Inverse Tangent (Arctan) Calculator Opposite Side Length: Adjacent Side Length: Calculate Angle Result: Angle (Radians): – Angle (Degrees): – function calculateInverseTangent() { var oppositeSide = parseFloat(document.getElementById(‘oppositeSide’).value); var adjacentSide = parseFloat(document.getElementById(‘adjacentSide’).value); var angleRadiansElement = document.getElementById(‘angleRadians’); var angleDegreesElement = document.getElementById(‘angleDegrees’); var resultDiv…

Retirement Savings Calculator Current Age (Years): Desired Retirement Age (Years): Expected Life Expectancy (Years): Current Retirement Savings: Desired Annual Retirement Income (Today’s Dollars): Expected Annual Inflation Rate (%): Expected Annual Investment Return (Pre-Retirement, %): Expected Annual Investment Return (During Retirement,…

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Free Work Value Calculator Your Standard Hourly Rate (per hour): Hours Spent on Free Work: Direct Costs Incurred (e.g., materials, software): Calculate Value Understanding the Value of Your Free Work Many individuals and professionals contribute their time, skills, and resources…

Real Estate Cap Rate Calculator Annual Gross Rental Income ($): Annual Operating Expenses ($): Property Purchase Price ($): Calculate Cap Rate Results: Net Operating Income (NOI): Capitalization Rate (Cap Rate): function calculateCapRate() { var grossRentalIncomeInput = document.getElementById(“grossRentalIncome”); var annualOperatingExpensesInput =…

Small Solar System Calculator Use this calculator to estimate the key components needed for a small off-grid solar power system, such as for an RV, cabin, or small shed. Daily Energy Consumption (Wh/day): Total Watt-hours consumed by all your devices…

2 lbs/Week Weight Loss Calorie Calculator Current Weight (lbs): Height: Age (years): Gender: Male Female Activity Level: Sedentary (little to no exercise) Lightly active (light exercise/sports 1-3 days/week) Moderately active (moderate exercise/sports 3-5 days/week) Very active (hard exercise/sports 6-7 days…

Distance, Rate, Time Word Problem Solver Use this calculator to solve word problems involving distance, rate (speed), and time. Enter any two values, and the calculator will determine the third missing value. Remember to keep your units consistent (e.g., miles…

String Combination Calculator This calculator allows you to combine two strings, with the second string repeating a specified number of times. It’s a simple tool for text manipulation, useful for generating patterns, test data, or understanding basic string operations. First…

Cost of Living Index Comparison Calculator Your Current Annual Salary ($): Current City’s Cost of Living Index (e.g., 100 for national average): Target City’s Cost of Living Index (e.g., 130 for expensive, 80 for cheaper): Calculate Equivalent Salary Calculation Results:…