Free Home Improvement Calculators

Why UK Homeowners Trust HomeCalc

HomeCalc.uk is a free toolkit of home improvement calculators built specifically for the United Kingdom. Every tool on this site uses UK building standards, UK material sizes, and real UK pricing data so you get results you can actually take to the builder's merchant.

Whether you are pricing up a new garden fence, working out how many roof tiles you need for a re-roof, or checking your eligibility for the Boiler Upgrade Scheme heat pump grant, HomeCalc gives you a clear, itemised answer in seconds. No account required. No email harvesting. Just the numbers you need.

Accurate by Design

Our calculators are not generic unit converters. Each one is purpose-built around the materials and methods used on real UK projects. Brick calculations use the standard UK brick size of 215 x 102.5 x 65mm with a 10mm mortar joint, exactly as specified in BS EN 771-1. Concrete calculations account for both 20kg and 25kg bag sizes commonly stocked by UK suppliers such as Wickes, B&Q, and Travis Perkins. Roofing estimates factor in standard tile coverage rates, ridge tiles, and a sensible wastage allowance.

Real UK Pricing, Updated Annually

Material prices fluctuate, so we review and update every calculator's cost data at the start of each year. Our 2026 prices reflect current trade and retail averages from major UK suppliers, giving you a realistic budget estimate before you commit to a project. We also include labour rate ranges where relevant, based on regional averages published by trade bodies and checked against live quotation data.

Built for Everyone

You do not need to be a tradesperson to use HomeCalc. Every calculator includes clear instructions, plain-English explanations, and helpful tips so that first-time DIYers and experienced builders alike can get accurate results. If you are hiring a contractor, our estimates help you sense-check quotes and avoid overpaying for materials.

Explore the full range of calculators below and find the right tool for your next project.