Sam Gorman

Convert Wh, kWh, or mWh to amp-hours using a battery’s nominal voltage. See matching mAh and watt-hours.

Convert kW to amps using voltage, circuit type, power factor, three-phase voltage basis, and optional efficiency.

Convert amps to estimated kW for DC, single-phase AC, or three-phase AC using voltage, power factor, and voltage basis.

Find volts from watts using current or resistance, with DC, single-phase AC, three-phase AC, power factor, and unit options.

Convert volts and amps to watts for DC, single-phase AC, or three-phase AC, with power factor and VA shown.

Calculate amps from watts and voltage for DC, single-phase AC, and three-phase AC loads, with power factor for AC.

Convert amps and volts to watts for DC, single-phase AC, or three-phase AC, with power factor and VA shown for AC.

Estimate a grow light beam footprint, corner coverage, ideal average PPFD, and optional DLI for your plant canopy.

Estimate true wall watts for an indoor grow light from area, DLI goal, hours, efficiency, and electricity cost.

Estimate recessed light count, centered rows and columns, center spacing, and wall offsets for a rectangular room.