PRACTICAL JAPAN HELP

Japanese form and format tools

Stuck on a Japanese form? Paste the exact field or error. Get the next step.

1

Paste the Japanese textA field label, an error, or both.

COMMON ERRORSCOMMON FIELDS

Paste only the relevant form text to get a clear next step.

Private by default. Matching runs in this browser against curated rules.

MORE TOOLS

One problem. One clear tool.

Name converterKatakana, hiragana and character widths

Form error decoderUnderstand Japanese validation messages

Form field decoderKnow what common Japanese fields require

Width converterFull-width and half-width text

Character counterCheck Japanese form limits

Era converterReiwa, Heisei, Showa and Western years

Date converterCommon Japanese form date formats

Address formatterClean and international address formats

Postal code lookupPrefecture, municipality and area

Phone formatterDomestic and +81 international formats

PRACTICAL GUIDES

Understand the rule, then fix the field.

Why won’t a Japanese website accept my name?Fix script, width, spacing, order, and registered-name mismatches.What does 全角 mean?See full-width and half-width examples for Japanese forms.Enter a foreign name on Japanese formsMatch 姓, 名, セイ, メイ, フリガナ, and Latin fields.

Browse all six guides