Click the "Select File" button above, and choose your MLB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert MLB to another file type
To convert MLB projects to another format, you need RORB or other Data software.
Convert a file to MLB
To convert other file formats to the "Hydrological Modeling Data" file type, you need software like RORB or a similar tool.
About MLB files
The .mlb file extension represents several distinct, highly proprietary formats. The most common is a Meteorological rainfall data file used by RORB hydrological modeling software to store precipitation data. It is also used as a MIDI Instrument Library by vintage Willow Pond software, an Xbox 360 Media Library by Microsoft, and a MicroLab data logger file by Fourier Systems. Opening these files natively requires the exact niche software that created them, such as RORB, Visual FoxPro, or MyLabel Designer Deluxe. The main disadvantage of .mlb files is extreme fragmentation and vendor lock-in. A meteorological .mlb is structurally useless to a MIDI editor. They are proprietary and closed-source, meaning you cannot open them in web browsers or standard office suites. If you lose access to the original parent software, your data is essentially locked in an undocumented binary format. You usually want to convert meteorological .mlb files to CSV or TXT to analyze the data in standard spreadsheet tools. MIDI libraries might need conversion to SF2 (SoundFont), while Xbox libraries are best converted to XML. Because .mlb is a closed, proprietary format with multiple conflicting definitions, standard online converters fail completely. Often, only the original software can properly read or export the data. Just drag and drop your file into convert.guru to identify the format, view its internal structure, and extract text if possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your MLB file, detects the exact format, and lets you read the text inside.
If you want to convert MLB file to LB, EXE, ISO, BIN, CUE, PAK, WAD, PK3, PK4, BSP, MAP or SAV, you can use RORB or similar software from the "Meteorological Rainfall Data Storage" category. In the File menu, look for Save As… or Export….
To convert MOD, BIN, CFG, SCX, DAT, MPQ, LOG, CUE, INI, EXE, SCM or ISO files to MLB, try RORB or another comparable tool in the "Meteorological Rainfall Data Storage" category.
The MLB Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our MLB converter.