About KalqoHub

KalqoHub is a free library of online calculators for money, health, math and everyday conversions. It was founded by Turki Alshammari and is run from Saudi Arabia, serving readers around the world.

Why I built KalqoHub

Like most people, I reach for an online calculator whenever I face a real decision: comparing two loan offers, checking what a monthly payment will look like, or converting a recipe. Too often, the tools I found were buried under pop-ups, slow to load on a phone, or gave a single number with no explanation of where it came from.

A number you can't check is hard to trust. So I set out to build the calculator site I wanted to use myself: fast, clean, free, and open about how every answer is worked out.

What makes KalqoHub different

Every calculator shows its result instantly, then explains the formula it uses and walks through a worked example, so you can follow the math and confirm the answer. Each tool is tested against known reference values before it goes live, and every page is designed for small screens first, because that's where most people need a quick answer.

Alongside the calculators, our guides explain the ideas behind the numbers, from how mortgage payments are built to how BMI is calculated and where it falls short.

Our standards

We use standard, published formulas, such as the amortization equation lenders use and the Mifflin-St Jeor equation dietitians use. When a result is an estimate, we say so. Our calculators are for general information and never replace advice from a qualified professional; see our disclaimer for details.

What's next

KalqoHub is growing. Construction, real estate, business, education, engineering, tax and cryptocurrency calculators are on the way. If there's a tool you need, or you spot something we can improve, I'd genuinely like to hear from you.

Get in touch

Email yutturki6@gmail.com or use the contact page.

Advertising

KalqoHub is free to use and is supported by advertising. Sponsored content is always labeled, and it never changes how a calculator works.