About HomeChisel

Built by a homeowner who got tired of guessing

Free home improvement calculators, built honestly, tested against real projects, and updated regularly.

Free calculators

20+

In-depth guides

Forever — no signup

The story behind HomeChisel

It started with a paint job. I was repainting our living room and stood in the hardware store aisle holding two gallons, wondering if I needed a third. The store calculator on my phone wanted my email. The next one had three pop-up ads. The third gave me an answer that turned out to be wrong by half a gallon.

Two trips back to the store later, I had my answer — and a frustration that wouldn't go away. Why is something this simple this hard? Why does every free tool online want your data, your inbox, or your money before it'll do basic math?

So I built HomeChisel. One calculator at a time. The tools I wished existed when I was standing in that aisle.

What we believe

Accuracy is non-negotiable

Every formula is sourced from industry standards, building codes, or manufacturer data. No guesswork.

Free means free

No paywalls. No mandatory signups. No "premium" features hiding the answer.

Brand-neutral, always

We don't take payment to recommend specific brands. The math works the same whether you buy Behr or Benjamin Moore.

Real homes, real testing

Every calculator is validated against actual projects before it goes live. We use these tools ourselves.

How we build our calculators

Every HomeChisel calculator goes through the same process. We don't build a calculator unless we can show our work.

1. Research the standard

We pull formulas from primary sources: the IES Lighting Handbook for spacing, paint manufacturer technical sheets for coverage rates, building code documentation for concrete and slab calculations.

2. Build for the most common scenarios

Calculators are designed around real projects — repainting a bedroom, tiling a bathroom, lighting a kitchen — not edge cases that confuse users.

3. Test against real measurements

Before any calculator goes live, we cross-check the output against actual hardware store purchases and pro estimates.

4. Update when standards change

We review every calculator quarterly and update formulas when industry standards or product specs change.

Found something wrong? Tell us.

HomeChisel is a one-person project. If a calculator gives you a result that doesn't match reality, or if a guide has outdated info, we want to know. Corrections are taken seriously and applied within days.

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