Gold & Silver Price Calculator: Live Rates by Weight
Our free gold and silver price calculator tells you precisely what your gold or silver is worth at the live spot price, regardless of weight or unit. This…
The Utilorax Blog
Guides, tips and explainers to help you get more from our free calculators and converters.
Latest articles
What Is My Credit Card Payoff Date & Total Interest Cost
Your credit card payoff date is the day the balance finally hits zero, and that date changes every time you add a charge or make a payment. This piece sho…
Simple Interest Formula Explained with Examples
The simple interest formula is I = P x r x t, where t is in years. Here’s how it works, what it’s for, and where people usually go wrong.
PSI to Bar: The Tyre Pressure Conversion, Explained
You’ll recognise the problem: a tyre sidewall in psi and your car’s manual in bar. To convert psi to bar, multiply by 0.06895. That’s all it takes. This g…
What a 13 Digit Barcode Actually Tells You
A 13-digit barcode isn’t just a random string of numbers; it’s a tidy little map of who registered the product and whether the number itself is even corre…
MM to Inches: How to Convert It in Your Head
Need to convert mm to inches in your head? Divide millimetres by 25.4. Here’s how to do it without a calculator, what the trick is, and where it matters m…
Status Code Checker: What the Server Is Actually Telling You
A status code checker tells you exactly what the server is saying in its response. This guide explains what those three-digit numbers mean, how to read th…
QR Code Reader Online: Scan Any Code Without an App
Need to scan a QR code without installing anything? A web-based QR code reader does the job. Here’s how they work, where they’re useful, and why they beat…
How to Simplify Ratios Easily (Free Ratio Calculator)
Stuck with a ratio? Use our free simplify ratio calculator—it reduces any ratio to its lowest terms and gives the decimal in one click. This guide explain…
About the blog
The tools on this site give you an answer. These articles explain the answer — what the number actually means, how it is worked out, and where it stops being useful. Most were written because a calculator alone was not enough: knowing your BMI is not the same as knowing what BMI does and does not measure, and seeing a monthly payment is not the same as seeing how much of it is interest.
Every guide is built around a tool you can use on the spot, works the maths through with a real example, and links to the sources it relies on so you can check them yourself. Where a figure is an estimate, or depends on your country, your lender or your doctor, the article says so rather than pretending otherwise. Nothing here is financial or medical advice — it is the explanation that should come with the number.