{ "category": "Compatibility", "display_name": "JIS", "entry_kind": "built_in_function", "eval_api": { "method": "POST", "url": "https://handbook.dnacalc.com/api/eval" }, "function_id": "FUNC.JIS", "implementation_state": { "answer_bank": { "excel_builds": [ "20527" ], "larger_numeric": 0, "last_bit": 0, "matched": 0, "other_mismatch": 0, "refused": 8, "rows": 8, "unread": 0, "worst_ulp": 0 }, "detail": "Excel 16.0 build 20527 on Windows gives #NAME? for JIS, so the catalogue holds no row for it.", "dnacalc_commit": "9e1884369a678158dd82d3d74188daf986995e87", "in_catalogue": false, "state": "refuses", "state_label": "Refuses or not implemented", "summary": "Not implemented; recorded Windows Excel does not have it either", "workbook_corpus": { "cells": 1, "matched": 1 } }, "implementations": [], "json_url": "https://handbook.dnacalc.com/api/functions/FUNC.JIS.json", "name": "JIS", "notes": [], "schema": "efh.function-reference/v1", "section_order": [ "what-it-does", "try-it", "quirks", "how-to-implement", "version-differences", "alternatives" ], "sections": { "alternatives": "\n[DBCS](FUNC.DBCS.md) is the other documented name for conversion to full-width forms; [ASC](FUNC.ASC.md) performs the opposite width direction.\n\n\n", "how-to-implement": "\nChoose the language-specific mapping first, then scan text with a table of supported half-width letters and kana. Handle voiced kana sequences as the mapping requires and leave unrelated characters intact. Preserve UTF-16 text and invalid-text policy rather than counting encoded bytes. A whole-string NFKC call is not a substitute: it changes a broader class of characters and converts compatibility forms in another direction. The exact mapping outside the documented Japanese examples needs locale-specific evidence.\n\n\n", "quirks": "\n“Single-byte” and “double-byte” describe legacy character-width conventions here, not UTF-8 byte lengths. This is not a generic Unicode normalization operation. The current Windows-oriented catalogue exposes DBCS for the width conversion and does not supply an executable JIS entry; locale/name resolution is part of the missing context.\n\n\n", "sources": "\n- [Microsoft: JIS function](https://support.microsoft.com/en-us/excel/functions/jis-function), opened 6 November 2026; syntax, documented argument rules and errors.\n- [DnaCalc implementation](https://github.com/DnaCalc/DnaCalc/blob/da3ecc4fb19a3a5529708c311d0e8f05688ac165/crates/calc-func/src/catalogue/text_format.rs); implementation steps and the limits identified in the text.\n\n", "try-it": "\nUnder the documented Japanese mapping, `=JIS(\"abc\")` produces full-width `ａｂｃ`. A string containing only characters outside the half-width conversion set is retained. The preview returns `#NAME?` because its engine does not resolve this spelling; that support limit is not a reading from Excel.\n\n\n", "version-differences": "\nNo same-input comparison between named Excel builds is recorded for this function here. The documented behaviour below is not a measurement of every Excel release.\n\n\n", "what-it-does": "\n`JIS(text)` is the language-dependent width-conversion name documented for changing half-width English letters or katakana to full-width forms. The function name and supported character transformations depend on Excel’s language settings.\n\n\n" }, "signature": { "display": "JIS(text)", "parameters": [ { "description": null, "name": "text", "optional": false, "repeats": false } ], "trailing_repeats": false }, "sources": { "metadata": { "admission": { "label": "not_implemented", "reason": "Excel 16.0 build 20527 on Windows gives #NAME? for JIS, so the catalogue holds no row for it." }, "arity": { "max": 1, "min": 1 }, "category": "Compatibility", "classification": { "arg_preparation_profile": "ValuesOnlyPreAdapter", "coercion_lift_profile": "None", "determinism_class": "Deterministic", "error_collapse_profile": "None", "fec_dependency_profile": "Composite", "host_interaction_class": "ApplicationState", "kernel_signature_class": "Custom", "rich_value_usage": "RichBlind", "surface_fec_dependency_profile": "Composite", "thread_safety_class": "HostSerialized", "volatility_class": "NonVolatile" }, "descriptions": { "long": null, "short": "Text with half-width (single-byte) characters turned into their full-width forms", "short_source": "dna-calc-own" }, "docs": { "english_description": "Changes half-width (single-byte) characters within a string to full-width (double-byte) characters", "microsoft_url": "https://support.microsoft.com/en-us/office/jis-function-b72fb1a7-ba52-448a-b7d3-d2610868b7e2" }, "entry_kind": "built_in_function", "localized_family_names": null, "localized_names": [ { "locale": "ar-SA", "name": "JIS" }, { "locale": "bg-BG", "name": "JIS" }, { "locale": "cs-CZ", "name": "JIS" }, { "locale": "da-DK", "name": "JIS" }, { "locale": "de-DE", "name": "JIS" }, { "locale": "el-GR", "name": "JIS" }, { "locale": "en-AU", "name": "JIS" }, { "locale": "en-GB", "name": "JIS" }, { "locale": "en-US", "name": "JIS" }, { "locale": "es-ES", "name": "JIS" }, { "locale": "et-EE", "name": "JIS" }, { "locale": "fi-FI", "name": "JIS" }, { "locale": "fr-FR", "name": "JIS*" }, { "locale": "he-IL", "name": "JIS" }, { "locale": "hr-HR", "name": "JIS" }, { "locale": "hu-HU", "name": "JIS" }, { "locale": "id-ID", "name": "JIS" }, { "locale": "it-IT", "name": "JIS" }, { "locale": "ja-JP", "name": "JIS" }, { "locale": "ko-KR", "name": "JIS" }, { "locale": "lt-LT", "name": "JIS" }, { "locale": "lv-LV", "name": "JIS" }, { "locale": "nb-NO", "name": "JIS" }, { "locale": "nl-NL", "name": "JIS" }, { "locale": "pl-PL", "name": "JIS" }, { "locale": "pt-BR", "name": "JIS" }, { "locale": "pt-PT", "name": "JIS" }, { "locale": "ro-RO", "name": "JIS" }, { "locale": "ru-RU", "name": "JIS" }, { "locale": "sk-SK", "name": "JIS" }, { "locale": "sl-SI", "name": "JIS" }, { "locale": "sr-Latn-RS", "name": "JIS" }, { "locale": "sv-SE", "name": "JIS" }, { "locale": "th-TH", "name": "JIS" }, { "locale": "tr-TR", "name": "JIS işlevi" }, { "locale": "uk-UA", "name": "JIS" }, { "locale": "vi-VN", "name": "JIS" }, { "locale": "zh-CN", "name": "JIS" }, { "locale": "zh-HK", "name": "JIS" }, { "locale": "zh-TW", "name": "JIS" } ], "signature": { "display": "JIS(text)", "parameters": [ { "description": null, "name": "text", "optional": false, "repeats": false } ], "trailing_repeats": false }, "surface_name": "JIS", "version_marker": null, "xlcall": null }, "microsoft": "https://support.microsoft.com/en-us/office/jis-function-b72fb1a7-ba52-448a-b7d3-d2610868b7e2" }, "try_it": { "formula": "=JIS(\"abc\")", "note": "This spelling is not registered in the OneCalc preview engine, so calculation returns #NAME? here. See the function guide for Excel availability.", "preview_status": "worksheet-error" }, "url": "https://handbook.dnacalc.com/functions/JIS.html", "variants": [], "versions": [] }