diff --git a/app/forms/instance-resize.tsx b/app/forms/instance-resize.tsx
new file mode 100644
index 000000000..9d916a10e
--- /dev/null
+++ b/app/forms/instance-resize.tsx
@@ -0,0 +1,75 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * Copyright Oxide Computer Company
+ */
+import { useForm } from 'react-hook-form'
+import { useNavigate, type LoaderFunctionArgs } from 'react-router-dom'
+import * as R from 'remeda'
+
+import {
+  apiQueryClient,
+  useApiMutation,
+  useApiQueryClient,
+  usePrefetchedApiQuery,
+} from '@oxide/api'
+
+import { NumberField } from '~/components/form/fields/NumberField'
+import { SideModalForm } from '~/components/form/SideModalForm'
+import { getInstanceSelector, useInstanceSelector } from '~/hooks/use-params'
+import { addToast } from '~/stores/toast'
+import { pb } from '~/util/path-builder'
+
+InstanceResizeForm.loader = async ({ params }: LoaderFunctionArgs) => {
+  const { project, instance } = getInstanceSelector(params)
+  await apiQueryClient.prefetchQuery('instanceView', {
+    path: { instance },
+    query: { project },
+  })
+  return null
+}
+
+export function InstanceResizeForm() {
+  const { instance: instanceName, project } = useInstanceSelector()
+  const queryClient = useApiQueryClient()
+  const navigate = useNavigate()
+
+  const { data: instance } = usePrefetchedApiQuery('instanceView', {
+    path: { instance: instanceName },
+    query: { project },
+  })
+
+  const instanceUpdate = useApiMutation('instanceUpdate', {
+    onSuccess(_updatedInstance) {
+      queryClient.invalidateQueries('instanceView')
+      navigate(pb.instance({ project, instance: instanceName }))
+      addToast({ title: 'Instance updated' })
+    },
+  })
+
+  const form = useForm({ defaultValues: R.pick(instance, ['ncpus', 'memory']) })
+
+  return (
+    <SideModalForm
+      form={form}
+      formType="edit"
+      resourceName="Instance"
+      onDismiss={() => navigate(pb.instance({ project, instance: instanceName }))}
+      onSubmit={({ ncpus, memory }) => {
+        instanceUpdate.mutate({
+          path: { instance: instanceName },
+          query: { project },
+          // very important to include the boot disk or it will be unset
+          body: { ncpus, memory, bootDisk: instance.bootDiskId },
+        })
+      }}
+      loading={instanceUpdate.isPending}
+      submitError={instanceUpdate.error}
+    >
+      <NumberField name="ncpus" control={form.control} />
+      <NumberField name="memory" control={form.control} />
+    </SideModalForm>
+  )
+}
diff --git a/app/pages/project/instances/actions.tsx b/app/pages/project/instances/actions.tsx
index df251f3ab..79d7a7acc 100644
--- a/app/pages/project/instances/actions.tsx
+++ b/app/pages/project/instances/actions.tsx
@@ -118,10 +118,13 @@ export const useMakeInstanceActions = (
           ),
         },
         {
-          label: 'View serial console',
+          label: 'Resize',
           onActivate() {
-            navigate(pb.serialConsole(instanceSelector))
+            navigate(pb.instanceResize(instanceSelector))
           },
+          disabled: !instanceCan.update(instance) && (
+            <>Only {fancifyStates(instanceCan.update.states)} instances can be resized</>
+          ),
         },
         {
           label: 'Delete',
diff --git a/app/routes.tsx b/app/routes.tsx
index 86b159f5f..2f1377547 100644
--- a/app/routes.tsx
+++ b/app/routes.tsx
@@ -23,6 +23,7 @@ import {
 import { CreateImageFromSnapshotSideModalForm } from './forms/image-from-snapshot'
 import { CreateImageSideModalForm } from './forms/image-upload'
 import { CreateInstanceForm } from './forms/instance-create'
+import { InstanceResizeForm } from './forms/instance-resize'
 import { CreateIpPoolSideModalForm } from './forms/ip-pool-create'
 import { EditIpPoolSideModalForm } from './forms/ip-pool-edit'
 import { IpPoolAddRangeSideModalForm } from './forms/ip-pool-range-add'
@@ -319,6 +320,17 @@ export const routes = createRoutesFromElements(
                 loader={StorageTab.loader}
                 handle={{ crumb: 'Storage' }}
               />
+              <Route
+                path="resize"
+                element={
+                  <>
+                    <StorageTab />
+                    <InstanceResizeForm />
+                  </>
+                }
+                loader={StorageTab.loader}
+                handle={{ crumb: 'Resize' }}
+              />
               <Route
                 path="networking"
                 element={<NetworkingTab />}
diff --git a/app/util/path-builder.spec.ts b/app/util/path-builder.spec.ts
index 76e39846e..0f5789256 100644
--- a/app/util/path-builder.spec.ts
+++ b/app/util/path-builder.spec.ts
@@ -44,6 +44,7 @@ test('path builder', () => {
         "instanceConnect": "/projects/p/instances/i/connect",
         "instanceMetrics": "/projects/p/instances/i/metrics",
         "instanceNetworking": "/projects/p/instances/i/networking",
+        "instanceResize": "/projects/p/instances/i/resize",
         "instanceStorage": "/projects/p/instances/i/storage",
         "instances": "/projects/p/instances",
         "instancesNew": "/projects/p/instances-new",
diff --git a/app/util/path-builder.ts b/app/util/path-builder.ts
index 1709b19c5..b135a17dd 100644
--- a/app/util/path-builder.ts
+++ b/app/util/path-builder.ts
@@ -62,6 +62,7 @@ export const pb = {
   instanceStorage: (params: Instance) => `${instanceBase(params)}/storage`,
   instanceConnect: (params: Instance) => `${instanceBase(params)}/connect`,
   instanceNetworking: (params: Instance) => `${instanceBase(params)}/networking`,
+  instanceResize: (params: Instance) => `${instanceBase(params)}/resize`,
   serialConsole: (params: Instance) => `${instanceBase(params)}/serial-console`,
 
   disksNew: (params: Project) => `${projectBase(params)}/disks-new`,