About OhMyUnit

OhMyUnit is a small collection of free, browser-based unit converters focused on niche topics that are not well covered by Google's built-in conversion widget. Every tool runs locally in your browser — no uploads, no account, no usage limit.

Who runs it

OhMyUnit is operated by an independent web developer based in South Korea. The site was built to scratch a personal itch: the few cup-to-gram and ring-size converters online either used wrong reference data or were buried under aggressive ads.

How it's funded

The site shows ads served by Google AdSense. Ads are clearly labelled and never inserted in a place that interferes with the converter itself. Revenue covers the domain, occasional analytics tooling, and a small amount of time spent maintaining the data tables.

Open about how it works

Each converter is a small JavaScript function that you can inspect with your browser's developer tools. Reference tables (cooking ingredient weights, ring sizes, shoe sizes, etc.) are stored as plain JSON files. The conversion code has zero runtime dependencies.

Contact

Questions, feedback, or corrections to a chart: hello@ohmyunit.app.