Founder & Developer · calculations.tools
I'm a developer with a degree in Business and Economics and a genuine passion for data analytics. For years I've spent my spare time analyzing stocks and companies - not professionally, just because I love crunching the numbers. That habit of digging into data, spotting patterns, and making sense of complex information has shaped how I build things.
Calculations.tools grew out of a personal frustration: too many online tools are engineered to extract value from users rather than provide it. I built this site to be the opposite - a resource that genuinely helps people with everyday tasks and stays free indefinitely. Every calculation runs locally in your browser; nothing is transmitted to any server.
Before my career in tech, I was a professional hockey player competing in Denmark and Germany. The discipline and focus that come with professional sport translate directly into how I approach development - methodical, detail-oriented, and built for the long game.
Outside of work I travel with my family, hike in the mountains, and explore Scandinavian nature with my wife.
A selection of tools from the site - all free, no account required.
Calculate percentages, changes, and differences instantly.
The most-searched temperature conversion, with reference table.
Body weight conversion with a full reference table.
Road distance and running conversion with exact factor.
Live mid-market rates for 150+ currencies.
Body mass index for adults with WHO category ranges.