About vixutil

What this site is

There are 146 calculators that turn numbers into an answer, and more than 100 reference sections for looking values up. They range from money — take-home pay, loan interest, severance — to the things you normally have to hunt through a table for: colour names, unit conversions, screw sizes, paper formats.

Everything happens on a single web page. There is no app to download and no account to create. If you use one tool often, bookmark its address and the same screen opens next time.

What you type never leaves your browser

Every calculation runs inside your own browser. You can enter a salary, a loan amount, your height and weight — the kind of numbers you would not want to show anyone — and none of it is sent to a server.

Because nothing is sent, there is nothing to store. No history of calculations is kept anywhere, which means we cannot know what you calculated either.

Where the numbers come from

When a value is not ours to decide — a tax rate, a contribution rate, a standards table — the page says where it came from. A number without a source is most dangerous exactly when it looks most convincing.

Anything we could not verify is asked for as an input rather than invented. If a rate differs by region, "enter the figure you know" is more honest than presenting one region's number as if it applied everywhere.

Figures that change yearly are kept in one place

Minimum wage, insurance contribution rates, tax brackets — figures that are re-announced every year sit inside dozens of calculators. Scattered, nobody knows what to check when the year turns, and a stale figure keeps producing a plausible-looking amount.

So there is a single list recording which calculation holds which figure and on what authority. When the year turns we read that list from top to bottom, check each figure against its source again, and fix whatever moved.

Ten languages

The site is published in Korean, English, Spanish, Portuguese, Japanese, German, French, Hindi, Simplified Chinese and Traditional Chinese.

Machine translation is not pasted in as-is; the wording is written separately for each language. Simplified and Traditional Chinese are kept as two separate sets, because they differ in word choice and not only in glyphs.

Who makes it

One person builds and runs it. This is not a company or a team.

Running costs are covered by advertising. Ads are placed where they do not cover the content, and nothing is ever built so that you must click an ad to see a result.

If something is wrong, or a tool you need is missing, tell us through the contact page. Several things here were fixed because a reader wrote in.