SmartBio
About SmartBio
Last updated: July 2026
SmartBio (smartbio.live) is a free collection of calculators and unit converters for everyday practical questions: how much paint for a room, how many plants for a hedge, what size air conditioner, how much meat for a barbecue. No signup, no app, nothing to install.
What this site is
Around 190 calculators plus a set of unit converters and image tools, each available in English and Italian. Every tool answers one specific question with a number you can act on — how much to buy, what size to choose, what it will cost — instead of a long article that ends in "it depends".
How the numbers are worked out
Each calculator shows its own formula on the page, under "How it works", so you can check the reasoning instead of trusting a black box. The rules come from standard trade practice, manufacturer coverage figures and published guidance. Where a value genuinely varies — wind, insulation, how absorbent a wall is, how long the grill stays open — we give a realistic range and say what changes it, rather than inventing a precision that does not exist.
Why it exists
The site grew out of hands-on work in decorating and home renovation, where the same questions come back on every job: how many litres, how many boards, how many bags. The answers were always scattered across forums and sales pages. SmartBio puts each one behind a single field you fill in, and gives the number first.
What it is not
These are planning estimates, not professional surveys or certified measurements. For structural, electrical, gas or medical decisions, ask a qualified professional. Always measure your own space before buying materials, and keep a margin for waste and cuts.
How the site is funded
Everything is free to use. Some calculator pages link to Amazon as an affiliate, and advertising may be displayed. Neither changes the result of a calculation: the number you see is the number the formula produces, and no product ever pays to appear as a recommendation.
Contact
Found a formula that looks wrong, or want a calculator that does not exist yet? Write to info@smartbio.live — corrections are welcome and get fixed.