About Renovimo
Fewer trips to the merchant
Renovimo is a set of free construction calculators that turn measurements into a shopping list you can act on. No account, no paywall, no spreadsheet — enter the dimensions, get a practical quantity.
Why it exists
Most material estimates fail in the same two places. Either the calculation stops at square metres and leaves you doing pack arithmetic in the aisle, or it quietly pads the number so heavily that you finish the job with half a pallet of leftovers.
Renovimo was built to close that gap. Each calculator takes the measurements you can actually get with a tape — wall runs, ceiling sizes, slab depths, roof pitches — and works forward through coverage rates, product sizes and a waste allowance you control. What comes out is the quantity to order, expressed in the units the merchant sells.
How the estimates are produced
Every tool runs entirely in your browser. Nothing you type is uploaded, stored or attached to you, which is also why there is no account to create. The inputs stay on your device and the result appears immediately.
The underlying figures come from published coverage rates and standard product sizes — litres per square metre, sheets per pack, bags per cubic metre, rolls per drop. Where a material has a common range rather than one fixed rate, the calculator exposes it as an input instead of picking for you, so you can match the specification on the tin in front of you.
What Renovimo is not
It is not a substitute for a professional. These calculators do not see your site, your substrate, your access, your local building regulations or the tolerance the manufacturer expects. Structural work in particular — anything load-bearing, anything that will be inspected — needs a qualified engineer or tradesperson, not an online estimate.
Treat the output as a well-informed starting point for a conversation with your supplier, and confirm the final order before it goes on a truck. The full wording is in the terms of use.
Where it is going
The set grows as materials get covered properly rather than quickly — a calculator ships when its coverage rates, pack sizes and edge cases have been checked, not when the form looks finished. If a tool you need is missing, or one of the existing ones disagrees with what your supplier quoted, that feedback is genuinely useful. Tell us about it.
How we count
Four rules behind every calculator
Whole packs, not raw area
Suppliers sell cans, boxes, sheets, bags and rolls — not square metres. Every calculator converts your area into the units you actually put in the trolley and rounds up to complete packs.
Openings come off the total
Doors, windows and excluded areas are subtracted where it matters, so a wall with three windows is not priced as a solid wall.
Waste is a setting, not a secret
You choose the cutting allowance. It is applied before rounding, and the result shows what the allowance changed — no hidden multipliers baked into the answer.
The supporting supplies too
Primer, adhesive, grout, spacers, profiles, tape, screws and reinforcement are listed alongside the main material, because those are the items people forget.
Start with the material you are buying next
All 10 calculators are free, work in feet or metres, and need nothing more than a tape measure.