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Free D&D 5e Tools: Monster Maker, Encounter Builder & More

Nine free tools that share one library. A monster you build can cast a spell you wrote, carry an item you made, and fight in an encounter inside the campaign you planned. The Community Gallery, the SRD reference and Codex, the assistant, work alongside them.

Create

Build the pieces: creatures, spells, gear and house rules.

Monster Creator

Monster Creator

Populate your world with unique and balanced creatures using our monster creator.

Create Monsters
Spell Creator

Spell Creator

Build custom D&D 5e spells. Your homebrew spells appear alongside SRD spells in Monster Creator.

Create Spells

Item Creator

Build any D&D 5e item, from a common torch to an artifact. Charges, attunement, curses and sentient items all included.

Create Items

Rules Workshop

Write up a house rule, a subsystem like morale or injuries, or a rollable table, so another table can switch it on.

Write a Rule

Prepare

Get a session ready: fights, set pieces, treasure and balance.

Encounter Builder

Rate a fight as easy, medium, hard or deadly with the multiplier applied, then write it up so another DM can run it cold.

Build a Fight

Scenario Builder

For encounters that are not fights: negotiations, chases, heists, investigations, skill challenges, hazards and survival.

Build a Scenario

Loot Generator

Roll a hoard by challenge rating, build your own rollable treasure tables, and keep track of who is carrying what.

Roll Treasure

CR Calculator

Work out a monster’s challenge rating from its hit points, armour class and damage, the way the Dungeon Master’s Guide does.

Calculate CR

Shop Generator

Stock a blacksmith, an alchemist or a magic shop for a hamlet or a metropolis, priced, with a rarity cap you set.

Stock a Shop

Session Planner

Plan the next session with no campaign to set up: hooks, key moments, encounters, NPCs and notes. Send it to a campaign when you have one.

Plan a Session

Run

At the table: the fight, the dice, the rules at a glance, and the whole campaign.

Campaign Forge

Campaign Forge

Craft quests, NPCs, and adventure arcs with AI-assisted story tools for your campaigns.

Forge Campaigns

Combat Tracker

Initiative, hit points, conditions and rounds for any fight, with SRD monsters one search away. No campaign needed.

Track a Fight

Dice & Tables

Roll any dice with advantage, keep or drop, and a history. Roll on your own tables, a rule set’s, or the SRD magic item tables.

Roll Dice

DM Screen

The rules you look up mid-session on one printable page: conditions, DCs, cover, travel pace, and CR to XP.

Open the Screen

D&D 5e Quick Reference

Fast, free answers for the table — Challenge Ratings, conditions, and starting gear straight from the D&D 5e SRD. Then build your own with the tools above.

What is Challenge Rating (CR) in D&D 5e?

A monster's Challenge Rating is a quick estimate of how deadly it is to a party of four adventurers of a level roughly equal to that CR. Defeating it grants the listed XP, and its CR sets the proficiency bonus used for its attack rolls, save DCs, and skill checks. CR runs from 0 (harmless) through 1/8, 1/4, and 1/2 up to 30 (world-ending).

D&D 5e CR to XP & proficiency bonus table (CR 0–30)

CRXPProf. Bonus
00–10+2
1/825+2
1/450+2
1/2100+2
1200+2
2450+2
3700+2
41,100+2
51,800+3
62,300+3
72,900+3
83,900+3
95,000+4
105,900+4
117,200+4
128,400+4
1310,000+5
1411,500+5
1513,000+5
1615,000+5
1718,000+6
1820,000+6
1922,000+6
2025,000+6
2133,000+7
2241,000+7
2350,000+7
2462,000+7
2575,000+8
2690,000+8
27105,000+8
28120,000+8
29135,000+9
30155,000+9

Auto-calculate CR in the Monster Creator

Fresh from the Community

Homebrew monsters and spells shared by Chronicle Codex players. Every approved creation becomes a public page others can find and use.