Disclaimer

Last updated: 6 June 2026

Estimates only

The calculators on DIY Tally produce estimates based on the measurements you enter and standard industry assumptions about coverage, waste and material density. Real projects vary: surfaces are uneven, products differ, and measurements have errors. Always double-check critical quantities, read the packaging for your specific product, and where appropriate consult a qualified professional before purchasing or building.

We are not liable for purchases of too much or too little material, or for any other loss resulting from reliance on our calculators. When in doubt, round up and keep your receipts.

Not professional advice

Nothing on this site is engineering, construction, structural, safety or financial advice. For structural, load-bearing, electrical, plumbing or permit-related work, consult a licensed professional.

Affiliate disclosure

Some outbound “where to buy” links are affiliate links. If you click one and make a purchase, we may earn a commission at no extra cost to you. As an Amazon Associate we may earn from qualifying purchases. We only suggest products that are genuinely relevant to your project, and affiliate relationships never affect the numbers our calculators produce.

Contact

Spotted an inaccuracy? Please tell us at hello@diytally.com so we can fix it.