GVB → IGS · Windows

Convert GVB to IGS

Online GIS converters cap file size and need an upload. reaConverter converts GVB to IGS locally, whatever the size of the dataset.

Online converters too slow for your GVB files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. No command line and no scripting, unlike the usual ogr2ogr route.

DownloadGVB to IGS ConverterConvert
GVB to IGS
Online
.gvb.IGS
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .gvb Files to .igs?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your GVB files

Add GVB files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your GVB files into reaConverter

3. Select IGS as output format

Pick IGS as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

Select IGS as output format

4. Start GVB to IGS conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .igs files will be waiting in the destination folder.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your GVB files into IGS without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

How GVB and IGS differ in practice

Geospatial coordinates are absolute positions on the earth, and they are large: a projected easting runs to six or seven digits, while latitude and longitude are small decimals. IGS expects a drawing laid out near its own origin in millimetres or inches. The geometry itself converts correctly, but it can land tens of kilometres from 0,0, or arrive at a scale where an entire county is forty units across. Zoom to extents first, then measure one known distance before dimensioning anything. A line in a GVB image is several pixels wide, so tracing it can mean different things and the mode is yours to choose. Centreline returns a single line running down the middle of each stroke, which is what a scanned drawing needs: one entity per line, snappable and dimensionable, rather than a long thin rectangle around it. Outline follows both edges and returns closed shapes, which suits clipart, logos and anything that will be filled or cut. A precision setting controls how closely the traced paths follow the pixel edges. One thing to plan for: vectorised output from this path is black and white, so colour in the GVB does not survive as colour in the IGS.

Map Data Workflow

From map data to a working drawing

Site plans, utility routes and parcel boundaries often start out as GVB and end up in IGS. reaConverter turns the layers into drawing entities in batch, so a full project folder moves across in one run.

  • Convert every layer in a folder to IGS with the same settings
  • Go the other way too, from DWG to Shapefile, when the GIS team needs the drawings back
  • Render the same data to PDF for a quick review copy
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 13, 2026
An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!
Logan B.
Logan B.
Satisfied Customer
I use the online converter — it’s quick and hassle-free!
Jian Wong
Jian Wong
Happy Online User
Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!
Helen Evans
Helen Evans
Satisfied Customer
Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!
Richard E. Miller
Richard E. Miller
Satisfied Customer
Converts files in seconds! Finally a tool that's both fast and simple to use.
Wei Chen
Wei Chen
Happy User
I'd been searching for reliable conversion software forever — reaConverter has everything I need! After installing and watching the tutorial, I had my files converted to the perfect format in minutes. Flawless experience!
Sanjay Mehta
Sanjay Mehta
Satisfied Customer

FAQ

GVB to IGS Conversion

What are GVB files?

GVB is a datum grid shift file that follows the NTv2 (National Transformation version 2) model, created by the Geodetic Survey of Natural Resources Canada. Such a file helps convert map coordinates between two geodetic datums, which are different mathematical models of the Earth, so that old and new survey data line up correctly. It covers an area with a net of points and stores, for each of them, how far latitude and longitude have to be moved, usually with an estimate of the accuracy of the shift. A program finds the points nearest to a location and calculates the exact correction between them. Files with this structure are used by national mapping agencies and surveyors, and they are particularly valuable for cadastral and engineering work, where small errors matter.

What are IGS files?

The IGS (Initial Graphics Exchange Specification) file format is a standardized CAD data exchange format used to transfer 2D and 3D model data between different CAD systems. Developed in the 1980s, IGES ensures compatibility across various engineering and design software by storing geometric data, annotations, and structure in a neutral ASCII or binary format.

Can reaConverter convert GVB to IGS?

Yes! reaConverter instantly converts .gvb to .igs with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, GIS data among them. For GVB to IGS it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert GVB to IGS online?

If you only need to convert a few GVB files to IGS format, feel free to try our free online free online GVB to IGS converter — perfect for small batches with no installation needed!

How can I turn GVB files into IGS on my computer?

The best way to change GVBs to IGSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from GVB to IGS.

How can I automate GVB to IGS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert GVB files to IGS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line gvb to igs converter for batch processing.

What else can I do with reaConverter?

Convert Gerber imagesConvert RGB to CMYKConvert raster to vectorChange image bit depthConvert CAD formats

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