ConcreteMath.co.uk - UK Concrete Calculators & Guides
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UK's Leading Concrete Calculator & Resource Centre

Professional tools, comprehensive guides, and accurate calculations for builders, contractors, and DIY enthusiasts across the United Kingdom

🧮 Professional Concrete Calculator

📊 Calculation Results

Concrete Volume:
With 5% Wastage:
Estimated Cost:
Recommended Grade:
Approximate Weight:

📊 Footing Results

Concrete Volume:
With 5% Wastage:
Estimated Cost:
Recommended Grade: C25/30 or C30/37

📊 Steps Results

Concrete Volume:
With 10% Wastage:
Estimated Cost:
Recommended Grade: C25/30

Popular Concrete Calculators

🚗

Driveway Calculator

Calculate exact concrete volumes and costs for residential and commercial driveways with multiple layout options.

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🏗️

Foundation Calculator

Determine precise concrete requirements for strip, trench, pad, and raft foundations to BS standards.

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🏡

Patio & Path Calculator

Plan your garden paving projects with accurate material and cost estimates for any shape or size.

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🏠

Concrete Slab Calculator

Perfect for ground floors, garage floors, and shed bases with reinforcement recommendations.

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📐

Footings Calculator

Calculate strip footings and trench fill volumes for walls, extensions, and building foundations.

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🧱

Retaining Wall Calculator

Design retaining wall foundations with proper drainage and structural requirements included.

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🪜

Steps Calculator

Calculate concrete volumes for outdoor steps, staircases, and landing areas with rise/tread specifications.

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💷

Cost Estimator

Get detailed project cost breakdowns including materials, labour, equipment hire, and regional variations.

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⚗️

Mix Design Calculator

BS 8500 compliant mix designs with cement, aggregate, and water ratios for any strength grade.

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🔄

Unit Converter

Convert between cubic metres, tonnes, bags, square metres, and imperial measurements instantly.

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Comprehensive UK Concrete Guides

📘

Concrete Grades Comparison

Complete guide to C8/10 through C40/50 grades, strength classes, and when to use each grade for your project.

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📋

BS 8500 Standard Guide

Understanding UK concrete specifications, exposure classes, and compliance with British Standards.

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🏗️

Foundation Requirements

UK Building Regulations Part A guidance for foundation depths, types, and structural requirements.

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🚘

Driveway Installation Guide

Step-by-step instructions for installing concrete driveways including base preparation and finishing techniques.

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🏠

Extension Foundations

Planning and building foundations for home extensions with Building Control approval requirements.

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❄️

Winter Concreting Tips

Frost protection methods, cold weather concreting techniques, and temperature considerations for UK climate.

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☀️

Summer Concreting Tips

Hot weather concreting strategies, curing techniques, and preventing rapid moisture loss in warm conditions.

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🔨

DIY vs Professional Guide

When to tackle concrete work yourself and when to hire professionals, with cost-benefit analysis.

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🏡

Garden Wall Foundations

Building solid foundations for brick and block garden walls with proper depth and reinforcement specs.

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🚜

Ready-Mix vs Site-Mixed

Comparing ready-mixed concrete delivery with on-site mixing, costs, quality, and best use cases.

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💧

Curing in UK Weather

Essential curing techniques for British climate conditions to achieve optimal concrete strength.

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📏

Understanding Concrete Strength

How concrete strength is measured, tested, and specified using UK and European standards.

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Latest Articles & Resources

Ready-Mix Concrete Prices 2025

Current UK prices for ready-mixed concrete delivery, regional variations, and factors affecting costs including grade, distance, and minimum orders.

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Driveway Costs Per m²

Comprehensive breakdown of concrete driveway installation costs including materials, labour, base preparation, and finishing options.

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Concrete vs Block Paving

Detailed cost and durability comparison between concrete driveways and block paving with long-term maintenance considerations.

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Part A Structure Requirements

Essential Building Regulations Approved Document Part A guidance for concrete structures and foundations in the UK.

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BS EN 206 Explained

Understanding the European concrete standard BS EN 206 and how it applies to UK construction projects.

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Garage Base Installation

Complete guide to preparing and pouring a concrete base for garages including thickness, reinforcement, and drainage.

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Labour Rates UK 2025

Regional labour rates for concrete work, groundworkers, and specialist contractors across England, Scotland, Wales, and Northern Ireland.

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Extension Base Costs

Budget planning for extension foundations including excavation, concrete, Building Control fees, and typical price ranges.

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DPC & DPM Requirements

UK Building Regulations for damp proof courses and membranes, installation requirements, and material specifications.

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Regional Cost Differences

How concrete and construction costs vary across UK regions from London and Southeast to Scotland and Northern Ireland.

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Patio Installation Guide

Step-by-step instructions for creating beautiful concrete patios including edging, finishing, and decorative options.

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Pump Hire Costs

Concrete pump hire prices, types of pumps available, and when pumping is necessary for your project.

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Concrete Facts & Statistics

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Frequently Asked Questions

How much concrete do I need for my project? +

To calculate concrete volume, multiply length × width × depth (all in metres) to get cubic metres (m³). For example, a driveway 5m × 3m × 0.1m = 1.5m³. Always add 5-10% extra for wastage. Use our calculators above for instant accurate results with project-specific recommendations.

What concrete grade should I use for different projects? +

C8/10 for blinding and non-structural work, C15/20 for shed bases, C20/25 for patios and paths, C25/30 for driveways and garage floors, C30/37 for structural foundations, and C32/40 or C40/50 for commercial or heavy-duty applications. Always consult Building Control for structural work.

How much does ready-mix concrete cost in the UK? +

Ready-mix concrete typically costs £65-£85 per cubic metre depending on grade, location, and delivery distance. C25/30 averages £70-£75 per m³. Minimum delivery charges apply for loads under 4m³ (usually £100-£150). London and Southeast prices are 10-15% higher than Northern regions.

Do I need Building Regulations approval for concrete work? +

Structural concrete work including foundations, extensions, and load-bearing elements requires Building Control approval under Part A. Domestic driveways and patios typically don't need approval unless they affect drainage. Always check with your local authority before starting any construction project.

Can I mix concrete myself or should I use ready-mix? +

For volumes under 1m³, hand-mixing or using a cement mixer is feasible. For larger projects (over 1m³), ready-mix concrete is more economical, ensures consistent quality throughout, saves considerable time and physical effort, and provides better structural performance.

What's the difference between BS 8500 and BS EN 206? +

BS EN 206 is the European standard specifying concrete performance, production, and conformity. BS 8500 is the UK complementary standard providing additional guidance specific to British conditions, exposure classes, and construction practices. Both standards work together for UK projects.

How thick should my concrete driveway be? +

Domestic driveways for cars should be minimum 100mm thick using C25/30 concrete. For heavy vehicles or commercial use, increase to 150mm thickness with C32/40 grade. Always install on a properly prepared sub-base of minimum 100-150mm compacted MOT Type 1 or similar granular material.

How long does concrete take to cure and when can I use it? +

Concrete reaches initial set in 24-48 hours for light foot traffic. Wait 7 days before driving on driveways. Full strength develops over 28 days. Keep concrete moist during curing by covering with polythene sheeting or spraying with water, especially in hot or windy weather.

What is the minimum concrete order from ready-mix suppliers? +

Most ready-mix suppliers have minimum orders of 1-2 cubic metres, though some may deliver smaller loads with additional charges. Standard truck capacity is 6-8m³. For very small projects under 0.5m³, consider buying bagged concrete or hiring a volumetric mixer truck that mixes on-site.

Do I need reinforcement in my concrete slab? +

Driveways and patios typically use A142 or A193 mesh reinforcement placed at mid-depth. Structural slabs may require specific bar reinforcement designed by an engineer. Garage floors and shed bases benefit from mesh to control cracking. Always follow structural engineer recommendations for foundations.

What is slump and how do I specify it? +

Slump measures concrete workability. S1 (10-40mm) for very dry mix, S2 (50-90mm) for standard paving, S3 (100-150mm) for easier placement, S4 (160-210mm) for pumping. For driveways request S2, for pump work S4. Slump affects strength - don't add water on site to increase slump.

Can I pour concrete in cold weather or winter? +

Yes, but take precautions. Don't pour when temperature is below 2°C or likely to drop below freezing within 48 hours. Use insulated blankets to protect fresh concrete. Consider using rapid hardening cement or heated concrete in very cold conditions. Avoid pouring on frozen ground.