BIL File Extension

BIL file icon

ESRI BIL Format

What is a BIL file?

Files with the BIL extension are specifically tied to ESRI BIL Format, a Raster Image Files type, and there are 575 files in this category.

The ESRI BIL Format (BIL), created by Esri, is one of file format they developed, and they also built 10 programs to support them.

BIL files are compatible with various operating systems, including Windows. When working with BIL files, you can rely on 4 programs, including ArcGIS, Global Mapper and Terrain Navigator.

How to open a BIL file?

If you can’t open a BIL file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

ArcGIS, Global Mapper and Terrain Navigator are among the most widely used programs for handling BIL files. To install the most up-to-date edition of ArcGIS, visit the official Esri website. You can download the build that works across all operating systems.

After installing, your OS should instantly open BIL files with ArcGIS.

Setting ArcGIS as default BIL viewer

Change the default app for a file type in Mac

  1. Initiate a right click or use Control + left click on the desired BIL file to open a menu where you can select various actions;
  2. Choose "Open in Application" and click "Other";
  3. Look towards the bottom of the window, where you will find the "Enable" menu. "Recommended programs" will be the default selection;
  4. Choose "All Programs" in this menu and search for ArcGIS. Check the box next to "Always open in app" to set it as the default option.

Change default programs in Windows

  1. Take the first step by right-clicking on your BIL file. Next, select "Open With" and then choose "Choose another app" from the available options;
  2. Choose ArcGIS from the available applications listed in the pop-up window to set it as the default application to open your BIL file;
  3. Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

How to edit a BIL file?

To modify BIL files, it is necessary to install dedicated software that lets you open and edit raster image files. Online BIL editors generally offer fewer tools compared to programs designed for ESRI BIL Format.

Best BIL editors 2026

Based on the specified criteria, here is a list of BIL editors that may fit your requirements.

BIL Editor SoftwareDeveloperPlatformsOverall Rating
ArcGISEsriWindows4.1 out of 5 (40 reviews)

Convert files to and from BIL

When a BIL file is not easy to work with, converting it to formats like JPG, PNG, TIF, TIFF, APR or other comparable types may help.

It is important to understand that converting a BIL file might limit certain functions, but this conversion is usually reversible.

Convert BIL to other file formats

Tips and tricks to solve problems with BIL files

Problematic BIL files can usually be resolved by making small changes in your software. See the tips below to help fix common issues.

Are there any techniques or tools available to repair a damaged BIL file?

In a data recovery program, open the damaged BIL file and select the "Repair" menu option. Wait for the recovery process to finish as it will automatically restore the damaged raster image files.

How do I know if my BIL file has been damaged?

The signs of corrupted BIL raster image files can manifest as:

  • Error alerts occur when actions are performed on the file;
  • The file shows slow performance when edited in ArcGIS;
  • The file encounters problems during the opening process or shows error indications;
  • An unexplained increase in the size of the BIL file;
  • The file causes ArcGIS or other software to hang or crash during various operations;

What factors contribute to ArcGIS crash?

Lack of software updates is a possible reason behind ArcGIS crash. Keep your Esri products up to date by installing the latest updates.

Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.