Item Flow Monitor
by fylhtq7779
Item Flow Monitor shows the rate at which items move through a container, displayed in items per minute and items per hour, while a player watches the container.
What it does
Real-time throughput monitoring applies to a range of containers, from storage chests and furnace-type blocks to barrels, dispensers, droppers and shulker boxes. A small overlay in the container screen reports the flow rate, so a farm can be measured without manual counting or timers. Three calculation modes are available: an average for stable long-term figures, an exact count per window, and a prediction based on a real-time exponential moving average.
The mod tracks either the first item that enters a container or a specific item chosen by hand. Tracking can be switched off per container type, and the overlay can be hidden for chosen types. Options are set through Mod Menu, which is optional; without it the defaults apply. The interface is translated into 12 languages, including English, Spanish, German and French.
Fabric API is required and must be installed next to Item Flow Monitor. The mod is released under the MIT License and is open source, with source code and an issue tracker published. Files are available for Fabric only, in version 1.0.0 for 1.21.11, dated 2026-02-12, and the mod runs on client and server.
Key features
Live flow rate overlay
An unobtrusive overlay in the container screen reports items per minute and items per hour as items pass through.
Three calculation modes
Average, exact count per window and predicted values let a player read stable long-term figures or quick estimates.
Item selection
A container can track its first item automatically or a specific item selected manually.
Observer-based tracking
Containers are watched only while a tracker is active, so an unused container adds no overhead.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 1
Use cases
Who it’s for: Players who build farms or automated item lines and want to measure their rates in the game. Server owners who run the mod on a multiplayer server can keep it available to every player.
How it compares
ChestTracker is a Fabric mod for 1.21.1 – 1.21.11 that runs on the client alone and is released under the MIT License. Carry On Chest is a Fabric mod for 1.21 – 1.21.11 that needs both client and server and is also MIT-licensed. Container Indexer targets only 1.21.11 and runs on the client, with no source code published.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Item Flow Monitor | Fabric | 1.21.11 | Client and server | 2026-02-12 |
| ChestTracker | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-05-06 |
| Carry On Chest | Fabric | 1.21 – 1.21.11 | Client and server | 2026-03-15 |
| Container Indexer | Fabric | 1.21.11 | Client-side only | 2026-02-02 |
Questions
Does Item Flow Monitor need Fabric API?
Does the server need the mod installed?
Can the overlay be configured?
In the catalog
Item Flow Monitor is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Real-time item throughput monitoring for Minecraft containers. Item Flow Monitor adds an unobtrusive UI overlay to standard containers (chests, hoppers, furnaces, and more) that shows the rate of items flowing through them — in items/min or items/hour. Perfect for players who build farms and want to measure farm…
Official listing
- Modrinth page
- modrinth.com/mod/item-flow-monitor
- Owner
- fylhtq7779
- Published
- 2026-02-12
- Updated on Modrinth
- 2026-02-12
- Facts verified
- 2026-10-15