diff --git a/adapters/oidc/js/dist/keycloak.d.ts b/adapters/oidc/js/dist/keycloak.d.ts
index 7ef865e677..fe408e6203 100644
--- a/adapters/oidc/js/dist/keycloak.d.ts
+++ b/adapters/oidc/js/dist/keycloak.d.ts
@@ -39,6 +39,19 @@ export interface KeycloakConfig {
 	clientId: string;
 }
 
+export interface Acr {
+	/**
+	 * Array of values, which will be used inside ID Token `acr` claim sent inside the `claims` parameter to Keycloak server during login.
+	 * Values should correspond to the ACR levels defined in the ACR to Loa mapping for realm or client or to the numbers (levels) inside defined
+	 * Keycloak authentication flow. See section 5.5.1 of OIDC 1.0 specification for the details.
+	 */
+	values: string[];
+	/**
+	 * This parameter specifies if ACR claims is considered essential or not.
+	 */
+	essential: boolean;
+}
+
 export interface KeycloakInitOptions {
 	/**
 	 * Adds a [cryptographic nonce](https://en.wikipedia.org/wiki/Cryptographic_nonce)
@@ -217,6 +230,11 @@ export interface KeycloakLoginOptions {
 	 */
 	loginHint?: string;
 
+	/**
+	 * Sets the `acr` claim of the ID token sent inside the `claims` parameter. See section 5.5.1 of the OIDC 1.0 specification.
+	 */
+	acr?: Acr;
+
 	/**
 	 * Used to tell Keycloak which IDP the user wants to authenticate with.
 	 */
diff --git a/adapters/oidc/js/src/keycloak.js b/adapters/oidc/js/src/keycloak.js
index db95534bec..3db6b04158 100755
--- a/adapters/oidc/js/src/keycloak.js
+++ b/adapters/oidc/js/src/keycloak.js
@@ -378,6 +378,15 @@ function Keycloak (config) {
         }
     }
 
+    function buildClaimsParameter(requestedAcr){
+        var claims = {
+            id_token: {
+                acr: requestedAcr
+            }
+        }
+        return JSON.stringify(claims);
+    }
+
     kc.createLoginUrl = function(options) {
         var state = createUUID();
         var nonce = createUUID();
@@ -445,6 +454,11 @@ function Keycloak (config) {
             url += '&ui_locales=' + encodeURIComponent(options.locale);
         }
 
+        if (options && options.acr) {
+            var claimsParameter = buildClaimsParameter(options.acr);
+            url += '&claims=' + encodeURIComponent(claimsParameter);
+        }
+
         if (kc.pkceMethod) {
             var codeVerifier = generateCodeVerifier(96);
             callbackState.pkceCodeVerifier = codeVerifier;
diff --git a/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JSObjectBuilder.java b/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JSObjectBuilder.java
index 45877b3926..23d346975a 100644
--- a/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JSObjectBuilder.java
+++ b/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JSObjectBuilder.java
@@ -1,8 +1,12 @@
 package org.keycloak.testsuite.util.javascript;
 
+import java.io.IOException;
+import java.lang.reflect.Array;
 import java.util.HashMap;
 import java.util.Map;
 
+import org.keycloak.util.JsonSerialization;
+
 /**
  * @author mhajas
  */
@@ -100,7 +104,7 @@ public class JSObjectBuilder {
     }
 
     private boolean skipQuotes(Object o) {
-        return (o instanceof Integer || o instanceof Boolean);
+        return (o instanceof Integer || o instanceof Boolean || o instanceof JSObjectBuilder);
     }
 
     public String build() {
@@ -111,11 +115,19 @@ public class JSObjectBuilder {
                     .append(option.getKey())
                     .append(" : ");
 
-            if (!skipQuotes(option.getValue())) argument.append("\"");
+            if (option.getValue().getClass().isArray()) {
+                try {
+                    argument.append(JsonSerialization.writeValueAsString(option.getValue()));
+                } catch (IOException ioe) {
+                    throw new IllegalArgumentException("Not possible to serialize value of the option " + option.getKey(), ioe);
+                }
+            } else {
+                if (!skipQuotes(option.getValue())) argument.append("\"");
 
-            argument.append(option.getValue());
+                argument.append(option.getValue());
 
-            if (!skipQuotes(option.getValue())) argument.append("\"");
+                if (!skipQuotes(option.getValue())) argument.append("\"");
+            }
             comma = ",";
         }
 
@@ -124,5 +136,8 @@ public class JSObjectBuilder {
         return argument.toString();
     }
 
-
+    @Override
+    public String toString() {
+        return build();
+    }
 }
diff --git a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
index a1669b9c19..2be9199be5 100644
--- a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
+++ b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
@@ -9,8 +9,12 @@ import org.keycloak.OAuth2Constants;
 import org.keycloak.admin.client.resource.ClientResource;
 import org.keycloak.common.Profile;
 import org.keycloak.common.util.Retry;
+import org.keycloak.common.util.UriUtils;
 import org.keycloak.events.Details;
 import org.keycloak.events.EventType;
+import org.keycloak.protocol.oidc.OIDCLoginProtocol;
+import org.keycloak.representations.ClaimsRepresentation;
+import org.keycloak.representations.IDToken;
 import org.keycloak.representations.idm.ClientRepresentation;
 import org.keycloak.representations.idm.EventRepresentation;
 import org.keycloak.representations.idm.RealmRepresentation;
@@ -33,11 +37,14 @@ import org.keycloak.testsuite.util.javascript.JSObjectBuilder;
 import org.keycloak.testsuite.util.javascript.JavascriptStateValidator;
 import org.keycloak.testsuite.util.javascript.JavascriptTestExecutor;
 import org.keycloak.testsuite.util.javascript.XMLHttpRequest;
+import org.keycloak.util.JsonSerialization;
 import org.openqa.selenium.TimeoutException;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebDriverException;
 import org.openqa.selenium.WebElement;
 
+import java.io.IOException;
+import java.net.URL;
 import java.util.List;
 import java.util.Map;
 
@@ -498,6 +505,52 @@ public class JavascriptAdapterTest extends AbstractJavascriptTest {
         });
     }
 
+    /**
+     * Test for acr handling via {@code loginOptions}: <pre>{@code
+     * Keycloak keycloak = new Keycloak(); keycloak.login({.... acr: { values: ["foo", "bar"], essential: false}})
+     * }</pre>
+     */
+    @Test
+    public void testAcrInLoginOptionsShouldBeConsideredByLoginUrl() {
+        // Test when no "acr" option given. Claims parameter won't be passed to Keycloak server
+        testExecutor.configure().init(defaultArguments());
+        JSObjectBuilder loginOptions = JSObjectBuilder.create();
+
+        testExecutor.login(loginOptions, (JavascriptStateValidator) (driver, output, events) -> {
+            try {
+                String queryString = new URL(driver.getCurrentUrl()).getQuery();
+                String claimsParam = UriUtils.decodeQueryString(queryString).getFirst(OIDCLoginProtocol.CLAIMS_PARAM);
+                Assert.assertNull(claimsParam);
+            } catch (IOException ioe) {
+                throw new AssertionError(ioe);
+            }
+        });
+
+        // Test given "acr" option will be translated into the "claims" parameter passed to Keycloak server
+        jsDriver.navigate().to(testAppUrl);
+        testExecutor.configure().init(defaultArguments());
+
+        JSObjectBuilder acr1 = JSObjectBuilder.create()
+                .add("values", new String[] {"foo", "bar"})
+                .add("essential", false);
+        loginOptions = JSObjectBuilder.create().add("acr", acr1);
+
+        testExecutor.login(loginOptions, (JavascriptStateValidator) (driver, output, events) -> {
+            try {
+                String queryString = new URL(driver.getCurrentUrl()).getQuery();
+                String claimsParam = UriUtils.decodeQueryString(queryString).getFirst(OIDCLoginProtocol.CLAIMS_PARAM);
+                Assert.assertNotNull(claimsParam);
+
+                ClaimsRepresentation claimsRep = JsonSerialization.readValue(claimsParam, ClaimsRepresentation.class);
+                ClaimsRepresentation.ClaimValue<String> claimValue = claimsRep.getClaimValue(IDToken.ACR, ClaimsRepresentation.ClaimContext.ID_TOKEN, String.class);
+                Assert.assertNames(claimValue.getValues(), "foo", "bar");
+                Assert.assertThat(claimValue.isEssential(), is(false));
+            } catch (IOException ioe) {
+                throw new AssertionError(ioe);
+            }
+        });
+    }
+
     @Test
     public void testUpdateToken() {
         XMLHttpRequest request = XMLHttpRequest.create()