29 July 2026
Best Free Tools for Roofers and Contractors (2026)
By Shaun, Founder of QuoteCore+.
The right free tools save you time on every job. Instead of doing maths in your head, scribbling on offcuts of plasterboard, or building yet another spreadsheet, you can punch in the measurements and let the tool apply the calculation consistently.
This guide covers the free roofing and construction tools built by QuoteCore+. They run in the browser, support manual use without a signup, and work across phone, tablet, and desktop.
Roof Takeoff Builder
What it does: Enter your plan dimensions, set the pitch, and it calculates roof area, ridges, hips, valleys, barges, spouting, underlay, and fixings - all with the correct pitch factors applied. You can also add material pricing and labour rates to get a full cost breakdown.
Who it is for: Roofers who quote from plans or measurements. Especially useful for re-roof and new-build work where you need a full material breakdown.
Why it saves time: Keeps component measurements, pitch calculations, material pricing, and labour pricing in one structured result.
Try the Roof Takeoff Builder (free)
Roof Pitch Calculator
What it does: Calculates roof pitch in degrees, ratio, and percentage from your measurements. Also converts between all three formats instantly.
Who it is for: Any roofer who needs to work out pitch from site measurements or convert between formats on plans.
Why it saves time: No more mental maths or looking up conversion tables. Enter what you know, get all three formats instantly.
Try the Roof Pitch Calculator (free) |Roof Pitch Converter (free)
Learn more: How to Calculate Roof Pitch (And Why It Matters for Your Quote)
Roof Area Calculator
What it does: Calculates actual roof surface area from plan dimensions and pitch. Works in metric, imperial, and roofing squares.
Who it is for: Roofers who measure from plans or need to convert plan area to actual surface area for material ordering.
Why it saves time: Applies the selected pitch factor consistently instead of requiring a separate conversion table.
Try the Roof Area Calculator (free) |Roof Square Footage Calculator (imperial) |Roof Square Metre Calculator (metric)
Learn more: How to Measure a Roof for Materials (Complete Guide)
Roofing Material Calculator
What it does: Calculates tile, underlay, and batten quantities from roof area. Supports multiple tile types with preset coverage rates.
Who it is for: Roofers building a material schedule from measured roof area and selected product inputs.
Why it saves time: Applies the selected coverage and allowance inputs to the measured area in one calculation. Check the result against the product datasheet before ordering.
Try the Roofing Material Calculator (free) |Shingle Calculator |Roof Tile Calculator
Learn more: How Much Roofing Material Do You Need? (Material Calculator Guide)
Rafter Length Calculator
What it does: Calculates rafter length from span and pitch. Also handles hip and valley lengths with the correct pitch factors.
Who it is for: Carpenters, roofers, and builders calculating rafter dimensions. Verify the result against the drawing and structural specification before cutting.
Try the Rafter Length Calculator (free) |Hip and Valley Calculator
Free Quote Generator
What it does: Creates a professional, printable quote with your logo, business details, and itemised line items. You can enter measurements manually, or upload a photo or paste text and AI fills in the form for you.
Who it is for: Any contractor who needs to produce professional quotes quickly. Works for roofing, construction, landscaping, and any trade.
Why it saves time: No more Word documents or spreadsheet templates. Enter your line items, review the document, and print it. AI Assist can parse a photo of site notes into draft fields, but the user must check every description, quantity, unit, and rate.
Learn more: How to Price a Roofing Job: Step-by-Step Pricing Guide
Free Invoice Generator
What it does: Same as the quote generator, but for invoices. AI-assisted photo upload and text parsing, multiple currencies, logo upload, print-to-PDF.
Who it is for: Contractors who need to invoice quickly after job completion. Can be pre-filled from the quote generator (convert a quote to an invoice in one click).
Try the Free Invoice Generator
Free Purchase Order Generator
What it does: Creates professional purchase orders for material orders. Same AI-assisted flow as the quote and invoice generators.
Who it is for: Contractors ordering materials from suppliers. Can be pre-filled from the quote generator.
Try the Free Purchase Order Generator
Full Roofing Calculator
What it does: All-in-one roofing calculator with tabs for roof area, rafter/hip and valley lengths, battens, smart component pricing, and angle finding.
Try the Full Roofing Calculator (free)
Construction Calculator
What it does: Floor and wall areas, timber and stud lengths, material quantities, and cutting angles. Same multi-tab format as the roofing calculator but for general construction.
Try the Construction Calculator (free)
Concrete Calculator
What it does: Slab and footing volumes with depth presets, formwork areas, falls, and ready-mix pricing.
Try the Concrete Calculator (free)
Landscaping Calculator
What it does: Garden and lawn areas, turf and topsoil quantities, slopes and gradients.
Try the Landscaping Calculator (free)
Bird's Mouth Calculator
What it does:Calculates bird's mouth seat cut and plumb cut angles, heel height, and notch depth with a 1/3-depth pass/fail check.
Try the Bird's Mouth Calculator (free)
Specialised Roofing Calculators
In addition to the main tools above, there are 20+ specialised roofing calculators for specific roof types and materials:
See all free tools on the Free Tools hub page or all roofing calculators on the Calculators hub page.
How these tools connect
Each tool works on its own, but they are designed to work together. Here is how the workflow looks for a typical roofing job:
- Measure the roof (site visit or plans)
- Enter dimensions into the Roof Takeoff Builder to get full material quantities
- Check pitch with the Roof Pitch Calculator if unsure
- Use the Quote Generator to turn quantities into a professional, priced quote
- Once the quote is accepted, use the Purchase Order Generator to order materials
- After the job, use the Invoice Generator to invoice the customer
The quote, order, and invoice generators can pass data between each other via URL parameters, so you do not have to re-enter information.
Want all of this in one connected app?
The free tools above are great for individual tasks. But if you want the whole workflow connected - takeoff, quoting, material orders, job management, invoicing, customer acceptance tracking, saved pricing templates, team access - that is what QuoteCore+ does.
From complex plan to quote in under 3 minutes for less than a dollar. Every feature, no card needed for the 14-day trial.
Start your free QuoteCore+ trial
Not sure if you need software yet? Read Roofing Quoting Software vs Spreadsheets: What Actually Saves Time? for an honest comparison.
FAQ
Are these tools really free?
Yes. The calculators, quote generator, invoice generator, purchase order generator, and roof takeoff builder support manual use without a paid plan. AI Assist has usage limits shown in the tool; anonymous users currently receive 3 AI image scans per day.
Do these tools work on mobile?
Yes. All tools are web-based and responsive. They work on phones, tablets, and desktops. No app to download.
Can I use these tools for commercial work?
The tools are designed for contractors, but you remain responsible for checking measurements, calculations, product specifications, quotes, and orders. Review the current terms of service before relying on an output for a client job.
Do I need to create an account?
No. All tools work without an account. If you want to save your work or use the AI photo upload beyond the free daily limit, you can create a free account for more access.
What is the difference between the free tools and QuoteCore+?
The free tools handle individual tasks - one calculation, one quote, one invoice at a time. QuoteCore+ connects everything: takeoff feeds into the quote, the accepted quote becomes a material order, the job is tracked through to completion, and the invoice is generated from the original quote data. It also includes saved pricing templates, a material catalog, customer management, and team access.
Ready to quote faster? Start your free QuoteCore+ trial today. No card needed. From complex plan to quote in under 3 minutes for less than a dollar.
Ready to quote faster?