Professional Trade Calculators
Built for UK Tradespeople
100+ free calculators compliant with British Standards. Save time,
reduce errors, and work with confidence.
Why Trade Professionals Choose TradeCalcs
Built by tradespeople who understand your daily challenges
Lightning Fast
Get instant results with our optimized calculations. No waiting, no complex forms.
BS 7671 Compliant
All electrical calculations follow current British Standards for peace of mind.
Mobile Ready
Use on any device - phone, tablet, or desktop. Calculate on-site or in the office.
Always Free
No hidden costs, no premium tiers. Professional tools available to all tradespeople.
From Calculation to Compliance — All in One Place
Save calculations to projects, auto-extract materials, get wholesaler pricing,
generate quotes & invoices, and download compliance evidence packs.
Calculate
BS 7671 compliant
Save to Project
Materials auto-extracted
Get Pricing
Send to wholesaler
Quote Customer
Professional PDF
Invoice
Track payments
Evidence Pack
Compliance records
Why Tradespeople Love It
Calculations backed by real data
Not blank forms — actual BS 7671 & Building Regs compliant records
Wholesaler pricing built in
Send materials list, get trade prices back automatically
Professional quotes & invoices
Your branding, proper layout, payment tracking included
Compliance evidence packs
Download PDF proof of all design calculations for any project
Free to start
No subscription needed for basic projects
Compliance Evidence Packs
Download professional PDF records of all calculations for any project. Perfect for building control, insurance claims, and client records.
Free • No signup required to try
Free Professional Calculators
100+ calculators for every trade
Generate Professional Quotes in 2 Minutes
Calculate materials, labour costs, and create client-ready PDF quotes instantly
Free to use • No sign-up required • Professional PDF quotes
HUB PAGE
All Electrical Calculators
Voltage drop, cable sizing & 50+ use-case calculators for every circuit type
All Cable Sizing Calculators
28 use-case calculators for every circuit type
Electrical Load Calculator
Calculate maximum demand with BS 7671 diversity factors. Determine supply size.
Cable Sizing Calculator
BS 7671 compliant electrical cable sizing with all derating factors
Voltage Drop Calculator
Verify BS 7671 Regulation 525 compliance for electrical circuits
Conduit Fill Calculator
Calculate cable capacity for conduit and trunking. BS 7671 40% fill limit.
Radiator BTU Calculator
Calculate exact heat output needed for any room. Accounts for insulation, windows & room type.
BSP Thread Identifier
Identify British Standard Pipe threads by diameter or TPI
Roofing Insurance Calculator
Calculate fair market value and fight for proper compensation
Drainage Calculator
Calculate pipe bedding, spoil removal & trench backfill quantities
Concrete-to-Bags Calculator
Calculate exact cement and ballast bags to buy from any UK merchant
Plasterer Calculators
Coverage, drying times, quotes & cost calculators for plasterers
Joinery Material Labour Calculator
Calculate wood costs, waste factors & labour hours for projects
Brick Block Calculator
Calculate bricks, concrete blocks, mortar & cement needed
Tiling Calculator
Calculate tiles, adhesive & grout for walls and floors
Paint Calculator
Calculate paint & primer quantities for any room or project
CIS Tax Calculator
Calculate Construction Industry Scheme deductions for contractors & subcontractors
HaulCheck - STGO Compliance
Avoid £750K fines - instant STGO category checks, weight limits & notification requirements
Scaffold Calculator
Calculate tubes, fittings, boards, ties & costs for independent and putlog scaffolds
Insulation U-Value Calculator
Calculate U-values & check Part L 2021 compliance for walls, roofs & floors
Can't find what you're looking for? We have 100+ calculators!
Built by Tradespeople, for Tradespeople
We understand the challenges you face every day because we've been there. Our tools are designed to make your job easier, faster, and more accurate.
Save Time On Every Job
Instant calculations mean less time with paperwork and more time doing what you do best
Reduce Costly Errors
Accurate, tested calculations help you avoid expensive mistakes and rework
Stay Compliant
All tools follow current British Standards so you work with confidence
Work From Anywhere
Access your tools on any device - perfect for on-site calculations
Ready to Work Smarter?
Join professional tradespeople who are already saving time and reducing errors with TradeCalcs.
No signup required • Instant access • Always free
Got a Better Idea? We're Listening
Have an improvement for our existing calculators? Want a brand new calculator built for your specific trade challenge? Or need automation to solve a recurring business problem? Let's talk.
Calculator Improvements
Missing a feature? Want us to add something to an existing calculator? Tell us your idea.
Custom Calculators
Need a specialized calculator built for your exact business needs? We build bespoke solutions.
Automation Tools
Sick of doing the same task manually? Let's automate it and save you hours every week.
Get in Touch Directly
Call or text anytime
07985 559775Quick message? WhatsApp or SMS
Same number, instant reply
Email for detailed requests
Why reach out?
- • You've spotted something we can improve
- • You need a calculator we haven't built yet
- • You want to automate a time-consuming process
- • You have a specific business problem to solve
- • You just want to say thanks or share feedback
I personally answer every message - whether it's a phone call, text, or email. Let's build something great together.
Need Something Custom?
We build bespoke web applications and automation tools for UK trade businesses. Got a specific problem? Let's create a solution together.
Bespoke Custom Apps
Custom web applications built specifically for your trade business. Automate workflows, capture data, streamline operations.
£2,000 - £15,000
White-Label Solutions
Host our calculators on your own website with your branding. Perfect for agencies, trade organizations, and consultancies.
From £99/month
API Integrations
Integrate our calculators into your existing platforms. Seamless API access for your business applications.
Custom pricing
Ready to Scale Your Business?
Whether you need a custom calculator, automation tool, or white-label solution - let's discuss how we can help your business grow.
Schedule a Call