Airplane Hours Calculator Use this calculator to sum up the total flight time from multiple segments or operational periods. This is useful for pilot logbooks, maintenance tracking, or simply understanding total aircraft utilization. Segment 1 Duration: hours minutes Segment 2…

Cost of Living Index Comparison Calculator Use this calculator to estimate the equivalent salary needed to maintain your current standard of living when moving from one city to another, based on their respective Cost of Living Indices. Current City Cost…

Subnetting Calculator IP Address: CIDR Prefix Length (e.g., 24): Calculate Subnet Enter IP address and CIDR prefix to see subnet details. function isValidIp(ipStr) { var parts = ipStr.split(‘.’); if (parts.length !== 4) return false; for (var i = 0; i…

Snowball Debt Repayment Calculator Use this calculator to plan your debt repayment using the snowball method. Enter details for each of your debts, and an extra amount you can pay each month. The calculator will sort your debts by balance…

Tangent Calculator The tangent function, often abbreviated as tan, is one of the fundamental trigonometric functions. In a right-angled triangle, the tangent of an angle is defined as the ratio of the length of the side opposite the angle to…

American Airlines AAdvantage Miles Calculator Estimate the redeemable AAdvantage miles you’ll earn on your next American Airlines flight based on flight distance, fare class, and your elite status. Flight Distance (miles): Fare Class Earning: Deep Discount Economy (50%) Discount Economy…

Euler’s Method Differential Equation Solver This calculator uses Euler’s Method to numerically approximate the solution to the first-order ordinary differential equation: dy/dx = x + y Given an initial condition (x₀, y₀), it estimates the value of y at a…

Arbitrage Betting Calculator Use this calculator to identify arbitrage opportunities in sports betting. Enter the decimal odds from two different bookmakers for opposing outcomes of an event, along with your total desired stake, to see if a guaranteed profit can…

Credit Card APR Payoff Calculator Current Credit Card Balance ($): Annual Percentage Rate (%): Monthly Payment ($): Calculate Payoff function calculateAPR() { var balance = parseFloat(document.getElementById(“creditCardBalance”).value); var annualAPR = parseFloat(document.getElementById(“annualAPR”).value); var monthlyPayment = parseFloat(document.getElementById(“monthlyPayment”).value); var resultDiv = document.getElementById(“result”); resultDiv.innerHTML =…

Cost of Living Index Comparison Calculator Use this calculator to estimate the equivalent salary needed to maintain your current standard of living when moving from one city to another, based on their respective Cost of Living Indices. Current City Cost…