How we work, sourced and documented.

Who writes the content

All content is produced by the Square Footage Calculator editorial team — a small group whose backgrounds span residential construction estimating, technical writing, and software engineering. We deliberately don't attribute articles to individual named experts because none of us hold professional licenses or contractor certifications relevant to every project type covered on the site.

Where genuine professional expertise is required (real estate appraisal standards, structural calculations, HVAC sizing), we cite the relevant published standard or refer readers to a licensed professional rather than substituting our own judgment.

Primary sources we cite

Every formula, coverage rate, and waste-factor recommendation on the site traces back to one of these sources. Where multiple sources agree, we use a consensus value. Where they disagree, we present the range.

We don't use AI-generated coverage figures, made-up waste percentages, or values copied from competitor calculators without verifying them against an original source.

How content gets reviewed before publishing

1. 1Draft. One team member writes the calculator content or guide, with sources noted inline.
2. 2Source check. A second team member verifies every quantitative claim (coverage rate, waste percentage, conversion factor) against the cited source.
3. 3Math check. Calculator inputs are tested against worked examples we've already verified by hand. Edge cases (zero, very large, mixed feet+inches) are run through.
4. 4Plain-English read. A reviewer not involved in drafting reads it cold and flags anything that assumes prior knowledge.
5. 5Publish. Goes live with a publication date in the article schema.

Update cadence

• ·Quantitative content (coverage rates, waste factors, prices) — reviewed every January and July. Material specs change as manufacturers reformulate products.
• ·Standards-driven content (ANSI, BOMA, real estate practice) — reviewed when the standard issues a new revision.
• ·Geometric formulas — these don't change. Once verified, only the explanation gets refreshed if a clearer version emerges.
• ·Reader-reported corrections — verified within a week, applied to the page, and the "last updated" date is bumped.

What we don't do

Some of the practices common on calculator and affiliate sites that we deliberately avoid:

• ×No fabricated author personas. We don't invent named experts with fake credentials. The editorial team byline is what it says.
• ×No fake reviews or ratings. The calculators have no AggregateRating or Review schema because we don't collect either.
• ×No invented "Featured On" logos. If we ever get press, it'll be linked here. Until then, this section just doesn't exist.
• ×No affiliate manipulation. The calculators don't recommend specific paint brands, flooring brands, or contractors. Where we name a manufacturer, it's because that brand sets the spec we're citing.
• ×No data harvesting. The calculator inputs never leave your browser. We don't store, log, or transmit dimensions.

Corrections policy

If you find a formula error, a coverage rate that's out of date, or a measurement claim you can disprove with a source, please email us. Verified corrections are applied within a week, the "last updated" date on that page is bumped, and we credit the source where appropriate.

Significant corrections (math errors, not typos) are noted at the bottom of the affected page so readers who acted on the previous version can re-check their work.