Home circuit count calculator

The free browser tool and the API share the same arithmetic library, so the number on the page matches a task response—no network lookup, no randomness, and no dependence on the current date.

How to call the calculator and read every returned field

Convert square meters to square feet by multiplying by ten point seven six four before calling if your plans use metric area, and leave dedicated appliance circuits out of this count so the general lighting and outlet estimate stays clean. Provide sq_ft as the total conditioned floor area in square feet. Optional circuit_amps defaults to fifteen, voltage to one hundred twenty, va_per_sqft to three, and load_factor to zero point eight. The service computes total_va equals square feet times unit load, circuit_va equals amps times volts times load factor, then lighting_outlet_circuits equals the ceiling of total_va divided by circuit_va with a minimum of one. It also returns sq_ft_per_circuit so you can see how many square feet each usable circuit covers under your assumptions. Aliases such as square_feet, sqft, area_sq_ft, conditioned_sq_ft, amps, breaker_amps, volts, unit_load, and derate are accepted so forms and scripts are not locked to a single field name. Square footage, amps, voltage, and unit load must be strictly greater than zero; load_factor must be greater than zero and at most one. Missing or non-numeric required fields fail with invalid_input naming the field. There is no network lookup and no model inference—the same inputs always produce the same JSON.

Where teams use it and how pricing works

Batch jobs bill each successful computation as one item. The interactive tool above runs free in the browser for interactive checks. Source inputs and outputs are retained only for the platform retention window and are never used to train models. Use this endpoint when a builder takeoff sheet, electrical estimator dashboard, renovation planner, or permit worksheet needs a repeatable general-circuit count without embedding ad-hoc spreadsheet formulas in every client. Design firms can post many independent tasks—one per floor plate or unit type—and store lighting_outlet_circuits next to conditioned area for portfolio comparisons. Homeowners comparing a two-thousand-square-foot ranch to a three-thousand-square-foot two-story can change only sq_ft and see how the baseline general circuit demand scales. Educators can demonstrate continuous-load derating by toggling load_factor between one point zero and zero point eight while holding area fixed. Programmatic calls use the ForHosting KIT prepaid balance at $0.002 per successful request, with no subscription and no charge when validation fails. Because the arithmetic is tiny and fully local to the Worker, latency is dominated by the task queue handshake rather than by computation, which makes the capability suitable for high-frequency form validation as well as offline reprocessing of historical plan tables.