diff --git a/src/engine/query.ts b/src/engine/query.ts
index 3912f12..3958bcf 100644
--- a/src/engine/query.ts
+++ b/src/engine/query.ts
@@ -68,8 +68,12 @@ const DEFAULT_ABSTRACT_QUERY_OPTIONS: AbstractQueryOptions = {
   convertToQuery: (abstractQuery) => {
     const query: Query = {}
     for (const [key, value] of Object.entries(abstractQuery)) {
-      if (value !== undefined) {
-        query[key] = value.toString()
+      if (Array.isArray(value)) {
+        query[key] = value.map((v) => v.toString())
+      } else {
+        if (value !== undefined) {
+          query[key] = value.toString()
+        }
       }
     }
     return query
diff --git a/src/routers/__test__/inMemory.test.ts b/src/routers/__test__/inMemory.test.ts
index df0ccb6..509f70d 100644
--- a/src/routers/__test__/inMemory.test.ts
+++ b/src/routers/__test__/inMemory.test.ts
@@ -186,4 +186,26 @@ describe('InMemory', () => {
 
     expect(result.current.query.search).toBe(search)
   })
+
+  test('should handle array query parameters with single and multiple options', () => {
+    const optionsSchema = z.object({
+      options: z.array(z.string()),
+    })
+
+    const { result } = renderHook(() =>
+      useQuery(optionsSchema, { options: [] }),
+    )
+
+    act(() => {
+      result.current.setQuery({ options: ['A'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual(['A'])
+
+    act(() => {
+      result.current.setQuery({ options: ['A', 'B'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual(['A', 'B'])
+  })
 })
diff --git a/src/routers/__test__/nextRouter.test.ts b/src/routers/__test__/nextRouter.test.ts
index 4f9a5b6..eebfa81 100644
--- a/src/routers/__test__/nextRouter.test.ts
+++ b/src/routers/__test__/nextRouter.test.ts
@@ -15,6 +15,7 @@ describe('NextRouter', () => {
 
   const searchSchema = z.object({
     search: z.string().optional().catch(undefined),
+    options: z.string().or(z.array(z.string())).optional().catch(undefined),
   })
 
   const useNextRouterQueryWithSearch = (
@@ -289,13 +290,17 @@ describe('NextRouter', () => {
     expect(router.query.greeting).toBe(greeting)
   })
 
-  test('query keys with default value should not be stored in the url', () => {
-    const defaultSearch = ''
+  test('query keys with default value by reset should not be stored in the url', () => {
+    const defaultSearch = 'Default'
+    const defaultOptions = ['A', 'B']
 
-    router.query = { search: 'Max' }
+    router.query = { search: 'Max', options: ['X', 'Y'] }
 
     const { result } = renderHook(() =>
-      useQuery(searchSchema, { search: defaultSearch }),
+      useQuery(searchSchema, {
+        search: defaultSearch,
+        options: defaultOptions,
+      }),
     )
 
     act(() => {
@@ -303,6 +308,32 @@ describe('NextRouter', () => {
     })
 
     expect(result.current.query.search).toBe(defaultSearch)
+    expect(result.current.query.options).toStrictEqual(defaultOptions)
+    expect(router.query.search).toBeUndefined()
+  })
+
+  test('query keys with default value by set should not be stored in the url', () => {
+    const defaultSearch = 'Default'
+    const defaultOptions = ['A', 'B']
+
+    router.query = { search: 'Max', options: ['X', 'Y'] }
+
+    const { result } = renderHook(() =>
+      useQuery(searchSchema, {
+        search: defaultSearch,
+        options: defaultOptions,
+      }),
+    )
+
+    act(() => {
+      result.current.setQuery({
+        search: defaultSearch,
+        options: defaultOptions,
+      })
+    })
+
+    expect(result.current.query.search).toBe(defaultSearch)
+    expect(result.current.query.options).toStrictEqual(defaultOptions)
     expect(router.query.search).toBeUndefined()
   })
 
@@ -345,4 +376,28 @@ describe('NextRouter', () => {
     expect(result.current.query.department).toBeUndefined()
     expect(result.current.query.role).toBe(defaultRole)
   })
+
+  test('should handle array query parameters with single and multiple options', () => {
+    const optionsSchema = z.object({
+      options: z.array(z.string()),
+    })
+
+    const { result } = renderHook(() =>
+      useQuery(optionsSchema, { options: [] }),
+    )
+
+    act(() => {
+      result.current.setQuery({ options: ['A'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual(['A'])
+    expect(router.query.options).toStrictEqual(['A'])
+
+    act(() => {
+      result.current.setQuery({ options: ['A', 'B'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual(['A', 'B'])
+    expect(router.query.options).toStrictEqual(['A', 'B'])
+  })
 })
diff --git a/src/routers/__test__/reactRouter.test.tsx b/src/routers/__test__/reactRouter.test.tsx
index 7d3c5da..88a1cbd 100644
--- a/src/routers/__test__/reactRouter.test.tsx
+++ b/src/routers/__test__/reactRouter.test.tsx
@@ -20,6 +20,7 @@ describe('ReactRouter', () => {
 
   const searchSchema = z.object({
     search: z.string().optional().catch(undefined),
+    options: z.string().or(z.array(z.string())).optional().catch(undefined),
   })
 
   const useReactRouterQueryWithSearch = (
@@ -225,13 +226,17 @@ describe('ReactRouter', () => {
     )
   })
 
-  test('query keys with default value should not be stored in the url', () => {
-    const defaultSearch = ''
+  test('query keys with default value by reset should not be stored in the url', () => {
+    const defaultSearch = 'Default'
+    const defaultOptions = ['A', 'B']
 
-    window.history.pushState({}, '', `/?search=Max`)
+    window.history.pushState({}, '', `/?search=Max&options=X&options=Y`)
 
     const { result } = renderHookWithContext(() =>
-      useQuery(searchSchema, { search: defaultSearch }),
+      useQuery(searchSchema, {
+        search: defaultSearch,
+        options: defaultOptions,
+      }),
     )
 
     act(() => {
@@ -239,6 +244,32 @@ describe('ReactRouter', () => {
     })
 
     expect(result.current.query.search).toBe(defaultSearch)
+    expect(result.current.query.options).toStrictEqual(defaultOptions)
+    expect(window.location.search).toBe('')
+  })
+
+  test('query keys with default value by set should not be stored in the url', () => {
+    const defaultSearch = 'Default'
+    const defaultOptions = ['A', 'B']
+
+    window.history.pushState({}, '', `/?search=Max&options=X&options=Y`)
+
+    const { result } = renderHookWithContext(() =>
+      useQuery(searchSchema, {
+        search: defaultSearch,
+        options: defaultOptions,
+      }),
+    )
+
+    act(() => {
+      result.current.setQuery({
+        search: defaultSearch,
+        options: defaultOptions,
+      })
+    })
+
+    expect(result.current.query.search).toBe(defaultSearch)
+    expect(result.current.query.options).toStrictEqual(defaultOptions)
     expect(window.location.search).toBe('')
   })
 
@@ -256,4 +287,28 @@ describe('ReactRouter', () => {
     expect(result.current.query.search).toBe(search)
     expect(window.location.search).toBe(`?search=`)
   })
+
+  test('should handle array query parameters with single and multiple options', () => {
+    const optionsSchema = z.object({
+      options: z.string().or(z.array(z.string())),
+    })
+
+    const { result } = renderHookWithContext(() =>
+      useQuery(optionsSchema, { options: [] }),
+    )
+
+    act(() => {
+      result.current.setQuery({ options: ['A'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual('A')
+    expect(window.location.search).toBe(`?options=A`)
+
+    act(() => {
+      result.current.setQuery({ options: ['A', 'B'] })
+    })
+
+    expect(result.current.query.options).toStrictEqual(['A', 'B'])
+    expect(window.location.search).toBe(`?options=A&options=B`)
+  })
 })
diff --git a/src/routers/reactRouter.ts b/src/routers/reactRouter.ts
index 744e2ce..f522102 100644
--- a/src/routers/reactRouter.ts
+++ b/src/routers/reactRouter.ts
@@ -10,7 +10,7 @@ import {
   useAbstractQueryAndPagination,
   Router,
 } from '../engine'
-import { QUERY_ARRAY_SEPARATOR, RouterWithHistoryOptions } from './shared'
+import { RouterWithHistoryOptions } from './shared'
 
 const DEFAULT_REACT_ROUTER_OPTIONS: RouterWithHistoryOptions = {
   setQueryMethod: 'replace',
@@ -30,14 +30,10 @@ const useReactRouter = (
   const getQuery = useCallback(
     (defaultQuery: Query) => {
       const query: Query = {}
-      for (const [key, value] of new URLSearchParams(search).entries()) {
-        const decodedValues = value
-          .split(QUERY_ARRAY_SEPARATOR)
-          .map((v) => decodeURIComponent(v))
-        query[key] =
-          decodedValues.length === 1
-            ? (decodedValues[0] as string)
-            : decodedValues
+      const urlSearchParams = new URLSearchParams(search)
+      for (const key of urlSearchParams.keys()) {
+        const value = urlSearchParams.getAll(key)
+        query[key] = value.length === 1 ? (value[0] as string) : value
       }
       return { ...defaultQuery, ...query }
     },
@@ -48,19 +44,27 @@ const useReactRouter = (
     (query: Partial<Query>, defaultQuery: Query) => {
       const urlSearchParams = new URLSearchParams(search)
       for (const [key, value] of Object.entries(query)) {
-        if (value === defaultQuery[key]) {
-          urlSearchParams.delete(key)
-        } else if (value !== undefined) {
-          let values: string[]
-          if (Array.isArray(value)) {
-            values = value
+        if (value !== undefined) {
+          const defaultValue = defaultQuery[key]
+
+          if (
+            defaultValue !== undefined &&
+            value.toString() === defaultValue.toString()
+          ) {
+            urlSearchParams.delete(key)
           } else {
-            values = [value]
+            const [firstValue, ...restValues] = Array.isArray(value)
+              ? value
+              : [value]
+
+            if (firstValue !== undefined) {
+              urlSearchParams.set(key, firstValue)
+            }
+
+            for (const restValue of restValues) {
+              urlSearchParams.append(key, restValue)
+            }
           }
-          const encodedValues = values
-            .map((v) => encodeURIComponent(v))
-            .join(QUERY_ARRAY_SEPARATOR)
-          urlSearchParams.set(key, encodedValues)
         }
       }
       navigate(
diff --git a/src/routers/shared.ts b/src/routers/shared.ts
index 13971dd..8064e31 100644
--- a/src/routers/shared.ts
+++ b/src/routers/shared.ts
@@ -1,5 +1,3 @@
-export const QUERY_ARRAY_SEPARATOR = ','
-
 export type RouterWithHistoryOptions = {
   /**
    * Whether the router should push a new URL to the browser history or replace the current URL.