Everyday tasks, made simpler.
TIERHOT offers free random selection tools, date and time calculators, text utilities, unit conversion and ratio calculations. Open a tool, enter your values and press its large action button. No account or installation is required.
Clear results and explanations
Each tool includes its calculation method, examples, a diagram, an actual example screen and answers to common questions. Dates use the calendar conventions stated on each page. The Lotto tool follows Korean 6/45 rules. Personal daily numbers use Korea time (UTC+9) and symbolic interpretations.
Available in English and Korean
Choose a language using the link at the top of each page. The same tool has a separate address in each language. The site does not redirect you based on your location or browser language.
Inputs stay on your device
Calculations, names, birth dates and generated passwords are processed in your browser. These tools do not call an external AI service. See the privacy policy for clipboard, sharing and hosting details.