Free Tools for Trade & Home
17 free cost calculators and 51 in-depth guides for homeowners and contractors across the US.
Solar panels, roof replacement, kitchen renovation, HVAC, windows, flooring, insulation and more — with regional labor pricing for all 50 states and zero signup required.
19 Free Calculators
Solar, HVAC, roofing, kitchen, bathroom, deck, windows, flooring, insulation and more — with regional US pricing.
51 In-Depth Guides
Research-backed cost guides, buying guides and how-tos for every major home improvement project.
Regional Pricing
Labor costs adjusted for your state. RSMeans & BLS data covering all 50 US states.
No Signup Required
Every calculator and guide is completely free — no account, no email, no ads.
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Trade Categories
Choose your trade
Calculators and cost guides for the most common home improvement and trade projects.
Solar & Photovoltaics
Panel cost, annual savings, IRA 30% tax credit, 25-year profit projection. Covers US states & Australian states.
Roofing
8 materials from asphalt shingles to slate. Dual metric & imperial output, roofing squares, labor included.
Windows
Replacement window costs by material (uPVC, timber, aluminium) and glazing type. Includes fitting.
Garden & Landscaping
Lawn, patio, paths and planting costs. Three quality tiers with DIY vs. contractor savings.
Plumbing & Heating
Heat pump cost & payback, energy grant calculator and more — currently in German.
Electrical & PV
German PV calculator with regional EEG tariffs. English version launching soon.
Tools & Calculators
Digital helpers for every project
Free calculators with regional pricing data — works on mobile, no account needed.
Solar Panel Cost Calculator
Annual savings, IRA 30% tax credit, payback period and 25-year profit for US & AU.
Roof Replacement Calculator
8 materials, dual metric/imperial output, roofing squares and full labor estimate.
Window Cost Calculator
Replacement window costs by material and glazing, with fitting included.
Garden Landscaping Calculator
Lawn, patio, paths and planting. Budget vs. mid-range vs. premium tiers.
Built on contractor quotes. Not assumptions.
Most online calculators pull from outdated national averages. Ours use regional data. Solar irradiance by state, roofing labor rates by market, material costs updated annually — so your estimate reflects what you'd actually pay.
“We tried five different quoting tools. None gave us regional numbers. So we built our own — with the data contractors actually use.”
The Clean Invoice team
Regional Pricing
Material and labor rates for US states and AU territories.
Metric + Imperial
Switch between m² and sq ft — whichever you prefer.
IRA Tax Credit
Live 30% federal tax credit calculation built into solar.
25-Year Projection
Long-term ROI table for solar investments.
All tools are 100% free. No credit card, no registration, no ads.
Cost Guides
Know before you quote
In-depth pricing guides for homeowners and contractors — updated for 2026.
Solar Panel Cost & Savings Guide 2026
Average US solar costs, IRA 30% federal tax credit, state incentives and real payback examples for Arizona, California, Texas and more.
Read guideRoof Replacement Cost Guide 2026
Asphalt shingles to slate: full material comparison with $/m² and $/sq ft pricing, labor breakdown and waste allowance tables.
Read guideWindow Replacement Cost Guide 2026
uPVC, timber and aluminium windows: how material choice, glazing and size affect the final price.
Read guideGarden Landscaping Cost Guide 2026
Lawn, patio, paths and planting cost ranges. See where DIY saves most and where pros pay off.
Read guideHow to Read a Roofing Quote
What roofing squares mean, which line items are negotiable and how to compare quotes from different contractors.
Read guideIs Solar Worth It in 2026?
A data-driven look at payback periods across US states and Australian territories — with and without battery storage.
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