Disclaimer

Last updated: 10 November 2026

Calculator results are estimates

Our calculators use standard geometry and typical published figures for material density, bag yield and coverage. Actual products differ: two bags of the "same" concrete or two tins of paint can cover different amounts. Gravel and soil weights change with moisture. Check the product label, measure carefully, and consider buying a little extra — or confirm returns are allowed for unopened items.

Not professional advice

Nothing on EnoughCalc replaces advice from a qualified engineer, builder or local building authority, especially for structural, load-bearing, drainage, electrical or gas work.

Advertising and affiliate links

EnoughCalc is free because it shows advertising. Some links may in future be affiliate links, meaning we may earn a small commission if you buy through them, at no extra cost to you. Affiliate links will be clearly labelled, and they never change calculator results.