Editorial policy
Last updated:
This page explains how the calculators, converters and tool pages on kakaoCalc are written, checked and kept up to date. It applies to every page on the site, including the Korean-language calculators.
What we publish
We publish tools that answer a defined question from numbers or files you provide: calculators, unit converters, date and time tools, and text and file utilities. Each tool page says what it calculates and shows the formula or method, a worked example, its limits and its sources. We don't publish personal recommendations, product reviews, sponsored tools or paid placements.
Sources we rely on
Formulas, rates and definitions come from a primary source wherever one exists, in roughly this order:
- Laws, regulations and official publications of government agencies and tax authorities, for example the IRS, the Social Security Administration, GOV.UK, Korea's National Tax Service and the National Law Information Center.
- Standards bodies for units and measurement: NIST and the BIPM.
- Professional and scientific bodies for health and science tools, for example the CDC and ACOG, and peer-reviewed research.
- Established reference works when no official source exists.
Each page lists the sources it used under “Sources”. When a value depends on a year, such as a tax bracket or a contribution limit, the page states the year.
How a tool is checked
- The inputs, units, formula and assumptions are written down together with the sources they come from.
- The tool must pass test cases whose answers are known independently: worked examples published by the source where they exist, otherwise hand calculations.
- The page is opened in a browser at phone, tablet and desktop widths with its default values.
- Before each update of the site is published, the test cases of every tool are run again.
Dates and updates
“Last updated” on each page is the date its own content last changed. Site-wide design changes don't move it. Currency and crypto snapshots are refreshed when the site is rebuilt, and the converter shows when the snapshot was taken. When an official source publishes new figures, for example for a new tax year, the affected calculators are updated once the figures are confirmed. Until then, a page keeps naming the year its figures apply to.
Corrections
If you think a result is wrong, email wnghks0329@gmail.com with the tool name, the values you entered and what you expected. We re-run the calculation against the cited source. When an error is confirmed, the page is corrected and its “Last updated” date changes.
Independence and advertising
The site is paid for by Google AdSense ads, which are labelled “Advertisement” and kept apart from tool inputs and results. Advertisers don't choose topics, and no result is adjusted for an advertiser. kakaoCalc is not affiliated with Kakao Corp.
Limits of the tools
Results are estimates for general information. Money, tax, legal and health calculators apply the general rules shown on each page; they can't account for every personal circumstance or a later change in the rules. For decisions that matter, confirm with the official source or a qualified professional.