Free lighting calculators for homeowners, electricians, and commercial buyers. Use any tool below to plan your project, estimate costs, or spec the right products.
Find out how many recessed lights you need for any room based on size, ceiling height, and room type. Includes a spacing diagram you can download and print.
Open CalculatorCalculate voltage drop for single or three-phase circuits. Covers all AWG gauges for copper and aluminum wire, with instant NEC compliance feedback.
Open CalculatorConvert watts to lumens, lumens to watts, or look up the LED equivalent of any incandescent bulb. Includes a bulb efficiency comparison chart.
Open CalculatorEstimate your annual savings from switching to LED lighting using a simple formula and worked example based on your actual hours of use and electricity rate.
Open CalculatorCalculate the number of high bay fixtures needed for warehouses, gyms, and large commercial spaces based on mounting height, spacing, and target foot-candles.
Coming SoonPlan fixture layout for any room type using target foot-candle levels and fixture output. Outputs a fixture count, grid spacing, and recommended layout.
Coming SoonNeed help choosing the right products for your project? Request a quote and our team will help with product selection, quantities, and pricing.