✅ Calculate materials fast. Build with confidence.
SmartBuildCalc turns measurements into instant quantities, costs and tidy shopping lists — perfect for UK builders, DIYers and contractors.
No sign-up • Works on mobile • Metric & imperial
🔧 Why Use SmartBuildCalc?
Quickly calculate construction materials — fast, free and accurate. Built for real-world site work.
⏱️ Save Time
Instant material and cost estimates — no spreadsheets.
📉 Cut Waste
Calculate only what you need to reduce leftovers and cost.
💷 Stay on Budget
Know your numbers upfront with optional waste buffers.
👷 Plan Like a Pro
Simple controls, contractor-grade logic, mobile ready.
🛠️ How It Works
- Pick a calculator (e.g., Sub-Base, Concrete, Excavation).
- Enter measurements and choose units (m, mm, ft, in).
- Get instant volume, weight and cost — plus a tidy materials list.
📏 Popular Building Calculators
Accurate results in seconds. Start with these favourites:
- 🪨 Sub-Base Material Estimator (MOT Type 1)
- 🧺 Concrete Volume Calculator (Ready-Mix & Bags)
- 📐 Patio Paving Calculator
- 💰 Paving Cost Calculator
- 🛠️ DIY Concrete Mix Ratios
- 🧱 Paving Bed Volume
- 🪵 Floorboard Coverage
- 🧩 Wall & Floor Tile Coverage
- 🎨 Paint Coverage
- 🪓 Excavation Volume (Soil, Trench & Foundations)
- 🔩 Roofing Nails & Fixings
- 🪨 Gravel & Hardcore Estimator
🧰 Recommended Tools & Materials
Planning a buy? Our guides help you pick the right materials:
Some links in our guides are affiliate links (marked ); commissions support our free tools at no extra cost.
About SmartBuildCalc
SmartBuildCalc was created by experienced UK builders who believe good building starts with good numbers. Our calculators are built for real-world use—fast, accurate and practical—helping builders, contractors and DIYers plan materials without guesswork.
Need a calculator added?
Tell us what you want next—decking, drywall, roof slate, you name it.
Request a Calculator