About Us
Online Rekenmachine was built with one goal: giving everyone access to reliable, free calculation tools โ no installation, no account, no hassle.
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Our mission
Calculations around money, health and everyday decisions shouldnโt be complicated. Our mission is to offer a calculator for every question โ from mortgage payments to BMI, from VAT to crypto profit โ that gives an instant, correct and understandable answer, along with an explanation of how that answer was reached.
What we offer
Hundreds of calculators across categories like finance, health, math, tax, construction, education, conversion, date & time, everyday tools and crypto. Every calculator includes a formula explanation, a step-by-step breakdown and FAQs, so you get more than just a number โ you understand where it comes from.
Independent and free
All of our calculators are and will remain free to use. We display advertising to keep the platform running, but this never influences the accuracy or independence of our calculations.