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Solar & Electrical Calculators

Accurate, easy-to-use tools for residential and commercial solar projects

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Basic Electrical Conversions

Solar Power Calculations

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Featured Calculators

Our most popular tools to help you with your solar and electrical calculations

Basic Electrical Conversions

Watts to Kilowatt-hours Converter

Convert power in watts to energy in kilowatt-hours

kWh = (Watts × Hours) ÷ 1000
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Kilowatt-hours to Watts Converter

Convert energy in kilowatt-hours to power in watts

Watts = (kWh × 1000) ÷ Hours
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Volts to Watts Converter

Calculate power in watts based on voltage and current

Watts = Volts × Amps
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AC to DC Conversion Calculator

Calculate DC voltage from AC RMS voltage

DC Voltage = AC RMS × √2
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Solar Power Calculations

Solar Panel Output Calculator

Calculate the energy output of a solar panel system

Energy (kWh) = System Size (kW) × Peak Sun Hours × Efficiency Factor
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Solar Panel Angle Calculator

Calculate optimal tilt angle for solar panels based on location

Optimal Angle = Latitude × 0.9 + 29° × sin(Latitude - 23.5°)
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Solar Irradiance Calculator

Estimate solar irradiance based on location and weather conditions

Irradiance = Base Irradiance × Cloud Cover Factor × Air Mass Factor
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Solar Power Density Calculator

Calculate power density of solar installations per square meter

Power Density = Panel Efficiency × Solar Irradiance
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Residential Solar

Solar System Size Calculator

Estimate the required solar system size based on energy consumption

System Size (kW) = Daily Energy (kWh) ÷ (Peak Sun Hours × Efficiency Factor)
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Solar Payback Period Calculator

Calculate the estimated payback period for a solar installation

Payback Period = System Cost ÷ Annual Savings
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Battery Storage Sizing Calculator

Calculate the battery capacity needed for your energy storage needs

Battery Capacity = (Daily Energy × Backup Days) ÷ (DoD × Inverter Efficiency)
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Solar Roof Space Calculator

Calculate available roof space for solar panel installation

Available Panel Count = Usable Roof Area ÷ Panel Area
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Commercial

Commercial Solar ROI Calculator

Calculate return on investment for commercial solar installations

ROI = (Net Profit / Investment) × 100%
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Commercial Load Calculator

Calculate electrical load requirements for commercial buildings

Total Load = Base Load + Area-Based Load + Equipment Load
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Solar Carport Calculator

Design and calculate output for commercial solar carports

Annual Energy = Carport Area × Panel Efficiency × Solar Irradiance × 365 days
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Commercial Solar Incentives Calculator

Calculate available solar incentives and tax benefits for businesses

Total Incentives = Federal Tax Credit + Depreciation + Local Rebates
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Utility

Wire Voltage Drop Calculator

Calculate voltage drop in DC and AC electrical systems

Voltage Drop (%) = (2 × ρ × L × I) / (V × A) × 100
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Solar Energy Cost Calculator

Calculate the levelized cost of energy (LCOE) for solar power

LCOE = (Total Lifetime Cost) ÷ (Total Lifetime Energy Production)
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Grid Integration Calculator

Calculate parameters for integrating solar with the grid

Capacity Value = Solar Capacity × Capacity Credit × Peak Coincidence
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Microgrid Design Calculator

Calculate specifications for microgrids with solar and storage

Storage Requirement = Peak Load × Duration / DoD / Inverter Efficiency
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Understanding Solar Energy

Solar energy is one of the most abundant and sustainable energy sources available today. Learn about the basics of solar power and how it can benefit your home or business.

Economic Benefits

Solar power systems can help reduce or eliminate your electricity bills, protect against rising energy costs, and may increase property value. Many regions offer tax incentives and rebates to make going solar more affordable.

How Solar Works

Solar panels convert sunlight into electricity through the photovoltaic effect. This DC electricity is then converted to AC power by inverters for use in homes and businesses, with excess energy often being stored in batteries or fed back to the grid.

Getting Started

The first step in going solar is understanding your energy needs. Use our calculators to determine system sizes, potential savings, and more. Then consult with solar professionals to design a system that meets your specific requirements.

Frequently Asked Questions

Get answers to common questions about solar energy and our calculators

Why Use Our Solar and Electrical Calculators?

Designed to make complex calculations simple and accessible for everyone

User-Friendly Interface

Our calculators are designed with simplicity in mind, making them accessible to users of all levels of expertise—from DIY enthusiasts to seasoned professionals.

Accurate and Reliable Results

Each calculator utilizes scientifically-backed formulas and algorithms to ensure you receive the most accurate results for your energy assessments.

Comprehensive Resource Hub

In addition to our calculators, explore our library of articles and guides on solar energy, electrical systems, and energy efficiency to enhance your understanding.

Need a Custom Calculator?

Don't see the calculator you need? We're continuously adding new tools. Let us know what you'd like to see next by visiting our main site and contacting support.

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