ChunkScope
Find your world. Calculate your farms. Craft smarter. Free Minecraft tools, calculators and guides — updated for every version.
Tools by category
View all apps →World & Chunk Finders
Seed maps, structure finders, ore locators and biome tools — 30+ apps to explore any seed.
Browse finders →Farm & Redstone Calculators
Exclusive calculators: farm output, spawn rates, block counts, item sorters and redstone logic.
Calculate →Crafting & Creative Tools
Enchantment calculators, potion builders, banner and shield editors, fireworks and more.
Craft →Command & Data Tools
Command generators, /tellraw editors, item IDs, loot tables, NBT and server MOTD builders.
Generate →Popular tools
All 50+ apps →Banner Editor
Design Minecraft banners and shields visually — pick patterns and colors, preview the result, copy the banner command.
Open →Farm Output Calculator
Estimate items per hour for iron, gold, sugarcane, creeper and villager farms, with AFK time scaling and material lists. Exclusive to ChunkScope.
Open →Firework Designer
Build custom firework rockets: flight duration, colors, shapes and effects — output the exact /give command.
Open →Nether Portal Calculator
Convert Overworld ↔ Nether coordinates with the 1:8 ratio — and find the portal that links exactly where you want to go.
Open →Ore Finder
Interactive ore distribution by Y level — diamond, iron, gold, copper, emerald, redstone, lapis and ancient debris. Java 1.18+ worldgen constants with best mining levels.
Open →Potion Builder
Plan any potion recipe: base, modifiers, effects and durations — with brewing order and ingredients.
Open →Latest guides
All guides →Easy Iron Farm for 1.21.5
Build a compact 6-villager iron farm with full material list, golem spawn logic and troubleshooting.
Read guide →Find Ancient Cities Fast
Use our structure finder to locate ancient cities and trial chambers in minutes, with loot route tips.
Read guide →Item Sorter: Build a 9-Slot Filter in 20 Minutes
Full redstone item sorter build — hoppers, comparators, redstone dust and the exact wiring for 9 filtered slots.
Read guide →Mending Villager Trade Guide
Set up the perfect mending librarian in 20 minutes — workstation resetting, price locks and common mistakes.
Read guide →Featured seeds
Browse seeds →Ancient city directly beneath spawn on Bedrock — 3 swift sneak books in the central chests.
View on Seed Map →Three villages inside one cherry grove valley, plus a trial chamber entrance at the valley floor.
View on Seed Map →Spawn right on a mushroom island, with a plains village 400 blocks west. Slime chunk at spawn.
View on Seed Map →Trending searches
View trends →Popular questions
More FAQ →How do I find slime chunks without mods? Slime chunks are fixed per seed (10% of chunks), so you never need mods to find them. Method 1 — Seed Map (fastest) Paste your seed into our Slime Chunk Finder and get every slime chunk instantly, including Bedrock. Method 2 — Dig test Pick a chunk you suspect (any chunk border you can see with F3+G on Java). Dig a 3×3 shaft to Y = 10–30 and light it fully. Wait 10 minutes AFK. If slimes appear, you’re in a slime chunk. This only works below Y = 40 — above that, slimes never spawn in chunks.
Java vs Bedrock farms — which rates should I trust? Farms measure output differently per edition because the spawn rules differ. Where they agree Iron farms: 6-villager designs produce within 10% on both editions. Sugarcane / bamboo / cactus: identical growth ticks. Nether portal linking: identical 1:8 rule. Where they differ Mechanic Java Bedrock Mob cap Per player (70 hostile) Per dimension (200+), shared by all players Simulation distance Loaded chunks follow player Fixed by setting (default 4 — raise to 6+) Slime chunks Seed-based, stable Same since 1.18; older worlds differ Redstone 0-tick, quasi-connectivity work No quasi-connectivity — some designs break Villager workstation claim Instant Delayed up to a minute Rule of thumb Trust ChunkScope numbers on both editions when the page says “Java & Bedrock”. For redstone designs, always build on Bedrock-compatible layouts (no quasi-connectivity tricks), and verify rates with the Farm Output Calculator.
My iron farm stopped producing — what’s wrong? Check these in order — one of them is almost always the cause. 1. Villagers aren’t sleeping Golems only spawn after villagers sleep and gossip. Make sure every villager has a claimed bed with 2 blocks of air above it. A villager that can’t sleep stops the whole cycle. Fix: break and re-place beds, or add a third cell. Verify at night — all villagers must lie down.
Why do my Nether portals link to the wrong place? Portal linking feels random until you know the three rules. Rule 1 — The 1:8 ratio Every Nether block equals 8 Overworld blocks. A portal at Nether (10, 20) should link near Overworld (80, 160). The game converts coordinates, then searches for an existing portal. Rule 2 — The search radius After converting, the game searches for a portal in a 128-block radius (Overworld) / 16-block radius (Nether). If it finds any portal there, it links to that one — even if it’s not the “right” one.
Version updates
All updates →1.21.5 Copper Age — New Blocks & Golem Mechanics
What the Copper Age update changes for builds, farms and your world seed.
Read update notes →Snapshot: Cheese Caves — Giant Slime & Frog Spawns
Early snapshot notes on Cheese Caves terrain generation and what to test.
Read update notes →Snapshot: Ice Caves — Packed Ice Veins & Frostburn
New frozen caverns with packed-ice veins and the frostburn mechanic.
Read update notes →Wilderness Bound: 1.22 Plans — New Biomes & World Height
Everything Mojang announced for the next major release and how it affects seeds.
Read update notes →