Build before the blood moon rises.
Sketch a defensible base, estimate horde pressure, budget ammo and materials, then tune your survivor build without spreadsheets.
One lab. Eleven survival problems.
Each tool runs entirely in your browser. Start with a rough plan, then adjust the inputs to match your world settings and group.
Base Blueprint Planner
Plan four floors with 16 illustrated build, defense and route objects. Check support risks, budget materials, save, share and export.
02↗Horde Night Calculator
Model enemy pressure, active count, ammunition reserve and repair stock for the next Blood Moon.
03↗Skill Planner
Spend attributes and perk ranks with prerequisite checks and a shareable build link.
04↗Damage & TTK Calculator
Compare real damage, armor mitigation, accuracy, reloads, ammo use and sustained DPS.
05↗XP & Level Calculator
Calculate exact V3.0 experience cost, skill points, activities and leveling time.
06↗Electricity Planner
Budget generator, battery and solar output against traps, lights, sensors and turrets.
07↗Armor Loadout Builder
Mix 15 armor sets by slot and compare protection, penalties, piece buffs and full-set bonuses.
08↗Heatmap & Screamer Planner
Model workstation heat, noisy actions, threshold risk and real time to a Screamer event.
09↗World Events Calendar
See upcoming trader restocks, Blood Moons and airdrop windows in real time.
10↗Loot Stage Calculator
Compare biome, POI, party and perk effects on a practical loot progression model.
11↗Upgrade Cost Calculator
Estimate blocks, wood, cobblestone, concrete mix, forged steel and build time.
Plan with ranges, not false precision.
7 Days to Die uses world settings, game stage, biome, POI and server-side values. Our calculators expose assumptions and give safety margins instead of pretending every world is identical.
What changed, and what should you recalculate?
V3.0 expands world customization and changes enough survival systems that old A21-era calculators can mislead. Treat every major update as a new data profile: recheck perk prerequisites, loot progression, item recipes and sandbox multipliers before relying on a saved plan.