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Seller Tools

Check product titles individually or in a CSV or Excel table, convert units and plan meetings across time zones in your browser.

Check one product title or a whole catalogue, convert a supplier’s measurements or choose a meeting time across cities. These tools work in your browser and explain the definitions and assumptions behind each result.

Choose a tool

  • Character and UTF-8 Byte Counter — compare text measurements, check a title limit and preview a shorter version.
  • Unit Converter — convert 139 units in 12 measurement types, with separate choices for definitions that are easy to mix up.
  • Time Zone Meeting Planner — compare local dates and times, check working-hour overlap and save a day’s timetable.
  • Bulk Title Length Checker — find overlong product titles in a list, CSV or Excel table, keep their original rows and export the full check.

For the work in front of you

Checking a supplier’s specification? Convert inches to millimetres, pounds to kilograms, or a named gallon to litres before comparing products. A US gallon and an imperial gallon hold different amounts, so the choice matters.

Arranging a call? Set the actual date and compare working hours across cities. The planner checks the whole meeting and flags local times that are skipped or repeated when clocks change.

Preparing a listing? Paste the title or read a plain-text file to compare visible characters, Unicode code points, UTF-16 units and UTF-8 bytes. Check your own limit or load a field-specific platform rule. A rule for Amazon.com still applies only to the market and field named beside it.

Working on a catalogue? Use the bulk title checker to connect title and SKU columns, inspect Excel values and review only the rows that need attention. Save a column mapping when you want to use the same layout next time.

Keep useful tools close

Use Favorite beside a tool to find it here next time. Favorites, recent tools and the converter’s last unit choices stay in this browser; they do not create an account or save your calculation inputs. The bulk title checker can also save column mappings when you explicitly choose to do so. The tools explain what they keep in their guides and in the privacy policy.

More tools

The wider Korean tool directory also covers selling costs, payouts, files and other calculations. Those pages and seller news currently use Korean.

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