diff --git a/web/src/lib/components/repo/PanelHeader.svelte b/web/src/lib/components/repo/PanelHeader.svelte
index 84bf05cc..06f98237 100644
--- a/web/src/lib/components/repo/PanelHeader.svelte
+++ b/web/src/lib/components/repo/PanelHeader.svelte
@@ -2,6 +2,7 @@
 	import { resolve } from "$app/paths";
 	import type { Component } from "svelte";
 	import type { SvelteHTMLElements } from "svelte/elements";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		title: string;
@@ -23,7 +24,7 @@
 	{title}
 	{#if count !== undefined}
 		<span class="rounded-sm bg-background-inset px-1 mt-px typography-paragraph-small">
-			{approximate && count > 0 ? `${count}+` : count}
+			{approximate && count > 0 ? `${formatCount(count)}+` : formatCount(count)}
 		</span>
 	{/if}
 </a>
diff --git a/web/src/lib/components/repo/RepoCardContent.svelte b/web/src/lib/components/repo/RepoCardContent.svelte
index e45391dc..3dfaa93b 100644
--- a/web/src/lib/components/repo/RepoCardContent.svelte
+++ b/web/src/lib/components/repo/RepoCardContent.svelte
@@ -7,6 +7,7 @@
 	import GitPullRequest from "$icon/git-pull-request";
 	import StarButton from "./StarButton.svelte";
 	import type { RepoCardData } from "$lib/components/profile/types";
+	import { formatCount } from "$lib/format";
 	let {
 		repo,
 		starButton = true,
@@ -68,7 +69,7 @@
 			{#each stats as stat (stat.Icon)}
 				<span class="flex items-center gap-1">
 					<stat.Icon class="size-3.5 shrink-0" aria-hidden="true" />
-					<span>{stat.value}</span>
+					<span>{formatCount(stat.value)}</span>
 				</span>
 			{/each}
 		</div>
diff --git a/web/src/lib/components/repo/RepoHeader.svelte b/web/src/lib/components/repo/RepoHeader.svelte
index 2c9456b9..e2a9eff4 100644
--- a/web/src/lib/components/repo/RepoHeader.svelte
+++ b/web/src/lib/components/repo/RepoHeader.svelte
@@ -10,6 +10,7 @@
 	import { getAuth } from "$lib/auth.svelte";
 	import StarButton from "./StarButton.svelte";
 	import type { RepoCounts, RepoInfo } from "./types";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		repo: RepoInfo;
@@ -44,7 +45,7 @@
 				icon={Star}
 				title="Starred by"
 			>
-				{counts.stars}
+				{formatCount(counts.stars)}
 			</Button>
 		{/if}
 
@@ -60,7 +61,7 @@
 				Fork
 			</Button>
 			<Button href={resolve(`${base}/forks` as "/")} variant="ghost" size="small" title="Forked by">
-				{counts.forks}
+				{formatCount(counts.forks)}
 			</Button>
 		</ButtonGroup>
 	</div>
diff --git a/web/src/lib/components/repo/RepoToolbar.svelte b/web/src/lib/components/repo/RepoToolbar.svelte
index 8f9d1c5a..ea43b738 100644
--- a/web/src/lib/components/repo/RepoToolbar.svelte
+++ b/web/src/lib/components/repo/RepoToolbar.svelte
@@ -8,6 +8,7 @@
 	import CloneDropdown from "./CloneDropdown.svelte";
 	import RefSelector from "./RefSelector.svelte";
 	import type { RepoInfo } from "./types";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		repo: RepoInfo;
@@ -56,21 +57,21 @@
 			class="inline-flex items-center gap-1 typography-paragraph-small font-bold text-foreground-default no-underline hover:underline md:hidden"
 		>
 			<GitCommitHorizontal class="size-4" aria-hidden="true" />
-			{totalCommits}
+			{formatCount(totalCommits)}
 		</a>
 		<a
 			href={resolve(`${base}/branches` as "/")}
 			class="inline-flex items-center gap-1 typography-paragraph-small font-bold text-foreground-default no-underline hover:underline md:hidden"
 		>
 			<GitBranch class="size-4" aria-hidden="true" />
-			{totalBranches}
+			{formatCount(totalBranches)}
 		</a>
 		<a
 			href={resolve(`${base}/tags` as "/")}
 			class="inline-flex items-center gap-1 typography-paragraph-small font-bold text-foreground-default no-underline hover:underline md:hidden"
 		>
 			<Tags class="size-4" aria-hidden="true" />
-			{totalTags}
+			{formatCount(totalTags)}
 		</a>
 		<CloneDropdown {repo} {ref} {bobbinUrl} />
 	</div>
diff --git a/web/src/lib/components/repo/StarButton.svelte b/web/src/lib/components/repo/StarButton.svelte
index 5eb890d6..a4013af5 100644
--- a/web/src/lib/components/repo/StarButton.svelte
+++ b/web/src/lib/components/repo/StarButton.svelte
@@ -6,6 +6,7 @@
 	import ButtonGroup from "$lib/components/ui/ButtonGroup.svelte";
 	import { getProfileCounts } from "$lib/components/profile/counts.svelte";
 	import { createOptimisticRelation, createOptimisticCount } from "$lib/optimistic.svelte";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		repoDid: string;
@@ -88,7 +89,7 @@
 				size="small"
 				title="Starred by"
 			>
-				{starCount.value}
+				{formatCount(starCount.value)}
 			</Button>
 		</ButtonGroup>
 		{#if failed}
diff --git a/web/src/lib/components/repo/issues/IssueCardContent.svelte b/web/src/lib/components/repo/issues/IssueCardContent.svelte
index 0269b5ae..b4ea88ad 100644
--- a/web/src/lib/components/repo/issues/IssueCardContent.svelte
+++ b/web/src/lib/components/repo/issues/IssueCardContent.svelte
@@ -6,6 +6,7 @@
 	import IssueStatePill from "./IssueStatePill.svelte";
 	import type { IssueSummary } from "$lib/components/repo/types";
 	import Separator from "$lib/components/ui/Separator.svelte";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		ownerHandle: string;
@@ -42,7 +43,7 @@
 	<Separator variant="dot" />
 
 	<a {href} class="text-foreground-muted no-underline hover:underline">
-		{issue.commentCount}
+		{formatCount(issue.commentCount)}
 		{issue.commentCount === 1 ? "comment" : "comments"}
 	</a>
 </div>
diff --git a/web/src/lib/components/repo/issues/IssueToolbar.svelte b/web/src/lib/components/repo/issues/IssueToolbar.svelte
index 49633ce5..cfc4d209 100644
--- a/web/src/lib/components/repo/issues/IssueToolbar.svelte
+++ b/web/src/lib/components/repo/issues/IssueToolbar.svelte
@@ -6,6 +6,7 @@
 	import Button from "$lib/components/ui/Button.svelte";
 	import ButtonGroup, { segmentProps } from "$lib/components/ui/ButtonGroup.svelte";
 	import IssueSearch from "./IssueSearch.svelte";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		ownerHandle: string;
@@ -38,7 +39,7 @@
 			icon={CircleDot}
 		>
 			<span>
-				<span class="hidden sm:inline">{openCount}</span>
+				<span class="hidden sm:inline">{formatCount(openCount)}</span>
 				Open
 			</span>
 		</Button>
@@ -49,7 +50,7 @@
 			icon={CircleX}
 		>
 			<span>
-				<span class="hidden sm:inline">{closedCount}</span>
+				<span class="hidden sm:inline">{formatCount(closedCount)}</span>
 				Closed
 			</span>
 		</Button>
diff --git a/web/src/lib/components/repo/pulls/PullCardContent.svelte b/web/src/lib/components/repo/pulls/PullCardContent.svelte
index c25748e8..4f6f04e9 100644
--- a/web/src/lib/components/repo/pulls/PullCardContent.svelte
+++ b/web/src/lib/components/repo/pulls/PullCardContent.svelte
@@ -6,6 +6,7 @@
 	import PullStatePill from "./PullStatePill.svelte";
 	import type { PullSummary } from "$lib/components/repo/types";
 	import Separator from "$lib/components/ui/Separator.svelte";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		ownerHandle: string;
@@ -44,7 +45,7 @@
 	<Separator variant="dot" />
 
 	<a {href} class="text-foreground-muted no-underline hover:underline">
-		{pull.commentCount}
+		{formatCount(pull.commentCount)}
 		{pull.commentCount === 1 ? "comment" : "comments"}
 	</a>
 </div>
diff --git a/web/src/lib/components/repo/pulls/PullCompose.svelte b/web/src/lib/components/repo/pulls/PullCompose.svelte
index 8d2dbbd9..02a5795d 100644
--- a/web/src/lib/components/repo/pulls/PullCompose.svelte
+++ b/web/src/lib/components/repo/pulls/PullCompose.svelte
@@ -30,6 +30,7 @@
 	import type { SelectOption } from "$lib/components/ui/selectField";
 	import type { MarkupContext } from "$lib/markup";
 	import type { ForkOption } from "../../../../routes/[handle]/[repo]/pulls/new/+page";
+	import { formatCount } from "$lib/format";
 
 	/** everything the route's load derived, passed through whole */
 	interface Compose {
@@ -426,7 +427,7 @@
 						class="flex min-w-0 items-center justify-between gap-3 typography-paragraph-small text-foreground-muted"
 					>
 						<span class="shrink-0">
-							{compose.commits.length}
+							{formatCount(compose.commits.length)}
 							{compose.commits.length === 1 ? "commit" : "commits"}
 						</span>
 						<span
diff --git a/web/src/lib/components/repo/pulls/PullDiscussion.svelte b/web/src/lib/components/repo/pulls/PullDiscussion.svelte
index f2fb4f77..4a74297d 100644
--- a/web/src/lib/components/repo/pulls/PullDiscussion.svelte
+++ b/web/src/lib/components/repo/pulls/PullDiscussion.svelte
@@ -21,6 +21,7 @@
 	import type { ResolvedPathname } from "$app/types";
 	import type { CommentView, ThreadInput } from "$lib/components/comment/comments";
 	import type { MarkupContext } from "$lib/markup";
+	import { formatCount } from "$lib/format";
 
 	interface PullVersion {
 		base: string;
@@ -77,7 +78,7 @@
 
 	const latest = $derived(versions.length - 1);
 	const comments = $derived(versions.reduce((total, v) => total + (v.comments?.length ?? 0), 0));
-	const plural = (n: number, noun: string) => `${n} ${noun}${n === 1 ? "" : "s"}`;
+	const plural = (n: number, noun: string) => `${formatCount(n)} ${noun}${n === 1 ? "" : "s"}`;
 	const profileHref = (handle: string) => resolve(`/${handle}` as "/");
 
 	const isConflicted = $derived((actions?.mergeCheck?.conflicts?.length ?? 0) > 0);
diff --git a/web/src/lib/components/repo/pulls/PullToolbar.svelte b/web/src/lib/components/repo/pulls/PullToolbar.svelte
index d634c045..8db11648 100644
--- a/web/src/lib/components/repo/pulls/PullToolbar.svelte
+++ b/web/src/lib/components/repo/pulls/PullToolbar.svelte
@@ -7,6 +7,7 @@
 	import Button from "$lib/components/ui/Button.svelte";
 	import ButtonGroup, { segmentProps } from "$lib/components/ui/ButtonGroup.svelte";
 	import PullSearch from "./PullSearch.svelte";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		ownerHandle: string;
@@ -39,7 +40,7 @@
 			icon={GitPullRequest}
 		>
 			<span>
-				<span class="hidden sm:inline">{openCount}</span>
+				<span class="hidden sm:inline">{formatCount(openCount)}</span>
 				Open
 			</span>
 		</Button>
@@ -50,7 +51,7 @@
 			icon={GitMerge}
 		>
 			<span>
-				<span class="hidden sm:inline">{mergedCount}</span>
+				<span class="hidden sm:inline">{formatCount(mergedCount)}</span>
 				Merged
 			</span>
 		</Button>
@@ -61,7 +62,7 @@
 			icon={GitPullRequestClosed}
 		>
 			<span>
-				<span class="hidden sm:inline">{closedCount}</span>
+				<span class="hidden sm:inline">{formatCount(closedCount)}</span>
 				Closed
 			</span>
 		</Button>
diff --git a/web/src/lib/components/ui/Tabs.svelte b/web/src/lib/components/ui/Tabs.svelte
index f1858e7e..2dc7411e 100644
--- a/web/src/lib/components/ui/Tabs.svelte
+++ b/web/src/lib/components/ui/Tabs.svelte
@@ -95,6 +95,7 @@
 	import { navigating } from "$app/state";
 	import type { ResolvedPathname } from "$app/types";
 	import { Spring, prefersReducedMotion } from "svelte/motion";
+	import { formatCount } from "$lib/format";
 
 	interface Props {
 		tabs: TabDef[];
@@ -221,7 +222,7 @@
 				{/if}
 			</span>
 			{#if tab.count}
-				<span class={style.count({ selected: isSelected })}>{tab.count}</span>
+				<span class={style.count({ selected: isSelected })}>{formatCount(tab.count)}</span>
 			{/if}
 		</a>
 	{/each}
diff --git a/web/src/lib/format.ts b/web/src/lib/format.ts
index 580948a1..ec79bb04 100644
--- a/web/src/lib/format.ts
+++ b/web/src/lib/format.ts
@@ -79,3 +79,11 @@ export const formatDateTime = (input: string | Date): string => {
 	const date = typeof input === "string" ? new Date(input) : input;
 	return Number.isNaN(date.getTime()) ? "" : dtfFull.format(date);
 };
+
+export const formatCount = (n: number | undefined | null): string => {
+	if (n == null) return "";
+	if (n < 1000) return String(n);
+	const k = n / 1000;
+	const formatted = k.toFixed(1);
+	return `${formatted.replace(/\.0$/, "")}k`;
+};