How It Works
Getting a renovation budget estimate takes less than 60 seconds. Our calculator uses real-world cost data to give you a realistic range — not an optimistic guess that falls apart once work starts.
Choose Your Room Type and Region
Select from kitchen, bathroom, bedroom, living room, or whole home renovation. Then pick your region — United Kingdom, United States, Canada, or Australia — to see costs in your local currency with appropriate regional adjustments. Renovation costs vary significantly between countries due to differences in labour rates, material costs, and building regulations, and our calculator accounts for this.
Enter Size, Finish Level, and Contingency
Input your space size in square metres or square feet — the calculator handles the conversion automatically. Choose between basic (budget-friendly materials, minimal changes), mid-range (quality materials, some customisation), or high-end (premium everything, layout flexibility). Then set your contingency percentage: we recommend 10-15% for straightforward projects and 15-20% for older properties or complex work where hidden surprises are more likely.
Get Your Estimate and Export
Receive an instant cost range showing total estimated spend and cost per square metre (or per square foot). The range reflects realistic low and high scenarios based on current market data. You can save your inputs for later, download a professional PDF breakdown to share with contractors or family, and adjust any parameter to see how changes affect the bottom line. Remember: these are planning figures, not quotes — always get written quotes from qualified professionals before committing.
Why Use Our Calculator?
Planning a renovation without a budget is like driving without a map. Our free tool gives you the confidence to move forward with realistic expectations, whether you're getting mortgage approval, comparing contractor quotes, or simply deciding if a project is financially viable.
Instant Estimates
Get cost ranges in seconds based on room type, size, and finish level. No waiting, no signup, no hidden fees — just straightforward planning figures whenever you need them.
All Room Types Covered
Whether you're updating a kitchen, refreshing a bathroom, renovating a bedroom, revamping a living room, or tackling a whole-home refresh, our calculator covers every major room type with tailored cost data.
Realistic Planning with Contingency
Every renovation encounters surprises. Our calculator includes adjustable contingency percentages so your budget accounts for unexpected costs like hidden wiring, damp, or structural issues behind walls.
PDF Export & Save
Download your estimate as a professional PDF with full breakdown and disclaimers. Save your inputs to revisit later. Perfect for sharing with partners, mortgage advisors, or contractors.
Multi-Region Support
Get estimates in your local currency with region-adjusted costs. We support the United Kingdom, United States, Canada, and Australia with appropriate cost multipliers for each market.
Private & Free Forever
All calculations happen in your browser. We don't store your data on any server, don't require registration, and will never charge for this tool. Your renovation plans stay completely private.
What You Can Estimate
Our calculator covers the most common renovation projects. Each room type has its own cost model reflecting the specific trades, materials, and complexity involved.
Kitchen Renovation
Cabinets, worktops, appliances, plumbing, and electrical. The most complex room with costs from £800-£3,500/m².
Bathroom Remodel
Waterproofing, tiling, fixtures, and plumbing in tight spaces. Often higher per-m² cost than kitchens.
Bedroom Update
Flooring, paint, lighting, and fitted wardrobes. Generally the most affordable room to renovate.
Living Room Refresh
Flooring, lighting, built-ins, and potentially structural changes for open-plan layouts.
Whole Home
Complete renovation including all rooms, rewiring, re-plumbing, and potentially structural work.
Budget Planning
Understand contingency, phasing, and where to save — or splurge — on your renovation.