Bridge the gap between your classic AD&D 2E adventures and modern 5E play with this fast, one-click conversion tool. It applies Wizards’ official “quick conversion” guidelines to turn 2E NPCs and encounters into usable 5E stat blocks on the fly — perfect for running old modules without weeks of manual redesign.

Core Conversion Formula (Wizards’ Official Quick Method)

• Armor Class: 19 - 2E AC (capped at 22)
• Attack Bonus: HD/2 + 2 (capped at +12)
• Save DC (for abilities/effects): 8 + HD/2 (capped at 20)
• Hit Points: Copied directly from 2E (no formula provided in quick guidelines)
• Saving Throws: Left as 5E’s auto-calculated ability modifiers (matches most Monster Manual entries)
• CR & XP: 2E XP value mapped via community Appendix 1 estimator → 5E CR, then standard 5E CR-to-XP lookup
• Speed: Smart conversion of 2E movement rates to 5E feet (with fly/swim/burrow/climb parsing). Web-walking dropped (becomes Web Walker trait if desired)

How to Use

1. Load this extension in any 5E campaign (it also enables loading 2E modules via acceptfrom ruleset="2E").
2. Single NPC: Open a 5E NPC sheet → drag any 2E NPC shortcut onto the new drop target icon. Stats convert instantly onto the sheet.
3. Full Encounter: Open a Battle/Encounter window → drag a 2E Encounter shortcut onto the drop target. Automatically creates converted 5E NPC records and rewires the encounter list (source encounter updated in place, like the popular BX-to-OSE converter).

Attacks & Powers

Generates full 5E-formatted action text in the desc field (e.g., “Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 15 (2d6 + 8) piercing damage.”) so the built-in PowerManager can parse and roll them correctly. Damage dice/types copied verbatim from 2E — intentional quick-conversion fidelity.

Note (v1): All attacks default to melee reach 5 ft. Ranged detection planned for future update.

Compatibility & Design

• 5E ruleset only
• Non-destructive: No core files edited. Uses clean DB operations and windowclass merging (adds a drop icon reusing stock graphics).
• Works alongside loaded 2E content modules.
• Lightweight and focused — designed for speed, not perfect Monster Manual parity (that’s a curation task best done by hand.