Trade & DIY Calculators
Quick, accurate estimates for your next job — paint, adhesive, sealant, concrete and more. Switch units on any field (mm / cm / m), then grab the materials at trade prices.
How the calculators work
Every calculator gives a materials estimate you can act on straight away, with a link to the matching range at Securadeal. Results are guides — always check the coverage and specs printed on the product you buy, and allow a little extra for wastage and offcuts. For electrical and structural work, have a qualified professional sign off.