Time Calculatorby Cardamon
Dmitrii Kargashin

Dmitrii Kargashin

Founder, Cardamon Inc

Dmitrii Kargashin is the solo founder of Cardamon Inc and the developer behind Time Calculator. He builds and ships his products end to end, from the first idea to deployment, and he wrote the calculation engine that runs the same way here on the web as it does in the Android and iOS apps. Before going solo he led engineering teams and built large-scale enterprise systems used by thousands of people. He works across the stack in TypeScript, Node, Vue 3, and PostgreSQL.

What Dmitrii builds

Everything ships under his Cardamon brand. Time Calculator is the calculator you are using now, on the web and in the Android and iOS apps. He also builds:

  • JSON Copilot — an LLM-assisted JSON tool that explains, transforms, and validates JSON for people who do not write code.
  • noHuman Team — a platform that turns AI agents into collaborative startup teams with real roles and tools.

Before Cardamon

Dmitrii did not start out solo. He spent years in enterprise engineering, where he led and mentored several development teams and built core modules for a high-load product and workflow system used by thousands of people, with an estimated commercial value in the tens of millions of dollars. He automated dozens of business processes, cut a document approval cycle by roughly ten times, and helped reshape how whole departments worked.

Why Time Calculator exists

Most time calculators make you convert everything to minutes first. Dmitrii built Time Calculator so you can type a duration the way you say it, like 5h 30m + 2h 15m, and read the answer straight off. The same calculation engine runs here in the browser and inside the Android and iOS apps, so the numbers always match, down to the millisecond.

Find Dmitrii elsewhere

Written by Dmitrii

He writes and maintains every guide on this site. Read the time-math guides or browse the unit converter.

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