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Carbon Footprint CalculatorEstimate monthly carbon footprint from transport, electricity, gas, flights, and waste.Score 4environmentCar CO2 CalculatorEstimate vehicle CO2 emissions from distance and emissions factor.Score 4environmentFlight CO2 CalculatorEstimate flight emissions from distance, passenger factor, and radiative forcing multiplier.Score 4environmentHome Energy CO2 CalculatorEstimate home energy emissions from electricity and gas usage.Score 4environmentWater Usage CalculatorEstimate household water usage from people, daily use, garden use, and days.Score 4environmentPlastic Waste CalculatorEstimate plastic waste from items used, item weight, and recycling rate.Score 4environmentRecycling Impact CalculatorEstimate CO2 savings from recycled material weight and savings factor.Score 4environmentElectricity CO2 CalculatorEstimate electricity-related emissions from kWh and grid factor.Score 4environmentSolar CO2 Saving CalculatorEstimate CO2 savings from solar generation and grid emission factor.Score 4environmentMortgage 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 2Trip Budget CalculatorEstimate a complete travel budget from transportation, lodging, food, and activities, then review per-person, per-day, savings, and planning insights.Score 2