Solar, Energy & Sustainability Calculators
80 free solar, energy & sustainability calculators in Other.
- Air Conditioner Running CostEstimate what running a window or portable AC costs monthly.
- Annual Electricity CostFree Annual Electricity Cost calculator with clear step-by-step results.
- Battery Bank Amp Hour CalculatorConvert between amp-hours, kilowatt-hours and runtime for a battery bank.
- Battery Bank Size CalculatorSize an off-grid battery bank in amp-hours for the autonomy required.
- Battery Bank Voltage CalculatorChoose a battery bank voltage and work out the series and parallel arrangement.
- Battery Charge Time CalculatorEstimate how long a battery takes to charge from a solar array or charger.
- Battery Cycle Life CalculatorProject battery cycle life and calendar life under a given duty cycle.
- Battery Depth of Discharge CalculatorTrade depth of discharge against cycle life and usable energy.
- Battery Discharge Time CalculatorCalculate how long a battery lasts at a given load, allowing for capacity derating.
- Battery Energy CalculatorCalculate the energy stored in a battery and its usable portion.
- Battery Power CalculatorCalculate the power a battery can deliver and the C-rate that implies.
- Battery RuntimeFree Battery Runtime calculator with clear step-by-step results.
- Battery State of Charge CalculatorEstimate battery state of charge from resting voltage.
- Breaker SizeFree Breaker Size calculator with clear step-by-step results.
- Building Energy IntensityFree Building Energy Intensity calculator with clear step-by-step results.
- Carbon Footprint CalculatorEstimate an annual carbon footprint across energy, travel, food and consumption.
- Carbon Offset CalculatorWork out the offsets needed to neutralise a given quantity of emissions.
- Carbon Offset Cost CalculatorCompare the cost of offsetting emissions against reducing them at source.
- Diesel Generator Cost CalculatorTotal the cost of running a diesel generator including fuel, servicing and capital.
- Electric Vehicle Carbon Savings CalculatorCompare lifetime emissions of an electric vehicle against a petrol equivalent.
- Energy Consumption CalculatorWork out total energy consumption and cost across a set of devices.
- Energy Efficiency CalculatorCompare useful energy output against energy input to get efficiency and losses.
- Energy Savings CalculatorQuantify the annual saving from an energy efficiency measure and its payback.
- Energy Star Savings CalculatorCompare an efficient appliance against a standard model over its lifetime.
- Energy Storage CostFree Energy Storage Cost calculator with clear step-by-step results.
- Energy Usage Cost CalculatorCalculate what an appliance costs to run per day, month and year.
- Generator FuelEstimate fuel burned and cost of running a generator daily.
- Generator Fuel Consumption CalculatorEstimate generator fuel consumption and run time from tank capacity.
- Generator Load CalculatorCheck generator loading and whether it sits in the healthy operating band.
- Generator Size CalculatorSize a generator for a connected load including starting surge.
- Grid Tie Solar CalculatorSize and evaluate a grid-connected solar system without storage.
- Horsepower to WeightFree Horsepower to Weight calculator with clear step-by-step results.
- Household Carbon Footprint CalculatorEstimate a household carbon footprint from energy use, travel and occupancy.
- Hybrid Solar System CalculatorSize a hybrid solar system with battery and grid backup.
- Inverter Efficiency CalculatorCompare inverter input and output power to find efficiency and losses.
- Inverter Runtime CalculatorCalculate how long an inverter can run a load from a battery bank.
- LED SavingsCompare old bulbs with LEDs and see yearly dollar savings.
- Monthly Electricity CostFree Monthly Electricity Cost calculator with clear step-by-step results.
- Mulch DepthWork out mulch bags and depth for garden beds.
- Off Grid Solar CalculatorSize a complete off-grid solar system including array, battery and inverter.
- Power to Weight RatioFree Power to Weight Ratio calculator with clear step-by-step results.
- Renewable Energy Percentage CalculatorCalculate what share of total energy use comes from renewable sources.
- Renewable Energy ROI CalculatorAssess the return on a renewable energy investment against its lifetime savings.
- Room Cooling CostEstimate cooling cost from room size, watts per square foot and usage.
- Solar Array Current CalculatorCalculate array string current and voltage for cable and controller sizing.
- Solar Array Voltage CalculatorCheck string voltage across the temperature range against inverter limits.
- Solar Azimuth CalculatorAssess the yield impact of panel orientation away from true south or north.
- Solar Battery Backup CalculatorWork out how long a solar battery will run essential loads during an outage.
- Solar Battery PaybackFree Solar Battery Payback calculator with clear step-by-step results.
- Solar Battery Size CalculatorSize a solar battery in kilowatt-hours for the evening load you want to cover.
- Solar Cable Size CalculatorSize DC solar cable for current capacity and acceptable voltage drop.
- Solar Capacity Factor CalculatorCalculate the capacity factor of a solar installation and compare it with other sources.
- Solar Charge Controller CalculatorSize an MPPT or PWM charge controller for a solar array and battery bank.
- Solar Degradation CalculatorProject panel output decline over the system lifetime and against warranty terms.
- Solar Energy Production CalculatorProject annual and lifetime solar generation including degradation.
- Solar Export CalculatorCalculate exported solar energy and the revenue it earns.
- Solar Generator Sizing CalculatorSize a portable solar generator or power station for a set of loads.
- Solar Import CalculatorCalculate remaining grid imports after solar and the cost they carry.
- Solar Inverter Size CalculatorSize a solar inverter for an array, including the DC to AC ratio.
- Solar LCOE CalculatorCalculate the levelised cost of solar electricity over the system lifetime.
- Solar Panel AreaFree Solar Panel Area calculator with clear step-by-step results.
- Solar Panel CountFree Solar Panel Count calculator with clear step-by-step results.
- Solar Panel Output CalculatorCalculate the real output of a panel after temperature, soiling and age derating.
- Solar Panel Size CalculatorWork out how many panels of a given wattage are needed for a target output.
- Solar Panel Spacing CalculatorCalculate the row spacing needed to avoid inter-row shading.
- Solar Payback CalculatorCalculate how long a solar system takes to repay its cost through bill savings.
- Solar Peak Sun Hours CalculatorConvert daily solar irradiation into equivalent peak sun hours.
- Solar Performance Ratio CalculatorCalculate the performance ratio of a solar installation against its theoretical output.
- Solar RadiationFree Solar Radiation calculator with clear step-by-step results.
- Solar ROI CalculatorWork out the return on investment and payback period of a solar installation.
- Solar Self Consumption CalculatorCalculate what share of solar generation is used on site rather than exported.
- Solar System Size CalculatorSize a solar array in kilowatts from annual consumption, sun hours and system losses.
- Solar Tilt Angle CalculatorFind the optimal panel tilt angle for a latitude and season.
- TopsoilVolume and cost of topsoil for lawn and beds.
- Tree Carbon Offset CalculatorCalculate how many trees are needed to absorb a given quantity of CO2.
- UPS Backup Time CalculatorCalculate UPS runtime for a load from its installed battery capacity.
- UPS Battery Size CalculatorSize UPS batteries for a required runtime at a given load.
- UPS Load CalculatorSize a UPS for a connected load with headroom and power factor accounted for.
- Wire FillFree Wire Fill calculator with clear step-by-step results.
- Wire Voltage DropFree Wire Voltage Drop calculator with clear step-by-step results.