About Calqura
Calqura makes calculators that help people make better everyday decisions about money, health, time, and the work that goes into a build. Each tool is made for one thing: a clear, honest answer in seconds, on any device, with no paywall and no signup.
Who runs it
My name is K Butler, and I build and maintain Calqura from Fort McMurray, Alberta. My background is 35 years in the trades — construction sites and horizontal directional drilling (HDD) — where getting a number wrong has a real cost: a short concrete pour, a load of gravel too many, or a bore that runs out of drilling fluid halfway across a road. I got tired of calculators that buried a simple answer under ads, made you guess at the formula, or quietly used assumptions they never showed you. So I started building my own, and the construction tools here are the ones I field-check against jobs I have actually done.
That same standard carries over to the finance and health calculators. The goal is never to be clever — it is to give you the number a careful professional would give you, and to show enough of the working that you can trust it or check it yourself.
Why Calqura exists
Most calculator sites optimize for clicks, not answers. They spread a ten-second calculation across three pages, hide the math, and treat you as traffic rather than someone trying to make a decision. Calqura is the opposite: one page, one answer, the formula shown, and a plain-English explanation of what the result actually means for you. Every tool works on a phone on a job site or a laptop at the kitchen table, with no account and no upsell.
Editorial standards
Every calculation on Calqura is backed by a hand-checked test suite — hundreds of cases run on every change, so the math you see is the math we have verified. Where an authority sets the standard, we follow it and say so: mortgage and loan tools follow U.S. Consumer Financial Protection Bureau (CFPB) conventions, fitness and calorie tools use the American College of Sports Medicine (ACSM) and Mifflin-St Jeor formulas, and the construction tools use standard industry densities and yields, with the formula printed on the page. When a number depends on an assumption — a waste percentage, an interest compounding method, a material density — we expose it as an input you can change rather than hiding it.
Articles on the blog are written from hands-on experience and link to the calculator that does the math, so you can read the reasoning and then run your own numbers. Posts carry a byline and a publish date, and we update them when the underlying guidance changes.
How Calqura stays free
We support Calqura with unobtrusive ads and, on some pages, affiliate partnerships with lenders and financial services. We never take money to skew a calculator's output — the math is identical whether an affiliate link is on the page or not.
Contact
Found a bug, disagree with a formula, or want a calculator that doesn't exist yet? I read every message. Email [email protected] — I aim to reply within a few business days, and corrections go to the front of the line.
Results are estimates for educational use only, not financial, medical, or legal advice.