3 MB sample files
A 3,145,728-byte file, 3 MB in binary units. Available in 53 formats.
Download a 3 MB file
Each file is exactly 3,145,728 bytes and is a valid file of its format. Any of them works as a 3 MB dummy file or test file.
| File | Format | Size | Contents | Download |
|---|---|---|---|---|
| 3 MB Avro samplesample-avro-3mb.avro | Avro | 3 MB3,145,728 bytes | Records: 25,459 | Download Avro |
| 3 MB BIN samplesample-bin-3mb.bin | BIN | 3 MB3,145,728 bytes | Incompressible pseudo-random bytes | Download BIN |
| 3 MB BMP samplesample-bmp-3mb.bmp | BMP | 3 MB3,145,728 bytes | Dimensions: 1182 × 886 px | Download BMP |
| 3 MB CSS samplesample-css-3mb.css | CSS | 3 MB3,145,728 bytes | Rules: 31,777 | Download CSS |
| 3 MB CSV samplesample-csv-3mb.csv | CSV | 3 MB3,145,728 bytes | Data rows: 23,426 | Download CSV |
| 3 MB DOCX samplesample-docx-3mb.docx | DOCX | 3 MB3,145,728 bytes | Embedded image: 1176 × 881 px | Download DOCX |
| 3 MB EML samplesample-eml-3mb.eml | EML | 3 MB3,145,728 bytes | Paragraphs: 9,403 | Download EML |
| 3 MB EPUB samplesample-epub-3mb.epub | EPUB | 3 MB3,145,728 bytes | Chapters: 12 | Download EPUB |
| 3 MB FLAC samplesample-flac-3mb.flac | FLAC | 3 MB3,145,728 bytes | Duration: 17.8 s | Download FLAC |
| 3 MB GeoJSON samplesample-geojson-3mb.geojson | GeoJSON | 3 MB3,145,728 bytes | Features: 16,781 | Download GeoJSON |
| 3 MB GIF samplesample-gif-3mb.gif | GIF | 3 MB3,145,728 bytes | Frames: 36 | Download GIF |
| 3 MB glTF samplesample-gltf-3mb.gltf | glTF | 3 MB3,145,728 bytes | Triangles: 130,050 | Download glTF |
| 3 MB GPX samplesample-gpx-3mb.gpx | GPX | 3 MB3,145,728 bytes | Track points: 31,114 | Download GPX |
| 3 MB GZ samplesample-gz-3mb.gz | GZ | 3 MB3,145,728 bytes | Expands to 26,647,183 bytes | Download GZ |
| 3 MB HTML samplesample-html-3mb.html | HTML | 3 MB3,145,728 bytes | Sections: 3,905 | Download HTML |
| 3 MB ICS samplesample-ics-3mb.ics | ICS | 3 MB3,145,728 bytes | Events: 9,218 | Download ICS |
| 3 MB INI samplesample-ini-3mb.ini | INI | 3 MB3,145,728 bytes | Sections: 26,548 | Download INI |
| 3 MB JPG samplesample-jpg-3mb.jpg | JPG | 3 MB3,145,728 bytes | Dimensions: 2781 × 2086 px | Download JPG |
| 3 MB JS samplesample-js-3mb.js | JS | 3 MB3,145,728 bytes | Records: 25,097 | Download JS |
| 3 MB JSON samplesample-json-3mb.json | JSON | 3 MB3,145,728 bytes | Records: 9,067 | Download JSON |
| 3 MB JSONL samplesample-jsonl-3mb.jsonl | JSONL | 3 MB3,145,728 bytes | Lines: 9,201 | Download JSONL |
| 3 MB KML samplesample-kml-3mb.kml | KML | 3 MB3,145,728 bytes | Placemarks: 13,442 | Download KML |
| 3 MB LOG samplesample-log-3mb.log | LOG | 3 MB3,145,728 bytes | Lines: 18,458 | Download LOG |
| 3 MB M4A samplesample-m4a-3mb.m4a | M4A | 3 MB3,145,728 bytes | Duration: 3 min 15 s | Download M4A |
| 3 MB Markdown samplesample-md-3mb.md | Markdown | 3 MB3,145,728 bytes | Sections: 8,046 | Download Markdown |
| 3 MB MKV samplesample-mkv-3mb.mkv | MKV | 3 MB3,145,728 bytes | Duration: 55.9 s | Download MKV |
| 3 MB MOV samplesample-mov-3mb.mov | MOV | 3 MB3,145,728 bytes | Duration: 56.0 s | Download MOV |
| 3 MB MP3 samplesample-mp3-3mb.mp3 | MP3 | 3 MB3,145,728 bytes | Duration: 3 min 17 s | Download MP3 |
| 3 MB MP4 samplesample-mp4-3mb.mp4 | MP4 | 3 MB3,145,728 bytes | Duration: 56.0 s | Download MP4 |
| 3 MB OBJ samplesample-obj-3mb.obj | OBJ | 3 MB3,145,728 bytes | Triangles: 98,420 | Download OBJ |
| 3 MB ODS samplesample-ods-3mb.ods | ODS | 3 MB3,145,728 bytes | Data rows: 36,422 | Download ODS |
| 3 MB ODT samplesample-odt-3mb.odt | ODT | 3 MB3,145,728 bytes | Sections: 106,942 | Download ODT |
| 3 MB PDF samplesample-pdf-3mb.pdf | 3 MB3,145,728 bytes | Pages: 10 | Download PDF | |
| 3 MB PNG samplesample-png-3mb.png | PNG | 3 MB3,145,728 bytes | Dimensions: 1187 × 883 px | Download PNG |
| 3 MB PPTX samplesample-pptx-3mb.pptx | PPTX | 3 MB3,145,728 bytes | Slides: 5 | Download PPTX |
| 3 MB RTF samplesample-rtf-3mb.rtf | RTF | 3 MB3,145,728 bytes | Sections: 8,801 | Download RTF |
| 3 MB SQL samplesample-sql-3mb.sql | SQL | 3 MB3,145,728 bytes | INSERT statements: 13,900 | Download SQL |
| 3 MB SRT samplesample-srt-3mb.srt | SRT | 3 MB3,145,728 bytes | Cues: 26,561 | Download SRT |
| 3 MB STL samplesample-stl-3mb.stl | STL | 3 MB3,145,728 bytes | Facets: 17,328 | Download STL |
| 3 MB SVG samplesample-svg-3mb.svg | SVG | 3 MB3,145,728 bytes | Shapes: 42,906 | Download SVG |
| 3 MB TAR samplesample-tar-3mb.tar | TAR | 3 MB3,145,728 bytes | Entries: 2 | Download TAR |
| 3 MB TIFF samplesample-tiff-3mb.tiff | TIFF | 3 MB3,145,728 bytes | Dimensions: 1182 × 887 px | Download TIFF |
| 3 MB TOML samplesample-toml-3mb.toml | TOML | 3 MB3,145,728 bytes | Records: 19,159 | Download TOML |
| 3 MB TSV samplesample-tsv-3mb.tsv | TSV | 3 MB3,145,728 bytes | Data rows: 23,601 | Download TSV |
| 3 MB TXT samplesample-txt-3mb.txt | TXT | 3 MB3,145,728 bytes | Lines: 30,951 | Download TXT |
| 3 MB VTT samplesample-vtt-3mb.vtt | VTT | 3 MB3,145,728 bytes | Cues: 26,560 | Download VTT |
| 3 MB WAV samplesample-wav-3mb.wav | WAV | 3 MB3,145,728 bytes | Duration: 17.8 s | Download WAV |
| 3 MB WebM samplesample-webm-3mb.webm | WebM | 3 MB3,145,728 bytes | Duration: 1 min 22 s | Download WebM |
| 3 MB WebP samplesample-webp-3mb.webp | WebP | 3 MB3,145,728 bytes | Dimensions: 1190 × 881 px | Download WebP |
| 3 MB XLSX samplesample-xlsx-3mb.xlsx | XLSX | 3 MB3,145,728 bytes | Data rows: 33,887 | Download XLSX |
| 3 MB XML samplesample-xml-3mb.xml | XML | 3 MB3,145,728 bytes | Records: 9,789 | Download XML |
| 3 MB YAML samplesample-yaml-3mb.yaml | YAML | 3 MB3,145,728 bytes | Records: 12,968 | Download YAML |
| 3 MB ZIP samplesample-zip-3mb.zip | ZIP | 3 MB3,145,728 bytes | Entries: 4 | Download ZIP |
What is a 3 MB test file?
Three megabytes is a common cap for profile pictures, CV uploads and form attachments, set by the site owner rather than by any standard. A 3 MB file tests the edge of such a limit precisely, without guessing at the exact byte count.
Good for
- Testing upload and attachment limits near 3 MB
- Checking progress bars and resumable uploads
- Timeout and retry tests on slower connections
Transfer time
How long 3,145,728 bytes take to move, before any compression.
| 1 Mbit/s (slow mobile or uplink) | 25 seconds |
|---|---|
| 10 Mbit/s (basic broadband) | 2.5 seconds |
| 100 Mbit/s (fast broadband) | 0.3 seconds |
Related
3 MB files: questions
- How long does a 3 MB download take?
- About 2.5 seconds at 10 Mbit/s and 0.3 seconds at 100 Mbit/s. On a 1 Mbit/s uplink the same upload takes 25 seconds.
- How many bytes is 3 MB?
- 3 MB is 3,145,728 bytes on this site. Sizes use binary units, in which 1 KB is 1,024 bytes and 1 MB is 1,048,576 bytes.