Interactive Tools
Fifteen free browser-based tools to plan crafts, design bases, plot routes, coordinate co-op sessions, edit save data, manage your inventory, browse curated mods, track achievements, showcase your unlocks, chart the story, speedrun with live splits, log creature encounters, optimize speedrun routes, configure vehicle loadouts, and map biome hazards. Every tool runs locally 鈥?no login required, no data sent to a server.
All Tools
Pick a tool to jump in. Everything is free, ad-free, and works on mobile.
Crafting Calculator
Calculate total raw materials for 52+ blueprints. Includes 5 Quick Start presets for survival kits, seabases, and loadouts.
Base Planner
Visual 10脳10 grid planner with hull integrity, power, oxygen, and material requirements calculations.
Route Planner
Distance and travel time calculator across 12 biomes with 5 vehicle options and danger assessment.
Co-op Planner
Coordinate 4-player sessions with role templates, task assignment, and progress tracking.
Save Editor
Plan and manage 3 save slots with player stats editor, biome position, vehicle conditions, and JSON export/import.
Inventory Manager
Plan loadouts, organize locker storage, and manage vehicle inventory with 5 loadout presets.
Mod Manager
Discover 30+ curated community mods with compatibility check, loadout builder, and risk warnings.
Achievement Tracker
Track 40+ achievements across 6 categories with progress bars, hidden detection, and localStorage saves.
Achievement Showcase
Create beautiful PNG showcases of your unlocked achievements. 5 themes, 3 resolutions, share to social.
Story Progress Tracker
Track all 25+ story missions, side quests, and endings. Visual story map, decision predictor, and NPC tracker.
Speedrun Timer
Precision timer with live splits, PB tracking, and 5 categories (Any%, 100%, Main Story, etc).
Creature Encounter Logger
Personal journal for creature sightings with biome heatmap, aggression tracking, and CSV export.
Speedrun Route Optimizer
Plan and optimize speedrun routes with waypoint editor, 4 categories, greedy path algorithm, and visual path diagram.
Vehicle Loadout Optimizer
Optimize module loadouts for Seamoth, Prawn Suit, and Cyclops with 25+ modules, compatibility checks, and 3 quick-start presets.
Biome Hazard Mapper
Map hazard levels for 15+ biomes with creature threats, radar chart, best dive times, equipment recommendations, and personal safety notes.
Tools Comparison
A quick side-by-side look at what each tool does.
| Tool | Category | Primary Use | Status | Open |
|---|---|---|---|---|
| Crafting Calculator | Planning | Material & recipe lookup | Most Popular | Open |
| Base Planner | Building | Visual base layout & resources | Visual Design | Open |
| Route Planner | Navigation | Distance & travel time | Navigation | Open |
| Co-op Planner | Multiplayer | 4-player coordination | Multiplayer | Open |
| Save Editor | Save Data | Slots, stats & positions | New | Open |
| Inventory Manager | Inventory | Loadouts & locker storage | New | Open |
| Mod Manager | Mods | Curated mods & loadout builder | New | Open |
| Achievement Tracker | Progress | 40+ achievements & progress | New | Open |
| Achievement Showcase | Progress | PNG showcases & social sharing | New | Open |
| Story Progress Tracker | Story | 25+ missions, endings & decisions | New | Open |
| Speedrun Timer | Speedrun | 5 categories, live splits & PB | New | Open |
| Creature Encounter Logger | Creatures | Sightings, heatmap & CSV export | New | Open |
| Speedrun Route Optimizer | Speedrun | Waypoint editor & path optimization | New | Open |
| Vehicle Loadout Optimizer | Vehicles | 25+ modules & compatibility checks | New | Open |
| Biome Hazard Mapper | Navigation | 15+ biomes, threats & radar | New | Open |
Don't miss our 200+ guides
Tools are great for planning. Pair them with our detailed guides covering biomes, creatures, vehicles, base building, and advanced strategies.
Browse All GuidesRelated Guides
Start with these reads to get the most out of every tool.
Best Base Locations
Pick the right biome before placing foundations in the Base Planner.
Read guideEarly Game Survival
Quick Start presets in the Crafting Calculator pair perfectly with this guide.
Read guideDeep-Dive Loadout
Plot safer routes with the Route Planner using biome danger data.
Read guideCo-op Session Checklist
Use this with the Co-op Planner to split tasks across your squad.
Read guideFrequently Asked Questions
Common questions about the Subnautica 2 tools.
Report an Error
Spotted a wrong recipe, outdated biome data, or a broken link? Tell us which tool and what's off so we can fix it.
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