Bathroom Renovation Cost Calculator
Estimate UK bathroom renovation costs by size, finish quality, location, extras, and contingency
32 free calculators
UK construction calculators for materials and building projects
Estimate bricks, timber, insulation, plasterboard, drainage, shed bases, loft suitability, and renovation budgets with clear metric formulas.
Block Paving Calculator
Calculate block paving quantities, sharp sand bed volume, and waste allowance
Board Foot Calculator
Calculate board feet from timber thickness, width, length, and quantity, with metric volume conversions
Boiler Size Calculator
Estimate UK boiler size from property type, bedrooms, bathrooms, radiators, and insulation level
Cubic Feet Calculator
Calculate cubic feet from length, width, and height for storage, shipping, and volume estimates
Cubic Metres Calculator
Calculate cubic metres from metric dimensions for concrete, soil, skips, tanks, and material volumes
Cubic Yards Calculator
Calculate cubic yards for soil, mulch, aggregates, concrete, and landscaping materials
Drainage Calculator
Estimate rainwater runoff flow rate from area, rainfall intensity, and surface type
Feet and Inches Calculator
Add, subtract, multiply, or divide feet and inches measurements for construction and DIY work
Flow Rate Calculator
Calculate water flow rate from collected volume and time or from pipe diameter and velocity
House Extension Cost Calculator
Estimate UK house extension build cost by size, quality, location, extras, and contingency
Insulation Calculator
Calculate loft, wall, or floor insulation rolls from area, coverage, and waste allowance
Kitchen Renovation Cost Calculator
Estimate UK kitchen renovation budget by room size, quality, location, extras, and contingency
Linear Feet Calculator
Calculate total linear feet for boards, trim, fencing, shelving, and repeated lengths
Loft Conversion Calculator
Check loft conversion suitability using headroom, roof pitch, usable width, and usable floor area
Paint Calculator
Calculate how many litres of paint you need for walls, ceilings, rooms, and single walls
Pipe Volume Calculator
Calculate water volume in pipe runs and heating systems for planning and inhibitor dosing
Plywood Calculator
Estimate plywood sheet quantities, weight, and cost from project area, sheet size, and waste allowance
Radiator BTU Calculator
Calculate radiator BTU and watt output needed from room size, insulation, glazing, and target temperature
Rafter Length Calculator
Calculate rafter length from span, rise, pitch angle, and overhang
Scale Drawing Calculator
Convert between scale drawing measurements and real-world dimensions using ratio scales
Shed Base Calculator
Calculate concrete volume, bag quantities, or paving slabs for a shed base
Square Footage Calculator
Calculate square feet from room length and width, or convert from square metres
Square Metres Calculator
Calculate square metres from metric dimensions for rooms, walls, floors, gardens, and materials
Square Yards Calculator
Calculate square yards for carpets, fabric, turf, and surface measurements
Staircase Calculator
Calculate number of steps, rise, going, pitch, and basic UK stair compliance checks
Stud Wall Framing Calculator
Estimate studs, plates, noggins, and timber length for an internal stud wall
Tank Volume Calculator
Calculate rectangular or cylindrical tank capacity in litres, cubic metres, UK gallons, and US gallons
Timber Calculator
Calculate timber for stud walls, floor joists, and roof rafters using UK metric spacing
Trim and Moulding Calculator
Calculate skirting board, architrave, coving, and picture rail lengths for a room
Underfloor Heating Calculator
Estimate electric or wet underfloor heating output, pipe length, coverage, and running costs
Wallpaper Calculator
Calculate how many wallpaper rolls you need using UK standard roll sizes
Explore other calculators
Directory
Browse Construction calculators and resources
Use these links to move quickly between the most useful calculators, topic groups, guides, and official resources for this category.
Popular calculators
Useful resources
- Planning Portal
UK planning and building control guidance for home building projects.
- GOV.UK building regulations approval
Official guidance on when building regulations approval may be needed.
- Health and Safety Executive construction guidance
Health and safety guidance for construction, building, and maintenance work.