diff --git a/Gruntfile.js b/Gruntfile.js
index 017dab71..f22c0d23 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -15,6 +15,7 @@ module.exports = function(grunt) {
 			'src/js/scope_start.js',
 			'src/js/structure.js',
 			'src/js/tooltips.js',
+			'src/js/aria.js',
 			'src/js/pips.js',
 			'src/js/scope_helpers.js',
 			'src/js/scope_events.js',
diff --git a/concat.php b/concat.php
index 531c8922..8bbd2a4f 100644
--- a/concat.php
+++ b/concat.php
@@ -10,6 +10,7 @@
 	require 'src/js/scope_start.js';
 	require 'src/js/structure.js';
 	require 'src/js/tooltips.js';
+	require 'src/js/aria.js';
 	require 'src/js/pips.js';
 	require 'src/js/scope_helpers.js';
 	require 'src/js/scope_events.js';
diff --git a/src/js/aria.js b/src/js/aria.js
new file mode 100644
index 00000000..8639dd96
--- /dev/null
+++ b/src/js/aria.js
@@ -0,0 +1,23 @@
+
+	function aria ( ) {
+
+		bindEvent('update', function ( values, handleNumber, unencoded, tap, positions ) {
+
+			// Update Aria Values for all handles, as a change in one changes min and max values for the next.
+			scope_HandleNumbers.forEach(function( handleNumber ){
+
+				var handle = scope_Handles[handleNumber];
+
+				var min = checkHandlePosition(scope_Locations, handleNumber, 0, true, true, true);
+				var max = checkHandlePosition(scope_Locations, handleNumber, 100, true, true, true);
+
+				var now = positions[handleNumber];
+				var text = options.ariaFormat.to(unencoded[handleNumber]);
+
+				handle.children[0].setAttribute('aria-valuemin', min.toFixed(1));
+				handle.children[0].setAttribute('aria-valuemax', max.toFixed(1));
+				handle.children[0].setAttribute('aria-valuenow', now.toFixed(1));
+				handle.children[0].setAttribute('aria-valuetext', text);
+			});
+		});
+	}
diff --git a/src/js/helpers.js b/src/js/helpers.js
index 19917bea..667261ec 100644
--- a/src/js/helpers.js
+++ b/src/js/helpers.js
@@ -1,4 +1,8 @@
 
+	function isValidFormatter ( entry ) {
+		return typeof entry === 'object' && typeof entry.to === 'function' && typeof entry.from === 'function';
+	}
+
 	function removeElement ( el ) {
 		el.parentElement.removeChild(el);
 	}
diff --git a/src/js/options.js b/src/js/options.js
index 8de17cd4..34da1d67 100644
--- a/src/js/options.js
+++ b/src/js/options.js
@@ -15,6 +15,16 @@
 		return value !== undefined && value.toFixed(2);
 	}, 'from': Number };
 
+	function validateFormat ( entry ) {
+
+		// Any object with a to and from method is supported.
+		if ( isValidFormatter(entry) ) {
+			return true;
+		}
+
+		throw new Error("noUiSlider (" + VERSION + "): 'format' requires 'to' and 'from' methods.");
+	}
+
 	function testStep ( parsed, entry ) {
 
 		if ( !isNumeric( entry ) ) {
@@ -283,16 +293,14 @@
 		}
 	}
 
-	function testFormat ( parsed, entry ) {
+	function testAriaFormat ( parsed, entry ) {
+		parsed.ariaFormat = entry;
+		validateFormat(entry);
+	}
 
+	function testFormat ( parsed, entry ) {
 		parsed.format = entry;
-
-		// Any object with a to and from method is supported.
-		if ( typeof entry.to === 'function' && typeof entry.from === 'function' ) {
-			return true;
-		}
-
-		throw new Error("noUiSlider (" + VERSION + "): 'format' requires 'to' and 'from' methods.");
+		validateFormat(entry);
 	}
 
 	function testCssPrefix ( parsed, entry ) {
@@ -344,6 +352,7 @@
 			padding: 0,
 			animate: true,
 			animationDuration: 300,
+			ariaFormat: defaultFormatter,
 			format: defaultFormatter
 		};
 
@@ -362,6 +371,7 @@
 			'limit': { r: false, t: testLimit },
 			'padding': { r: false, t: testPadding },
 			'behaviour': { r: true, t: testBehaviour },
+			'ariaFormat': { r: false, t: testAriaFormat },
 			'format': { r: false, t: testFormat },
 			'tooltips': { r: false, t: testTooltips },
 			'cssPrefix': { r: false, t: testCssPrefix },
@@ -412,6 +422,11 @@
 			'useRequestAnimationFrame': true
 		};
 
+		// AriaFormat defaults to regular format, if any.
+		if ( options.format && !options.ariaFormat ) {
+			options.ariaFormat = options.format;
+		}
+
 		// Run all options through a testing mechanism to ensure correct
 		// input. It should be noted that options might get modified to
 		// be handled properly. E.g. wrapping integers in arrays.
diff --git a/src/js/scope.js b/src/js/scope.js
index e0880203..07baf389 100644
--- a/src/js/scope.js
+++ b/src/js/scope.js
@@ -1,6 +1,6 @@
 
 	// Split out the handle positioning logic so the Move event can use it, too
-	function checkHandlePosition ( reference, handleNumber, to, lookBackward, lookForward ) {
+	function checkHandlePosition ( reference, handleNumber, to, lookBackward, lookForward, getValue ) {
 
 		// For sliders with multiple handles, limit movement to the other handle.
 		// Apply the margin option by adding it to the handle positions.
@@ -48,7 +48,7 @@
 		to = limit(to);
 
 		// Return false if handle can't move
-		if ( to === reference[handleNumber] ) {
+		if ( to === reference[handleNumber] && !getValue ) {
 			return false;
 		}
 
@@ -101,7 +101,7 @@
 	// Test suggested values and apply margin, step.
 	function setHandle ( handleNumber, to, lookBackward, lookForward ) {
 
-		to = checkHandlePosition(scope_Locations, handleNumber, to, lookBackward, lookForward);
+		to = checkHandlePosition(scope_Locations, handleNumber, to, lookBackward, lookForward, false);
 
 		if ( to === false ) {
 			return false;
@@ -398,4 +398,6 @@
 		tooltips();
 	}
 
+	aria();
+
 	return scope_Self;
diff --git a/src/js/scope_helpers.js b/src/js/scope_helpers.js
index f42dfdbf..e62a3ac8 100644
--- a/src/js/scope_helpers.js
+++ b/src/js/scope_helpers.js
@@ -167,7 +167,7 @@
 
 			handleNumbers.forEach(function(handleNumber, o) {
 
-				var to = checkHandlePosition(proposals, handleNumber, proposals[handleNumber] + proposal, b[o], f[o]);
+				var to = checkHandlePosition(proposals, handleNumber, proposals[handleNumber] + proposal, b[o], f[o], false);
 
 				// Stop if one of the handles can't move.
 				if ( to === false ) {
diff --git a/src/js/structure.js b/src/js/structure.js
index d7456c38..92892e37 100644
--- a/src/js/structure.js
+++ b/src/js/structure.js
@@ -7,6 +7,12 @@
 
 		handle.setAttribute('data-handle', handleNumber);
 
+		// https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex
+		// 0 = focusable and reachable
+		handle.setAttribute('tabindex', '0');
+		handle.setAttribute('role', 'slider');
+		handle.setAttribute('aria-orientation', options.ort ? 'vertical' : 'horizontal');
+
 		if ( handleNumber === 0 ) {
 			addClass(handle, options.cssClasses.handleLower);
 		}