Calculate a takeoff

Calculate rectangular slabs, walls and surfaces, pipe lengths and fitting counts. Convert mixed length units before calculating. Deduct wall or surface openings. Keep area, volume, length and counts separate. No waste or costs are added. One calculation counts as one takeoff. Returns ok: false with validation errors for invalid or missing dimensions. Optionally save the result to your account.

Input

Field	Type	Description
`name`	string	Takeoff name. Defaults to Untitled takeoff.
`notes`	string	Your reference or scope notes. No allowance is added from notes.
`output_unit`	string	Base unit for length, square area and cubic volume results. Defaults to m, giving m, m² and m³.
`save`	boolean	Save this takeoff to your account. Requires storage. Defaults to false.
`items` (required)	array	Measurement lines in one takeoff. Each calculation counts as one takeoff.

Output

Field	Type	Description
`ok` (required)	boolean
`errors`	array
`result`	object
`saved_id`	string
`created_at`	string