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SPECIFICTION
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GrimTools

grimtools.com

WebWindows
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Spec score 7.1 #17 of 22 in Game Build Planners

What it is

GrimTools is a free web resource for creating and sharing character builds for Grim Dawn. Its calculator displays attributes, combat statistics, resistances, equipment, and combined item statistics. Users can select items, prefixes, suffixes, components, and augments, then upload a completed build for a shareable link or load a character save for further editing. Options cover the Base Game and mods including Diablo 3 Classes and Reign Of Terror. The site also provides an item database for searching game items and affixes and a skill tree planner. An offline desktop edition includes the online calculator’s functionality plus build-list management. GrimTools works in modern browsers and has a Windows version; Internet Explorer versions below 11 are unsupported. Save uploads do not support character saves from mods. The calculator notes that dual-wield ranged attacks-per-second values are higher than in game because it uses a different formula. GrimTools is created by Dammitt and is not affiliated with Crate Entertainment.

Spec sheet

Purpose
The build calculator lets users customize a character’s equipment, masteries, skills and devotions while calculating character stats.Read 30 Sep 2026 · forums.crateentertainment.com
Support
The maker invites questions, suggestions and bug reports in the forum thread and links to a Discord server for discussion, feedback and bug reports.Read 30 Sep 2026 · forums.crateentertainment.com
Founded
2017Read 28 Sep 2026 · grimtools.com
Ads
The calculator page includes a “Remove Ads” option.Read 29 Sep 2026 · grimtools.com
Browser support
The calculator post says the site works in modern browsers and does not support Internet Explorer versions below 11.Read 30 Sep 2026 · forums.crateentertainment.com
Build audience
Crate describes GrimTools as a resource for players creating and sharing builds.Read 29 Sep 2026 · grimdawn.com
Build calculator
The build calculator includes attributes, combat stats, resistances, and build import and sharing controls.Read 29 Sep 2026 · grimtools.com
Build sharing
Users can upload a completed build and receive a link to share it.Read 30 Sep 2026 · forums.crateentertainment.com
Calculation caveat
The calculator post notes that dual-wield ranged attacks-per-second values are higher than in game because it uses a different formula.Read 30 Sep 2026 · forums.crateentertainment.com
Character limits
The calculator post says character saves from mods are not supported by the save upload feature.Read 30 Sep 2026 · forums.crateentertainment.com
Community builds
Crate says new build ideas are posted almost daily in the official forum’s Builds section.Read 29 Sep 2026 · grimdawn.com
Data source
The calculator post says the tool is built automatically from game resources.Read 30 Sep 2026 · forums.crateentertainment.com
Game versions
The calculator page offers Base Game and mod options, including Diablo 3 Classes and Reign Of Terror.Read 29 Sep 2026 · grimtools.com
Item database
The official Grim Dawn guide describes Grim Tools Item Database as a fan-created resource for searching game items and affixes.Read 30 Sep 2026 · grimdawn.com
Item reference
Crate Entertainment describes GrimTools as a resource for finding items in Grim Dawn.Read 29 Sep 2026 · grimdawn.com
Item selection
Equipment slots support choosing items, prefixes, suffixes, components and augments, with combined item stats displayed.Read 30 Sep 2026 · forums.crateentertainment.com
Offline use
An offline desktop version is available and includes the online version’s functionality plus build-list management.Read 30 Sep 2026 · forums.crateentertainment.com
Ownership and affiliation
The calculator page says GrimTools is created by Dammitt and is not affiliated with Crate Entertainment.Read 29 Sep 2026 · grimtools.com
Save import
The calculator can load a character from a save file for further build editing.Read 30 Sep 2026 · forums.crateentertainment.com

Strong points and limits

Strong points

  • Detailed build calculator and equipment stats
  • Shareable links for completed builds
  • Item database and skill tree planner
  • Offline desktop version available
  • Free on web and Windows

Limits

  • Mod character saves cannot be uploaded
  • Dual-wield ranged APS values differ from game
  • Internet Explorer below version 11 is unsupported

Who it suits

GrimTools suits Grim Dawn players planning, editing, saving, and sharing builds, including users working with supported mods.

Verdict

GrimTools offers broad build-planning and sharing tools for Grim Dawn, online and offline. Users should account for its save-import restriction and stated ranged-attack calculation difference.

Where Specifiction places it

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