diff --git a/app/components/form/fields/DisksTableField.tsx b/app/components/form/fields/DisksTableField.tsx
index 2f56e61ae..996b7c445 100644
--- a/app/components/form/fields/DisksTableField.tsx
+++ b/app/components/form/fields/DisksTableField.tsx
@@ -14,10 +14,10 @@ import { Badge } from '@oxide/design-system/ui'
 import { AttachDiskModalForm } from '~/forms/disk-attach'
 import { CreateDiskSideModalForm } from '~/forms/disk-create'
 import type { InstanceCreateInput } from '~/forms/instance-create'
-import { sizeCellInner } from '~/table/columns/common'
 import { Button } from '~/ui/lib/Button'
 import { MiniTable } from '~/ui/lib/MiniTable'
 import { Truncate } from '~/ui/lib/Truncate'
+import { Size } from '~/ui/lib/ValueUnit'
 
 export type DiskTableItem =
   | (DiskCreate & { action: 'create' })
@@ -68,7 +68,7 @@ export function DisksTableField({
             },
             {
               header: 'Size',
-              cell: (item) => sizeCellInner(item.size),
+              cell: (item) => <Size bytes={item.size} />,
             },
           ]}
           rowKey={(item) => item.name}
diff --git a/app/pages/project/instances/InstancePage.tsx b/app/pages/project/instances/InstancePage.tsx
index c8146cc86..0fb7c7460 100644
--- a/app/pages/project/instances/InstancePage.tsx
+++ b/app/pages/project/instances/InstancePage.tsx
@@ -52,10 +52,11 @@ import { Modal } from '~/ui/lib/Modal'
 import { PageHeader, PageTitle } from '~/ui/lib/PageHeader'
 import { PropertiesTable } from '~/ui/lib/PropertiesTable'
 import { truncate } from '~/ui/lib/Truncate'
+import { Size, ValueUnit } from '~/ui/lib/ValueUnit'
 import { instanceMetricsBase, pb } from '~/util/path-builder'
 import type * as PP from '~/util/path-params'
 import { pluralize } from '~/util/str'
-import { formatBytes, GiB } from '~/util/units'
+import { GiB } from '~/util/units'
 
 import { useMakeInstanceActions } from './actions'
 
@@ -167,8 +168,6 @@ export default function InstancePage() {
     enabled: !!primaryVpcId,
   })
 
-  const memory = formatBytes(instance.memory)
-
   return (
     <>
       <PageHeader>
@@ -216,12 +215,10 @@ export default function InstancePage() {
       </PageHeader>
       <PropertiesTable columns={2} className="-mt-8 mb-8">
         <PropertiesTable.Row label="cpu">
-          <span className="text-default">{instance.ncpus}</span>
-          <span className="text-tertiary ml-1">{pluralize(' vCPU', instance.ncpus)}</span>
+          <ValueUnit value={instance.ncpus} unit={pluralize('vCPU', instance.ncpus)} />
         </PropertiesTable.Row>
         <PropertiesTable.Row label="ram">
-          <span className="text-default">{memory.value}</span>
-          <span className="text-tertiary ml-1"> {memory.unit}</span>
+          <Size bytes={instance.memory} />
         </PropertiesTable.Row>
         <PropertiesTable.Row label="state">
           <div className="flex items-center gap-2">
diff --git a/app/pages/project/instances/InstancesPage.tsx b/app/pages/project/instances/InstancesPage.tsx
index 19af2687d..ae59c3dd2 100644
--- a/app/pages/project/instances/InstancesPage.tsx
+++ b/app/pages/project/instances/InstancesPage.tsx
@@ -36,12 +36,12 @@ import { EmptyMessage } from '~/ui/lib/EmptyMessage'
 import { PageHeader, PageTitle } from '~/ui/lib/PageHeader'
 import { TableActions } from '~/ui/lib/Table'
 import { Tooltip } from '~/ui/lib/Tooltip'
+import { Size, ValueUnit } from '~/ui/lib/ValueUnit'
 import { setDiff } from '~/util/array'
 import { ALL_ISH } from '~/util/consts'
 import { toLocaleTimeString } from '~/util/date'
 import { pb } from '~/util/path-builder'
 import { pluralize } from '~/util/str'
-import { formatBytes } from '~/util/units'
 
 import { useMakeInstanceActions } from './actions'
 import { ResizeInstanceModal } from './InstancePage'
@@ -104,22 +104,12 @@ export default function InstancesPage() {
       colHelper.accessor('ncpus', {
         header: 'CPU',
         cell: (info) => (
-          <>
-            {info.getValue()}{' '}
-            <span className="text-tertiary ml-1">{pluralize('vCPU', info.getValue())}</span>
-          </>
+          <ValueUnit value={info.getValue()} unit={pluralize('vCPU', info.getValue())} />
         ),
       }),
       colHelper.accessor('memory', {
         header: 'Memory',
-        cell: (info) => {
-          const memory = formatBytes(info.getValue())
-          return (
-            <>
-              {memory.value} <span className="text-tertiary ml-1">{memory.unit}</span>
-            </>
-          )
-        },
+        cell: (info) => <Size bytes={info.getValue()} />,
       }),
       colHelper.accessor(
         (i) => ({ runState: i.runState, timeRunStateUpdated: i.timeRunStateUpdated }),
diff --git a/app/pages/system/inventory/sled/SledPage.tsx b/app/pages/system/inventory/sled/SledPage.tsx
index 7947e6c66..1a64da86c 100644
--- a/app/pages/system/inventory/sled/SledPage.tsx
+++ b/app/pages/system/inventory/sled/SledPage.tsx
@@ -18,7 +18,6 @@ import { PropertiesTable } from '~/ui/lib/PropertiesTable'
 import { truncate } from '~/ui/lib/Truncate'
 import { pb } from '~/util/path-builder'
 import type * as PP from '~/util/path-params'
-import { formatBytes } from '~/util/units'
 
 import { ProvisionPolicyBadge, SledKindBadge, SledStateBadge } from './SledBadges'
 
@@ -38,8 +37,6 @@ export default function SledPage() {
   const { sledId } = useSledParams()
   const { data: sled } = usePrefetchedQuery(sledView({ sledId }))
 
-  const ram = formatBytes(sled.usablePhysicalRam)
-
   return (
     <>
       <PageHeader>
@@ -74,10 +71,10 @@ export default function SledPage() {
         <PropertiesTable.Row label="rack id">
           <span className="text-default">{sled.rackId}</span>
         </PropertiesTable.Row>
-        <PropertiesTable.Row label="usable physical ram">
-          <span className="text-default pr-0.5">{ram.value}</span>
-          <span className="text-tertiary">{ram.unit}</span>
-        </PropertiesTable.Row>
+        <PropertiesTable.SizeRow
+          label="usable physical ram"
+          bytes={sled.usablePhysicalRam}
+        />
       </PropertiesTable>
 
       <RouteTabs fullWidth>
diff --git a/app/table/cells/InstanceResourceCell.tsx b/app/table/cells/InstanceResourceCell.tsx
index a735f54e1..4c4b1e985 100644
--- a/app/table/cells/InstanceResourceCell.tsx
+++ b/app/table/cells/InstanceResourceCell.tsx
@@ -7,20 +7,17 @@
  */
 import type { Instance } from '@oxide/api'
 
-import { formatBytes } from '~/util/units'
+import { Size, ValueUnit } from '~/ui/lib/ValueUnit'
 
 type Props = { value: Pick<Instance, 'ncpus' | 'memory'> }
 
-export const InstanceResourceCell = ({ value }: Props) => {
-  const memory = formatBytes(value.memory)
-  return (
-    <div className="space-y-0.5">
-      <div>
-        {value.ncpus} <span className="text-tertiary">vCPU</span>
-      </div>
-      <div>
-        {memory.value} <span className="text-tertiary">{memory.unit}</span>
-      </div>
+export const InstanceResourceCell = ({ value }: Props) => (
+  <div className="space-y-0.5">
+    <div>
+      <ValueUnit value={value.ncpus} unit="vCPU" />
     </div>
-  )
-}
+    <div>
+      <Size bytes={value.memory} />
+    </div>
+  </div>
+)
diff --git a/app/table/columns/common.tsx b/app/table/columns/common.tsx
index 99f0aa8d5..be4678985 100644
--- a/app/table/columns/common.tsx
+++ b/app/table/columns/common.tsx
@@ -11,7 +11,7 @@ import { InstanceStateBadge } from '~/components/StateBadge'
 import { DescriptionCell } from '~/table/cells/DescriptionCell'
 import { CopyToClipboard } from '~/ui/lib/CopyToClipboard'
 import { DateTime } from '~/ui/lib/DateTime'
-import { formatBytes } from '~/util/units'
+import { Size } from '~/ui/lib/ValueUnit'
 
 // the full type of the info arg is CellContext<Row, Item> from RT, but in these
 // cells we only care about the return value of getValue
@@ -37,16 +37,6 @@ function instanceStateCell(info: Info<InstanceState>) {
   return <InstanceStateBadge state={info.getValue()} />
 }
 
-// not using Info<number> so this can also be used for minitables
-export function sizeCellInner(value: number) {
-  const size = formatBytes(value)
-  return (
-    <span className="text-default">
-      {size.value} <span className="text-tertiary">{size.unit}</span>
-    </span>
-  )
-}
-
 /** Columns used in a bunch of tables */
 export const Columns = {
   /** Truncates text if too long, full text in tooltip */
@@ -55,7 +45,7 @@ export const Columns = {
   },
   id: { header: 'ID', cell: idCell },
   instanceState: { header: 'state', cell: instanceStateCell },
-  size: { cell: (info: Info<number>) => sizeCellInner(info.getValue()) },
+  size: { cell: (info: Info<number>) => <Size bytes={info.getValue()} /> },
   timeCreated: { header: 'created', cell: dateCell },
   timeModified: { header: 'modified', cell: dateCell },
 }
diff --git a/app/ui/lib/PropertiesTable.tsx b/app/ui/lib/PropertiesTable.tsx
index 3322900d3..9f7f96303 100644
--- a/app/ui/lib/PropertiesTable.tsx
+++ b/app/ui/lib/PropertiesTable.tsx
@@ -10,13 +10,13 @@ import type { ReactNode } from 'react'
 
 import { DescriptionCell } from '~/table/cells/DescriptionCell'
 import { EmptyCell } from '~/table/cells/EmptyCell'
-import { sizeCellInner } from '~/table/columns/common'
 import { isOneOf } from '~/util/children'
 import { invariant } from '~/util/invariant'
 
 import { CopyToClipboard } from './CopyToClipboard'
 import { DateTime } from './DateTime'
 import { Truncate } from './Truncate'
+import { Size } from './ValueUnit'
 
 export interface PropertiesTableProps {
   className?: string
@@ -110,7 +110,11 @@ PropertiesTable.SizeRow = ({
 }: {
   bytes: number
   label?: string
-}) => <PropertiesTable.Row label={label}>{sizeCellInner(bytes)}</PropertiesTable.Row>
+}) => (
+  <PropertiesTable.Row label={label}>
+    <Size bytes={bytes} />
+  </PropertiesTable.Row>
+)
 
 PropertiesTable.CopyableRow = ({ label, text }: { label: string; text: string }) => (
   <PropertiesTable.Row label={label}>
diff --git a/app/ui/lib/ValueUnit.tsx b/app/ui/lib/ValueUnit.tsx
new file mode 100644
index 000000000..05bcb3f84
--- /dev/null
+++ b/app/ui/lib/ValueUnit.tsx
@@ -0,0 +1,28 @@
+/*
+ * 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 type { ReactNode } from 'react'
+
+import { formatBytes } from '~/util/units'
+
+/**
+ * A value with a dimmed unit label, e.g. `4 vCPU` or `16 GiB`: the value renders
+ * in the default text color, the unit in tertiary, separated by a single space.
+ */
+export function ValueUnit({ value, unit }: { value: ReactNode; unit: ReactNode }) {
+  return (
+    <span className="text-default">
+      {value} <span className="text-tertiary">{unit}</span>
+    </span>
+  )
+}
+
+/** Format a byte count with `formatBytes` and render it as a {@link ValueUnit}. */
+export function Size({ bytes }: { bytes: number }) {
+  const { value, unit } = formatBytes(bytes)
+  return <ValueUnit value={value} unit={unit} />
+}