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Fuel Burn CalculatorEstimate aircraft fuel burn from hourly burn, flight time, reserve, and taxi fuel.Score 22reserveCash Flow CalculatorCalculate net cash flow from income, expenses, debt service, capital costs, and reserves.Score 12reserveAircraft Range CalculatorEstimate aircraft range from usable fuel, burn rate, true airspeed, and reserve fuel.Score 12reserveBoat Fuel CalculatorEstimate boat fuel required and cost from burn rate, speed, distance, and reserve.Score 12reserveHeart Rate Zone CalculatorCalculate heart rate training zones from age and resting heart rate.Score 4reserveMortgage CalculatorEstimate monthly mortgage payments, total interest, principal, and payoff cost.Score 2BMI CalculatorCalculate body mass index using metric or imperial units and view the standard BMI category.Score 2Compound Interest CalculatorProject future investment value with compounding frequency and recurring contributions.Score 2Fuel Cost CalculatorEstimate advanced trip fuel cost with distance modes, efficiency units, fuel price units, emissions, commute projections, and vehicle comparisons.Score 2Scientific CalculatorUse a keyboard-friendly scientific calculator with trig, logs, powers, constants, and memory.Score 2Percentage CalculatorCalculate percentages, percent change, discounts, increases, and reverse percentages.Score 2Loan CalculatorEstimate loan payments, total interest, payoff totals, and amortized monthly costs.Score 2Force CalculatorCalculate force, mass, or acceleration using Newton's second law.Score 2Ohm's Law CalculatorCalculate voltage, current, resistance, and power from Ohm's law relationships.Score 2Age CalculatorCalculate exact age in years, months, days, total days, and next birthday countdown.Score 2Annual Salary to Hourly CalculatorConvert annual salary into hourly, weekly, biweekly, monthly, and daily pay estimates.Score 2Overtime Pay CalculatorCalculate regular pay, overtime pay, gross pay, and overtime share for a pay period.Score 2Payroll Cost CalculatorEstimate fully loaded payroll cost including gross pay, employer taxes, benefits, and insurance.Score 2PTO Accrual CalculatorCalculate accrued PTO hours, remaining PTO, and estimated payout value.Score 2Employee Turnover Rate CalculatorCalculate employee turnover rate from separations and average headcount.Score 2