Free building calculators
Quick quantities for pricing a job or putting an order together with your merchant. No sign-up.
Bricks, blocks and mortar
Bricks or blocks for a wall, with the cement and building sand for the mortar.
Open calculator →Concrete
Volume for slabs and trench-fill footings, as a ready-mix order or bags to mix yourself.
Open calculator →Plaster and plasterboard
Bags of skim and undercoat, and sheets of board, for a room or a set area.
Open calculator →Extension budget
A rough cost range for a single or double-storey extension by size, spec and region.
Open calculator →Loft conversion budget
A rough cost range for a Velux, dormer, hip-to-gable or mansard conversion.
Open calculator →Need the whole job measured?
Send us your drawings and we take off every item, price it at current UK rates and send back an itemised estimate. From £120, in 3–5 working days.