diff --git a/netbox/extras/forms/bulk_edit.py b/netbox/extras/forms/bulk_edit.py
index c0a210e42..9cbfbae32 100644
--- a/netbox/extras/forms/bulk_edit.py
+++ b/netbox/extras/forms/bulk_edit.py
@@ -76,11 +76,11 @@ class CustomFieldBulkEditForm(ChangelogMessageMixin, BulkEditForm):
         required=False,
         widget=BulkEditNullBooleanSelect()
     )
-    validation_minimum = forms.IntegerField(
+    validation_minimum = forms.DecimalField(
         label=_('Minimum value'),
         required=False,
     )
-    validation_maximum = forms.IntegerField(
+    validation_maximum = forms.DecimalField(
         label=_('Maximum value'),
         required=False,
     )
diff --git a/netbox/extras/forms/filtersets.py b/netbox/extras/forms/filtersets.py
index 675315bed..85a043f3e 100644
--- a/netbox/extras/forms/filtersets.py
+++ b/netbox/extras/forms/filtersets.py
@@ -103,11 +103,11 @@ class CustomFieldFilterForm(SavedFiltersMixin, FilterForm):
             choices=BOOLEAN_WITH_BLANK_CHOICES
         )
     )
-    validation_minimum = forms.IntegerField(
+    validation_minimum = forms.DecimalField(
         label=_('Minimum value'),
         required=False
     )
-    validation_maximum = forms.IntegerField(
+    validation_maximum = forms.DecimalField(
         label=_('Maximum value'),
         required=False
     )
diff --git a/netbox/extras/graphql/filters.py b/netbox/extras/graphql/filters.py
index dda9d947b..e7d5ef573 100644
--- a/netbox/extras/graphql/filters.py
+++ b/netbox/extras/graphql/filters.py
@@ -17,7 +17,7 @@ if TYPE_CHECKING:
     )
     from tenancy.graphql.filters import TenantFilter, TenantGroupFilter
     from netbox.graphql.enums import ColorEnum
-    from netbox.graphql.filter_lookups import IntegerLookup, JSONFilter, StringArrayLookup, TreeNodeFilter
+    from netbox.graphql.filter_lookups import FloatLookup, IntegerLookup, JSONFilter, StringArrayLookup, TreeNodeFilter
     from users.graphql.filters import GroupFilter, UserFilter
     from virtualization.graphql.filters import ClusterFilter, ClusterGroupFilter, ClusterTypeFilter
     from .enums import *
@@ -151,10 +151,10 @@ class CustomFieldFilter(BaseObjectTypeFilterMixin, ChangeLogFilterMixin):
     weight: Annotated['IntegerLookup', strawberry.lazy('netbox.graphql.filter_lookups')] | None = (
         strawberry_django.filter_field()
     )
-    validation_minimum: Annotated['IntegerLookup', strawberry.lazy('netbox.graphql.filter_lookups')] | None = (
+    validation_minimum: Annotated['FloatLookup', strawberry.lazy('netbox.graphql.filter_lookups')] | None = (
         strawberry_django.filter_field()
     )
-    validation_maximum: Annotated['IntegerLookup', strawberry.lazy('netbox.graphql.filter_lookups')] | None = (
+    validation_maximum: Annotated['FloatLookup', strawberry.lazy('netbox.graphql.filter_lookups')] | None = (
         strawberry_django.filter_field()
     )
     validation_regex: FilterLookup[str] | None = strawberry_django.filter_field()
diff --git a/netbox/extras/migrations/0133_make_cf_minmax_decimal.py b/netbox/extras/migrations/0133_make_cf_minmax_decimal.py
new file mode 100644
index 000000000..6ab7d25ea
--- /dev/null
+++ b/netbox/extras/migrations/0133_make_cf_minmax_decimal.py
@@ -0,0 +1,21 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('extras', '0132_configcontextprofile'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='customfield',
+            name='validation_maximum',
+            field=models.DecimalField(blank=True, decimal_places=4, max_digits=16, null=True),
+        ),
+        migrations.AlterField(
+            model_name='customfield',
+            name='validation_minimum',
+            field=models.DecimalField(blank=True, decimal_places=4, max_digits=16, null=True),
+        ),
+    ]
diff --git a/netbox/extras/models/customfields.py b/netbox/extras/models/customfields.py
index caf113f97..33ddc16ac 100644
--- a/netbox/extras/models/customfields.py
+++ b/netbox/extras/models/customfields.py
@@ -174,13 +174,17 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
         verbose_name=_('display weight'),
         help_text=_('Fields with higher weights appear lower in a form.')
     )
-    validation_minimum = models.BigIntegerField(
+    validation_minimum = models.DecimalField(
+        max_digits=16,
+        decimal_places=4,
         blank=True,
         null=True,
         verbose_name=_('minimum value'),
         help_text=_('Minimum allowed value (for numeric fields)')
     )
-    validation_maximum = models.BigIntegerField(
+    validation_maximum = models.DecimalField(
+        max_digits=16,
+        decimal_places=4,
         blank=True,
         null=True,
         verbose_name=_('maximum value'),
@@ -471,7 +475,7 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
             field = forms.DecimalField(
                 required=required,
                 initial=initial,
-                max_digits=12,
+                max_digits=16,
                 decimal_places=4,
                 min_value=self.validation_minimum,
                 max_value=self.validation_maximum