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Intl Locale Format Explorer

Process intl locale format explorer locally with complete copy/download and explicit rules.

intl-locale-format-explorerLOCAL WORKSPACE

Enabling local controls…

Inputs and settings

Processed in this tab without uploading or storing inputs. Each text field is limited to 32 KiB and complete output to 1 MiB; additional format and model limits apply.

Results

Review the settings and run. Editing inputs clears old results.

Processing model and limits

Explore number/currency/parts, date, relative day, list and plural outputs. Date presets use dateStyle/timeStyle (at least one); custom mode accepts only weekday/era/year/month/day/hour/minute/second/dayPeriod/fractionalSecondDigits/timeZoneName JSON with Intl values, never styles. dayPeriod needs a 12-hour hour; fractions need second. Inactive mode fields are retained and ignored. Choose an explicit IANA zone and hour cycle; default UTC/full/short stays reproducible. Copy executable Intl/Temporal snippets; Temporal requires native support or a separately installed polyfill. date-fns v4 + @date-fns/tz examples support six listed Gregorian/Latin locales without extensions; unsupported options produce a reason, never an assumed ICU equivalent. Reuse exact-decimal Intl formatting (≤20 fractional digits, ±10^15); plural uses IEEE754. Currency syntax only, no conversion/quote. Runtime CLDR/ICU/tzdb varies. Each text field is limited to 32 KiB; complete output to 1 MiB. Runs in a one-second local Worker, with no network requests.

Data and model checked: ToolHubEN source controls ↗ECMA402 internationalization ↗

How to use this tool

Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.

When not to use it

Explore number/currency/parts, date, relative day, list and plural outputs. Date presets use dateStyle/timeStyle (at least one); custom mode accepts only weekday/era/year/month/day/hour/minute/second/dayPeriod/fractionalSecondDigits/timeZoneName JSON with Intl values, never styles. dayPeriod needs a 12-hour hour; fractions need second. Inactive mode fields are retained and ignored. Choose an explicit IANA zone and hour cycle; default UTC/full/short stays reproducible. Copy executable Intl/Temporal snippets; Temporal requires native support or a separately installed polyfill. date-fns v4 + @date-fns/tz examples support six listed Gregorian/Latin locales without extensions; unsupported options produce a reason, never an assumed ICU equivalent. Reuse exact-decimal Intl formatting (≤20 fractional digits, ±10^15); plural uses IEEE754. Currency syntax only, no conversion/quote. Runtime CLDR/ICU/tzdb varies. Each text field is limited to 32 KiB; complete output to 1 MiB. Runs in a one-second local Worker, with no network requests.