Spawner Calculator
by KnownVisitor
Spawner Calculator, a Fabric client mod, adds a chat command that works out what spawners cost and how many are owed in a trade.
What it does
A player types the calc command and enters an amount of spawners, and the mod returns the price with the figure flipped, which suits donut SMP servers. Server sell and buy prices can be entered as presets, and the calculator fills its text box automatically once a value is set. The mod runs on the client alone, so servers do not need it. Files are published for Fabric only, across 12 release versions, 1.21 – 1.21.11.
Key features
Chat command
The calc command is typed in chat to calculate a price or the number of spawners owed.
Price presets
Server sell and buy prices can be entered once, then used by a box press to buy or sell a set amount.
Spawner stacks
Enter a number of spawners and the calculator shows how many stacks that makes, plus the individual count.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
BtrBz is a Fabric client mod, open source under the GNU Lesser General Public License v3.0 only, with files for 1.21.5 – 26.2. DonutSMP Balances covers only 1.21.11 under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Spawner Calculator | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-08-03 |
| BtrBz | Fabric | 1.21.5 – 26.2 | Client-side only | 2026-10-11 |
| DonutSMP Balances | Fabric | 1.21.11 | Client-side only | 2026-04-19 |
Questions
Does Spawner Calculator need to be installed on the server?
Which game versions have files?
In the catalog
Spawner Calculator is one of 2,072 Economy mods on ModsFinder, and one of 1,159 Economy mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from KnownVisitor
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What the author says
Imput you servers sell/buy prices into the Presets box then press buy or sell to make the amount you entered auto fill the calculator text box. The Spawner Stacks Calculator allows you to enter the ammout of spawners and it tell you how many stacks + individual spawners are equivalent to your entered number.
Official listing
- Modrinth page
- modrinth.com/mod/spawner-calculator
- Owner
- KnownVisitor
- Published
- 2026-08-01
- Updated on Modrinth
- 2026-08-03
- Facts verified
- 2026-10-15