diff --git a/jquery/jquery-tests.ts b/jquery/jquery-tests.ts
index 27eea1c81..08e66551a 100644
--- a/jquery/jquery-tests.ts
+++ b/jquery/jquery-tests.ts
@@ -1710,6 +1710,20 @@ function test_focusout() {
     });
 }
 
+function test_easing() {
+    const easing = jQuery.easing;
+
+    function test_easing_function( name: string, fn: JQueryEasingFunction ) {
+        const step = Math.pow( 2, -3 ); // use power of 2 to prevent floating point rounding error
+        for( let i = 0; i <= 1; i += step ) {
+            console.log( `$.easing.${name}(${i}): ${fn.call(easing, i)}` );
+        }
+    }
+
+    test_easing_function( "linear", easing.linear );
+    test_easing_function( "swing", easing.swing );
+}
+
 function test_fx() {
     jQuery.fx.interval = 100;
     $("input").click(function () {
diff --git a/jquery/jquery.d.ts b/jquery/jquery.d.ts
index 29b7697b2..ff259e7fb 100644
--- a/jquery/jquery.d.ts
+++ b/jquery/jquery.d.ts
@@ -607,6 +607,16 @@ interface JQueryAnimationOptions {
     specialEasing?: Object;
 }
 
+interface JQueryEasingFunction {
+    ( percent: number ): number;
+}
+
+interface JQueryEasingFunctions {
+    [ name: string ]: JQueryEasingFunction;
+    linear: JQueryEasingFunction;
+    swing: JQueryEasingFunction;
+}
+
 /**
  * Static members of jQuery (those on $ and jQuery themselves)
  */
@@ -889,6 +899,9 @@ interface JQueryStatic {
     /**
      * Effects
      */
+
+    easing: JQueryEasingFunctions;
+
     fx: {
         tick: () => void;
         /**
diff --git a/jqueryui/jqueryui-tests.ts b/jqueryui/jqueryui-tests.ts
index 14de7019a..378c6d293 100644
--- a/jqueryui/jqueryui-tests.ts
+++ b/jqueryui/jqueryui-tests.ts
@@ -1819,3 +1819,45 @@ function test_widget() {
     $(".selector").jQuery.Widget("option", "disabled", true);
     $(".selector").jQuery.Widget("option", { disabled: true });
 }
+
+function test_easing() {
+    const easing = jQuery.easing;
+
+    function test_easing_function( name: string, fn: JQueryEasingFunction ) {
+        const step = Math.pow( 2, -3 ); // use power of 2 to prevent floating point rounding error
+        for( let i = 0; i <= 1; i += step ) {
+            console.log( `$.easing.${name}(${i}): ${fn.call(easing, i)}` );
+        }
+    }
+
+    test_easing_function("easeInQuad", easing.easeInQuad);
+    test_easing_function("easeOutQuad", easing.easeOutQuad);
+    test_easing_function("easeInOutQuad", easing.easeInOutQuad);
+    test_easing_function("easeInCubic", easing.easeInCubic);
+    test_easing_function("easeOutCubic", easing.easeOutCubic);
+    test_easing_function("easeInOutCubic", easing.easeInOutCubic);
+    test_easing_function("easeInQuart", easing.easeInQuart);
+    test_easing_function("easeOutQuart", easing.easeOutQuart);
+    test_easing_function("easeInOutQuart", easing.easeInOutQuart);
+    test_easing_function("easeInQuint", easing.easeInQuint);
+    test_easing_function("easeOutQuint", easing.easeOutQuint);
+    test_easing_function("easeInOutQuint", easing.easeInOutQuint);
+    test_easing_function("easeInExpo", easing.easeInExpo);
+    test_easing_function("easeOutExpo", easing.easeOutExpo);
+    test_easing_function("easeInOutExpo", easing.easeInOutExpo);
+    test_easing_function("easeInSine", easing.easeInSine);
+    test_easing_function("easeOutSine", easing.easeOutSine);
+    test_easing_function("easeInOutSine", easing.easeInOutSine);
+    test_easing_function("easeInCirc", easing.easeInCirc);
+    test_easing_function("easeOutCirc", easing.easeOutCirc);
+    test_easing_function("easeInOutCirc", easing.easeInOutCirc);
+    test_easing_function("easeInElastic", easing.easeInElastic);
+    test_easing_function("easeOutElastic", easing.easeOutElastic);
+    test_easing_function("easeInOutElastic", easing.easeInOutElastic);
+    test_easing_function("easeInBack", easing.easeInBack);
+    test_easing_function("easeOutBack", easing.easeOutBack);
+    test_easing_function("easeInOutBack", easing.easeInOutBack);
+    test_easing_function("easeInBounce", easing.easeInBounce);
+    test_easing_function("easeOutBounce", easing.easeOutBounce);
+    test_easing_function("easeInOutBounce", easing.easeInOutBounce);
+}
diff --git a/jqueryui/jqueryui.d.ts b/jqueryui/jqueryui.d.ts
index e93ca9301..bd494d496 100644
--- a/jqueryui/jqueryui.d.ts
+++ b/jqueryui/jqueryui.d.ts
@@ -1805,3 +1805,36 @@ interface JQueryStatic {
     widget: JQueryUI.Widget;
     Widget: JQueryUI.Widget;
 }
+
+interface JQueryEasingFunctions {
+    easeInQuad: JQueryEasingFunction;
+    easeOutQuad: JQueryEasingFunction;
+    easeInOutQuad: JQueryEasingFunction;
+    easeInCubic: JQueryEasingFunction;
+    easeOutCubic: JQueryEasingFunction;
+    easeInOutCubic: JQueryEasingFunction;
+    easeInQuart: JQueryEasingFunction;
+    easeOutQuart: JQueryEasingFunction;
+    easeInOutQuart: JQueryEasingFunction;
+    easeInQuint: JQueryEasingFunction;
+    easeOutQuint: JQueryEasingFunction;
+    easeInOutQuint: JQueryEasingFunction;
+    easeInExpo: JQueryEasingFunction;
+    easeOutExpo: JQueryEasingFunction;
+    easeInOutExpo: JQueryEasingFunction;
+    easeInSine: JQueryEasingFunction;
+    easeOutSine: JQueryEasingFunction;
+    easeInOutSine: JQueryEasingFunction;
+    easeInCirc: JQueryEasingFunction;
+    easeOutCirc: JQueryEasingFunction;
+    easeInOutCirc: JQueryEasingFunction;
+    easeInElastic: JQueryEasingFunction;
+    easeOutElastic: JQueryEasingFunction;
+    easeInOutElastic: JQueryEasingFunction;
+    easeInBack: JQueryEasingFunction;
+    easeOutBack: JQueryEasingFunction;
+    easeInOutBack: JQueryEasingFunction;
+    easeInBounce: JQueryEasingFunction;
+    easeOutBounce: JQueryEasingFunction;
+    easeInOutBounce: JQueryEasingFunction;
+}