Created Calculators
Reviewed Calculator
Mateusz is a professional problem-solver with a lifelong passion for software development and numbers. In 2014, he launched Omni Calculator, a groundbreaking tool that allows him to accomplish his life mission: helping people make better decisions whenever calculations are needed. Today, Mateusz serves as the CEO of Omni Calculator, which attracts over 18 million visitors monthly. When he is not busy growing the business, he enjoys sports, with cycling being his favorite.
Areas of expertise
Entrepreneurship
Innovative problem-solving
Software development
Omni Calculator
Education
Jagiellonian University, Cracow, PolandMaster’s degree in Sociology (dropped out)
Professional background and credentials
Mateusz is the calculatorian *par excellence*. Constantly growth-oriented, he learned to code and built his first website in 1996 as an exchange student in the USA. Driven by curiosity, attention to detail, and love for sciences and numbers, he created Percentage Calculator (no longer available) as a side project, exploring user interactions with a dynamic, multidirectional calculation interface. In its second version, the website and its mobile app offered one general calculator and 17 smaller, more specific tools, all translated into 15 languages. The niche calculators’ performance exceeded Mateusz’s expectations, fueling his ambitions to expand further. Hence, the Omni Calculator as we know it today was born. Having participated in a startup accelerator in Berlin in 2014, he set out to “build all the calculators”.
Achievements
Omni Calculator’s rapid growth is a testament to Mateusz’s vision. The platform has skyrocketed from 20,000 monthly visits in 2016 to over 18 million in 2024, earning recognition from prestigious publications such as The Guardian, The New York Times, and National Geographic. In 2019, 2022, and 2023, Mateusz was named one of the Top 50 Most Creative Entrepreneurs by BRIEF, and in 2024, he was featured in Google for Publishers. Ultimately, Mateusz’s biggest motivation is his desire to help people all over the world solve even the most seemingly unmathematical problems, a goal he achieves every day through the tools offered by Omni Calculator.
Featured in
Mateusz Mucha, CEO of Omni Calculator; Storyteller Interviews: Startup Stories, and Lessons from Central and Eastern Europe; Apr 2021
Omni Calculator - Google for Publishers
Znamy wyniki 12. edycji rankingu 50 Najbardziej Kreatywnych Ludzi w Biznesie; BRIEF
Wielka popularność krakowskiego Omni Calculatora. Jest pierwszym serwisem obliczeniowym na świecie; Wyborcza.pl Kraków
Omni Calculator brings math to the masses; TechCrunch
Tworzy kalkulatory na każdą okazję. Kochają je w Ameryce; Wp.pl Tech
Journalists Struggling with Numbers: Here’s A Helpful Guide from Omni Calculator; Science & Digital News
Here's How Much Your Holiday Lights Are Adding to Your Electric Bill; Yahoo! Life
What to know about the 1,500-calorie diet; Medical News Today
This Calculator Makes Sure You Always Get the Most Pizza For Your Buck; Life Hacker
Standard Sunscreen Recommendations Ignore People With Larger Bodies; Self
How to Topple a Statue Using Science; Popular Mechanics
APR vs. APY: What’s the Difference?; Smart Asset
How to boil the perfect egg, according to a quantum physicist; The iPaper