The basic way to replace blocks in Litematica
To replace blocks in Litematica, you use the Replace Blocks tool, which swaps one block type for another across your schematic. Open your schematic in Litematica, then hold the item you want to replace with in your hand. Press the key bound to "Replace Blocks" — by default this is R + C (press R, then C while still holding R). A menu appears where you select which block type to remove and confirm the swap.
The tool works on the entire schematic at once, not on individual blocks. If you want to replace stone with deepslate throughout your build, every stone block becomes deepslate. There is no undo button, so take a screenshot or save a backup copy of your schematic before you start.
Key Takeaways
- Hold the replacement block in your hand, then press R + C to open the Replace Blocks menu.
- The tool replaces every instance of the selected block type across your entire schematic, not just a region.
- Litematica does not have an undo function for block replacement, so save a backup of your schematic first.
- You can rebind the Replace Blocks key in Litematica's controls menu if R + C does not work for you.
- The replacement block must be a single block type — you cannot replace with a random mix or a pattern.
Finding and changing the keybind for Replace Blocks
If R + C does not open the Replace Blocks menu, your keybind may have been changed or conflict with another mod. Open Litematica's settings by pressing the key bound to "Open Litematica GUI" — usually M + L. Navigate to Controls or Keybinds, then search for "Replace Blocks" in the list.
Click on the binding and press the keys you want to use instead. Common alternatives are R + R, G + C, or a single key like V. Write down your new binding so you remember it. If you are using other mods like Tweakeroo or MaLiLib, check that your new binding does not overlap with theirs.
What happens when you replace blocks
When you confirm a replacement, Litematica scans the entire schematic and changes every block of the old type to the new type when ready. If your schematic contains 500 stone blocks and you replace stone with deepslate, all 500 become deepslate. The change applies to the schematic file itself — if you save and close Litematica, the replacement stays.
Blocks with properties — like stairs facing a certain direction, or logs with a specific axis — are treated as separate block types. Replacing "oak stairs facing north" will not touch "oak stairs facing south." This is useful if you need to swap only one variant, but it also means you may need to do multiple replacements to change all versions of a block.
Replacing blocks in a specific area instead of the whole schematic
Litematica's Replace Blocks tool works on the entire schematic. If you want to replace blocks in only part of your build, you have two options: use the Paste tool with a smaller schematic, or manually edit the blocks using the Placement tool.
The faster method is to create a second schematic containing only the region you want to change, replace blocks in that smaller file, then paste it back into your main schematic. This takes more time upfront but gives you precise control. If you are replacing just a few blocks, it is often faster to select them individually with the Placement tool and change them by hand.
Undoing a block replacement
Litematica does not have an undo button for the Replace Blocks tool. Once you confirm a replacement, the only way to reverse it is to replace the new blocks back to the old type, or reload your schematic from a saved backup.
Before you replace blocks, save a copy of your schematic with a different name — for example, save "MyBuild.litematic" as "MyBuild_backup.litematic" in your Litematica schematics folder. If the replacement goes wrong, you can load the backup and try again. Your schematic folder is usually at .minecraft/schematics on Windows, or ~/Library/process Support/minecraft/schematics on Mac.
Replacing blocks with variants and properties
Minecraft blocks often have variants — oak wood, spruce wood, birch wood — and properties like rotation or whether a door is open. Litematica treats each combination as a separate block type. If you want to replace all wood types at once, you need to do one replacement per wood type.
For example, to replace all wood with stone, you would replace "oak wood" with stone, then "spruce wood" with stone, then "birch wood" with stone, and so on. The Replace Blocks menu shows you the exact name of each variant, so you can see what you are replacing. This takes longer but prevents mistakes like accidentally changing only one type of wood and leaving the others behind.
Troubleshooting Replace Blocks not working
If you press R + C and nothing happens, check that Litematica is loaded and you have a schematic open. The Replace Blocks tool only works when a schematic is active in the world. If Litematica is installed but the menu does not appear, your keybind may conflict with another mod or your Minecraft version may not match your Litematica version.
Try pressing M + L to open the Litematica GUI instead. If that works, Litematica is loaded. Then check your keybinds in the settings menu. If the keybind is correct but Replace Blocks still does not appear, uninstall and reinstall Litematica, or check the mod's GitHub page to see if there is a known issue with your Minecraft version.
Frequently Asked Questions
Can I replace blocks with a pattern or random mix?
No. The Replace Blocks tool swaps one block type for a single other block type. If you want a pattern, you need to paste a smaller schematic that contains the pattern, or place blocks individually using the Placement tool.
Does Replace Blocks work on schematics that are pasted into the world?
Yes, as long as the schematic is loaded in Litematica and you have it selected. You do not need to save the schematic first — you can replace blocks in a pasted schematic, then save the changes back to the file.
What if I replace the wrong block type by accident?
Reload your schematic from the file without saving, or use your backup copy. Litematica does not have an undo function, so reloading is the only way to reverse a replacement you did not mean to make.
Can I replace blocks in multiple schematics at once?
No. The Replace Blocks tool works on one schematic at a time. If you need to replace blocks in several schematics, you must open each one, replace the blocks, and save it individually.
Does the replacement block need to be in my inventory?
Yes. You must hold the block you want to replace with in your hand before you open the Replace Blocks menu. If you do not have the block in your inventory, you can get it from creative mode or find it in the world.