What Matholio is
Matholio is an independent website of free calculators for home projects: paint, flooring, roofing, concrete, fences, decks and lumber. Each calculator turns a few measurements into the quantity you need to buy, and shows every step of the math so you can check it.
The site started in 2026 with one goal: give homeowners and DIYers a straight answer to "how much do I need?" without sign-ups, pop-ups or guesswork.
What we stand for
Show the math
Every result lists the formula and each step under it, so you can check the answer instead of trusting a black box.
Cite the numbers
Coverage rates, bag yields and waste allowances come from manufacturers and industry guidance, and each source is linked.
Round to the store
Answers come in the cans, bags, boxes and boards you can actually buy, not in fractions you cannot order.
Who builds the calculators
Matholio Editorial Team
Writes, checks and updates every calculator
Calculator pages are published under the name of the Matholio Editorial Team. Before a calculator goes live, each formula is worked by hand with sample numbers and compared with the coverage figures and guidance that manufacturers publish. The team follows the editorial policy.
Seçkin Koçak
Founder
Seçkin Koçak is a software developer who started Matholio in 2026. He designs and programs the calculators and is responsible for the site.
How the calculators stay accurate
- Every default assumption, such as coverage per gallon or waste allowance, is shown on the page and can be changed.
- Sources are listed at the bottom of each calculator.
- Pages show the date they were last reviewed.
- Reported mistakes are checked and corrected. See the editorial policy.
How Matholio is funded
The calculators are free to use. Matholio may show advertising to cover its costs. Advertisers have no say in what the calculators say or recommend.
Get in touch
Found a mistake or want a calculator we do not have yet? Email [email protected] or use the contact page.