diff --git a/src/lib/types/api/weaponSeries.ts b/src/lib/types/api/weaponSeries.ts
index fc301b99..16021637 100644
--- a/src/lib/types/api/weaponSeries.ts
+++ b/src/lib/types/api/weaponSeries.ts
@@ -20,7 +20,7 @@ export interface WeaponSeriesRef {
 	name: { en: string; ja: string }
 	hasWeaponKeys: boolean
 	hasAwakening: boolean
-	/** Type of augment this series supports: "ax", "befoulment", or "none" */
+	/** Type of augment this series supports: "ax", "befoulment", or "no_augment" */
 	augmentType: AugmentType
 	extra: boolean
 	elementChangeable: boolean
@@ -40,7 +40,7 @@ export interface WeaponSeries {
 	elementChangeable: boolean
 	hasWeaponKeys: boolean
 	hasAwakening: boolean
-	/** Type of augment this series supports: "ax", "befoulment", or "none" */
+	/** Type of augment this series supports: "ax", "befoulment", or "no_augment" */
 	augmentType: AugmentType
 	// Only included in :full view (show endpoint)
 	weaponCount?: number
diff --git a/src/lib/types/api/weaponStatModifier.ts b/src/lib/types/api/weaponStatModifier.ts
index a6dd6547..56f3348a 100644
--- a/src/lib/types/api/weaponStatModifier.ts
+++ b/src/lib/types/api/weaponStatModifier.ts
@@ -11,7 +11,7 @@
  * Augment type enum for weapon series.
  * Determines whether a weapon series supports AX skills, befoulments, or neither.
  */
-export type AugmentType = 'none' | 'ax' | 'befoulment'
+export type AugmentType = 'no_augment' | 'ax' | 'befoulment'
 
 /**
  * WeaponStatModifier from the API.
diff --git a/src/lib/utils/augmentType.ts b/src/lib/utils/augmentType.ts
new file mode 100644
index 00000000..545dda45
--- /dev/null
+++ b/src/lib/utils/augmentType.ts
@@ -0,0 +1,42 @@
+import type { AugmentType } from '$lib/types/api/weaponStatModifier'
+
+interface AugmentTypeData {
+	en: string
+	ja: string
+}
+
+export const AUGMENT_TYPES: Record<AugmentType, AugmentTypeData> = {
+	no_augment: { en: 'None', ja: 'なし' },
+	ax: { en: 'AX Skills', ja: 'AXスキル' },
+	befoulment: { en: 'Befoulment', ja: '禍スキル' }
+}
+
+export const AUGMENT_TYPE_LABELS: Record<AugmentType, string> = {
+	no_augment: 'None',
+	ax: 'AX Skills',
+	befoulment: 'Befoulment'
+}
+
+export function getAugmentTypeLabel(type?: AugmentType): string {
+	if (!type) return '—'
+	return AUGMENT_TYPE_LABELS[type] || '—'
+}
+
+export function getAugmentTypeName(type?: AugmentType, locale: 'en' | 'ja' = 'en'): string {
+	if (!type) return '—'
+	const data = AUGMENT_TYPES[type]
+	if (!data) return '—'
+	return data[locale]
+}
+
+export function getAugmentTypeOptions(): Array<{ value: AugmentType; label: string }> {
+	return Object.entries(AUGMENT_TYPE_LABELS).map(([value, label]) => ({
+		value: value as AugmentType,
+		label
+	}))
+}
+
+export function getAugmentTypeClass(type?: AugmentType): string {
+	if (!type || type === 'no_augment') return ''
+	return `augment-${type}`
+}