangle Calculator Enter the dimensions of your rectangle below to calculate its volume. Length: Width: Height: Calculate Volume function calculateVolume() { var length = parseFloat(document.getElementById(‘lengthInput’).value); var width = parseFloat(document.getElementById(‘widthInput’).value); var height = parseFloat(document.getElementById(‘heightInput’).value); var resultDiv = document.getElementById(‘volumeResult’);…