diff --git a/.changeset/remove-unused-helpers.md b/.changeset/remove-unused-helpers.md
new file mode 100644
index 000000000000..79be5f9bcd0d
--- /dev/null
+++ b/.changeset/remove-unused-helpers.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+chore: remove unused helpers
diff --git a/packages/kit/src/exports/vite/utils.js b/packages/kit/src/exports/vite/utils.js
index 81a6960a2676..996c5fbd8139 100644
--- a/packages/kit/src/exports/vite/utils.js
+++ b/packages/kit/src/exports/vite/utils.js
@@ -191,8 +191,6 @@ function can_export_remote_module(directory) {
 export const server_only_module_pattern = /[/.]server\.[^/]+$/;
 export const server_only_directory_pattern = /\/server\//;
 
-export const strip_virtual_prefix = /** @param {string} id */ (id) => id.replace('\0virtual:', '');
-
 /**
  * For `error_for_missing_config('remote functions', 'experimental.remoteFunctions', 'true')`,
  * returns:
diff --git a/packages/kit/src/utils/path.js b/packages/kit/src/utils/path.js
deleted file mode 100644
index c9e19de4f721..000000000000
--- a/packages/kit/src/utils/path.js
+++ /dev/null
@@ -1,23 +0,0 @@
-// This file contains Node-agnostic path utilities so that it can be used in
-// environments that do not have access to `node:path` (e.g. Cloudflare Workers).
-
-/**
- * @param {string} from
- * @param {string} to
- * @returns {string}
- */
-export function relative(from, to) {
-	const from_parts = from.split('/').filter(Boolean);
-	const to_parts = to.split('/').filter(Boolean);
-	let i = 0;
-	while (i < from_parts.length && i < to_parts.length && from_parts[i] === to_parts[i]) i++;
-	return [...Array(from_parts.length - i).fill('..'), ...to_parts.slice(i)].join('/') || '.';
-}
-
-/**
- * @param  {...string} parts
- * @returns {string}
- */
-export function join(...parts) {
-	return parts.join('/');
-}
diff --git a/packages/kit/src/utils/path.spec.js b/packages/kit/src/utils/path.spec.js
deleted file mode 100644
index cfadb5a62247..000000000000
--- a/packages/kit/src/utils/path.spec.js
+++ /dev/null
@@ -1,32 +0,0 @@
-import { assert, describe } from 'vitest';
-import { relative } from './path.js';
-
-describe('relative', (test) => {
-	test('same path returns .', () => {
-		assert.equal(relative('/a/b/c', '/a/b/c'), '.');
-	});
-
-	test('sibling path', () => {
-		assert.equal(relative('/a/b', '/a/c'), '../c');
-	});
-
-	test('child path', () => {
-		assert.equal(relative('/a', '/a/b/c'), 'b/c');
-	});
-
-	test('parent path', () => {
-		assert.equal(relative('/a/b/c', '/a'), '../..');
-	});
-
-	test('unrelated paths', () => {
-		assert.equal(relative('/a/b', '/c/d'), '../../c/d');
-	});
-
-	test('root to child', () => {
-		assert.equal(relative('/', '/a/b'), 'a/b');
-	});
-
-	test('child to root', () => {
-		assert.equal(relative('/a/b', '/'), '../..');
-	});
-});
diff --git a/packages/kit/src/utils/url.js b/packages/kit/src/utils/url.js
index f9de4a596e6b..3eef1bbea9a3 100644
--- a/packages/kit/src/utils/url.js
+++ b/packages/kit/src/utils/url.js
@@ -82,17 +82,6 @@ export function decode_pathname(pathname) {
 	return pathname.split('%25').map(decodeURI).join('%25');
 }
 
-/** @param {Record<string, string>} params */
-export function decode_params(params) {
-	for (const key in params) {
-		// input has already been decoded by decodeURI
-		// now handle the rest
-		params[key] = decodeURIComponent(params[key]);
-	}
-
-	return params;
-}
-
 /**
  * The error when a URL is malformed is not very helpful, so we augment it with the URI
  * @param {string} uri