KWD vs RTF — Comparison & Free Converter
Fast, instant KWD (KWORD) to RTF conversion. No signup required. Just drop your .kwd file and get .rtf in seconds.
Batch Settings
KWDファイルは、かつて日本で広く利用されたワープロソフト「一太郎」で作成された文書に多く見られます。しかし、現代のビジネス環境や学術分野では、より汎用性の高いRTF形式が主流です。このページでは、大切なKWDファイルを、多くのアプリケーションで編集・閲覧可能なRTF形式へ、手軽に変換する方法をご紹介します。長年培われた文書資産を無駄にすることなく、現代のデジタルワークフローにスムーズに統合できるよう、シンプルな手順でサポートいたします。文字化けの心配をせずに、過去の資料を活かしたい方、異なる環境の相手と確実に文書を共有したい方に最適なツールです。大切なあの日の思い出や、苦労して作り上げた論文も、これで安心して次世代へ引き継げます。
- 古い一太郎文書をWordで編集
- 同人誌原稿の共同作業
- 縦書きレイアウトの保持
日本では、一太郎の普及率が高かったためKWDファイルが数多く存在します。RTF変換により、縦書きなどの日本語特有の組版も比較的保持しやすい利点があります。
About KWD (KWORD) to RTF Conversion
KWD or RTF — which format should you use? The answer depends on your needs. Here's a quick breakdown.
KWD is a widely used file format. It has common platform support. RTF (Rich Text Format) supports basic formatting and is readable across word processors. It has universal platform support.
So when should you convert KWD to RTF? This conversion is ideal when you When you need a RTF file. This conversion helps you convert between formats quickly.
Converting KWD to RTF maintains high quality with CocoConvert's optimised encoder settings.
If you've decided RTF is the right choice, CocoConvert makes the conversion effortless. Upload your .kwd file, pick RTF, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert KWD (KWORD) to RTF
- 1
Choose your KWD file
Upload your .kwd file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to RTF
Select .rtf from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large document files.
- 4
Get your RTF file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert KWD (KWORD) to RTF
Your KWD file is decoded and re-encoded as RTF.
Your KWD file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in RTF format
The converted file is ready for download
Format Comparison
KWD (KWord)
.kwd file
| Extension | .kwd |
| MIME Type | application/x-kword |
| Category | Document |
RTF
.rtf file
| Extension | .rtf |
| MIME Type | application/rtf |
| Category | Document |
Should You Convert KWD (KWORD) to RTF?
When to Convert
- ✓When you need a RTF file
Frequently Asked Questions
Should I use KWD or RTF?
It depends on your goal. KWD preserves full quality. RTF preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is RTF higher quality than KWD?
Not necessarily. Converting KWD to RTF maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert KWD to RTF on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for KWD to RTF?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for KWD to RTF?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.