Construction & DIY Calculators
Explore our full suite of 14 precision tools engineered for localized standards, instant results, and rigorous compliance.
US Concrete Calculator: Yards, Bags & Cost
Accurate imperial calculations for concrete slabs, footings, walls, and pre-mixed bags with recommended 10% jobsite waste margins.
US Dirt & Topsoil Calculator: Yards to Tons
Accurately compute cubic yards, tonnage, and dump truck capacity for topsoil, compost, and structural fill dirt projects.
US Drywall Calculator: Sheets, Mud & Screws
Precision estimation for 1/2-inch and 5/8-inch drywall boards, joint compound buckets, paper tape rolls, and fasteners.
US Pea Gravel Calculator: Yards to Tons
Accurately compute gravel tonnage, cubic yards, and 0.5 cu ft bags for landscape beds, dog runs, and decorative pathways.
UK Decking Calculator: Boards, Joists & Costs
Accurate metric estimates for garden decking boards (120mm/145mm), 400mm joist centers, screws, and total GBP £ material budget.
UK MOT Type 1 Calculator: Tonnes & Bags
Determine exact MOT Type 1 crushed limestone/granite sub-base tonnage for British driveways, patios, and block paving.
UK Radiator BTU Calculator: Room Sizing & Watts
Accurately compute heating requirements (BTU/hr & kW) to size Type 11, Type 21, and Type 22 panel radiators.
Calculateur de Béton : Volume m³, Sacs & Prix
Calcul précis en unités métriques canadiennes pour dalles, fondations, patios et sacs de ciment prémélangé de 30 kg / 25 kg.
Australian Decking Calculator: Boards, Joists & AUD $
Metric timber estimation for Australian Merbau, Spotted Gum, and Treated Pine decking with AS 1684 subframe guidelines.
Calculator for Cable Size: Australian AS/NZS 3008 Standards
Accurate voltage drop and current-carrying capacity calculations for 230V single phase and 400V three phase circuits.
Boiler Feed Pump Calculator: GPM, TDH & Horsepower
Accurately compute required feed pump capacity (GPM with 1.25 safety factor), discharge pressure, and brake horsepower (BHP) for commercial and industrial steam boilers.
Sand Calculator: Cubic Yards, Tons & Bags
Accurately compute tons and cubic yards of masonry sand, concrete sand, play sand, and river rock for pavers, pools, arenas, and masonry mortar.
UK CIS Calculator: Construction Industry Deductions
Accurately compute HMRC Construction Industry Scheme (CIS) 20% and 30% tax deductions on labor, excluding building materials, plant hire, and VAT.
Concrete Calculator Australia: Volume m³, Bags & Slab Cost
Accurately compute concrete cubic metres (m³), dry pre-mix bags, and total slab cost in AUD for driveways, sheds, and post footings under AS 3600.