The free toolkit replacing spreadsheets on UK building sites
From cable sizing to concrete volumes, AI quotes to RAMS documents — professional tools that work as hard as you do. No signup, no fees, just results.
No signup. No downloads. No nonsense.
Choose from 20+ professional calculators and AI tools
Plug in your measurements, specs, or requirements
Materials, costs, documents — ready to use
Professional-grade calculators and AI-powered tools built for UK construction professionals.
BS7671 compliant cable sizing with voltage drop, grouping factors, and thermal corrections. Full 18th Edition.
Calculate optimal downlight positions. Generate professional lighting plans with PDF export.
Calculate steel weights for UB, UC, RSJ, RHS, SHS, CHS sections. Cut lists, transport loads, and costs.
Calculate tiles, battens, felt, ridge tiles and all materials for any roof pitch and tile type.
Add or remove VAT instantly. Calculate CIS deductions for subcontractors at 20% or 30%.
Calculate concrete volume, ready mix loads, bags needed, and mix ratios for any pour.
Calculate quantities for stone walling, concrete blocks, and bricks with mortar estimates.
Calculate panels, feather edge, posts, rails, gravel boards, and postcrete for any job.
Calculate hardcore, bedding mortar, sand, cement, and waste removal with skip recommendations.
Calculate plaster, render, and plasterboard quantities. All types from Multi-Finish to Monocouche.
Generate professional, client-ready quotes with AI. Expands descriptions into detailed scope of works.
Generate comprehensive Risk Assessment Method Statements following HSE guidelines and CDM.
Create safe lift plans following LOLER and BS 7121 standards with AI-powered risk analysis.
Generate professional plumbing certificates for completed work with AI-powered content.
Add digital signatures to documents and PDFs. Draw or type your signature, then export.
Calculate stone volumes and costs with labour & markup. Toggle m³/ft³. Save/load jobs to continue later.
Calculate weights for materials and shapes. Built-in density database for construction materials.
Track working hours, breaks, and overtime. Export timesheets for payroll.
Track annual leave, sick days, and bank holidays. Export/import CSV for easy management.
Find nearby builders merchants, tool suppliers, and building materials. Get directions and contact info.
Tools designed by tradespeople, for tradespeople. No fluff, just features that matter.
All calculations use UK units, standards, and regulations. From BS specifications to HSE guidelines.
Instant calculations with no loading. Works offline once loaded. Get answers in seconds.
Generate professional quotes, RAMS, and certificates using advanced AI. Save hours of paperwork.
Works perfectly on phones, tablets, and desktops. Use it on site, in the van, or in the office.
Enterprise-grade security with encrypted connections. Your data stays private and protected.
All tools completely free to use. No subscriptions, no hidden fees, no account required.
Created by people who've worked on real sites. We understand your challenges because we've lived them.
Stop wrestling with spreadsheets and paperwork. Our tools cut admin time so you can focus on the job.
Join sparks, plumbers, chippies, and builders across the UK who've made the switch.
🚀 Get Started — It's FreeNo signup required. Just pick a tool and go.