diff --git a/HISTORY.md b/HISTORY.md
index 3f5c295..106a36c 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,7 @@
 unreleased
 ==========
-
+  * Added `simplifyFileSize` option
+  * deps: bytes@~3.1.2
   * Fix icons for MIME types with `+`
   * Fix text and json responses to match html sorting
   * Show font icon for more font types
diff --git a/README.md b/README.md
index f720b0d..9b0a266 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,16 @@ provided locals:
 
 Display mode. `tiles` and `details` are available. Defaults to `tiles`.
 
+##### simplifyFileSize
+
+Configures the unit in the size. Defaults to `false`.
+
+By default, the size is display only in bytes. 
+
+Set it to `true` and it will try to automatically simplify the size to 
+the highest possible unit from the following to two decimal places.
+- KB, MB, GB, TB, PB
+
 ## Examples
 
 ### Serve directory indexes with vanilla node.js http server
diff --git a/index.js b/index.js
index e95390e..d5285da 100644
--- a/index.js
+++ b/index.js
@@ -27,6 +27,7 @@ var Batch = require('batch');
 var mime = require('mime-types');
 var parseUrl = require('parseurl');
 var resolve = require('path').resolve;
+var bytes = require('bytes');
 
 /**
  * Module exports.
@@ -97,6 +98,7 @@ function serveIndex(root, options) {
   var stylesheet = opts.stylesheet || defaultStylesheet;
   var template = opts.template || defaultTemplate;
   var view = opts.view || 'tiles';
+  var simplifyFileSize = opts.simplifyFileSize;
 
   return function (req, res, next) {
     if (req.method !== 'GET' && req.method !== 'HEAD') {
@@ -164,7 +166,7 @@ function serveIndex(root, options) {
 
         // not acceptable
         if (!type) return next(createError(406));
-        serveIndex[mediaType[type]](req, res, files, next, originalDir, showUp, icons, path, view, template, stylesheet);
+        serveIndex[mediaType[type]](req, res, files, next, originalDir, showUp, icons, path, view, template, stylesheet, simplifyFileSize);
       });
     });
   };
@@ -174,7 +176,7 @@ function serveIndex(root, options) {
  * Respond with text/html.
  */
 
-serveIndex.html = function _html(req, res, files, next, dir, showUp, icons, path, view, template, stylesheet) {
+serveIndex.html = function _html(req, res, files, next, dir, showUp, icons, path, view, template, stylesheet, simplifyFileSize) {
   var render = typeof template !== 'function'
     ? createHtmlRender(template)
     : template
@@ -201,7 +203,8 @@ serveIndex.html = function _html(req, res, files, next, dir, showUp, icons, path
         fileList: fileList,
         path: path,
         style: style,
-        viewName: view
+        viewName: view,
+        simplifyFileSize:Boolean(simplifyFileSize)
       };
 
       // render html
@@ -260,7 +263,7 @@ serveIndex.plain = function _plain (req, res, files, next, dir, showUp, icons, p
  * @private
  */
 
-function createHtmlFileList(files, dir, useIcons, view) {
+function createHtmlFileList(files, dir, useIcons, view, simplifyFileSize) {
   var html = '<ul id="files" class="view-' + escapeHtml(view) + '">'
     + (view === 'details' ? (
       '<li class="header">'
@@ -301,6 +304,10 @@ function createHtmlFileList(files, dir, useIcons, view) {
       ? file.stat.size
       : '';
 
+    if(simplifyFileSize && size !== ''){
+      size = bytes(size, {unitSeparator: ' '})
+    }
+
     return '<li><a href="'
       + escapeHtml(normalizeSlashes(normalize(path.join('/'))))
       + '" class="' + escapeHtml(classes.join(' ')) + '"'
@@ -328,7 +335,7 @@ function createHtmlRender(template) {
 
       var body = str
         .replace(/\{style\}/g, locals.style.concat(iconStyle(locals.fileList, locals.displayIcons)))
-        .replace(/\{files\}/g, createHtmlFileList(locals.fileList, locals.directory, locals.displayIcons, locals.viewName))
+        .replace(/\{files\}/g, createHtmlFileList(locals.fileList, locals.directory, locals.displayIcons, locals.viewName, locals.simplifyFileSize))
         .replace(/\{directory\}/g, escapeHtml(locals.directory))
         .replace(/\{linked-path\}/g, htmlPath(locals.directory));
 
diff --git a/package.json b/package.json
index c7f520e..9705d89 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   "dependencies": {
     "accepts": "~1.3.7",
     "batch": "0.6.1",
+    "bytes": "~3.1.2",
     "debug": "2.6.9",
     "escape-html": "~1.0.3",
     "http-errors": "~1.8.0",
@@ -37,4 +38,4 @@
     "test-ci": "nyc --reporter=lcov --reporter=text npm test",
     "test-cov": "nyc --reporter=html --reporter=text npm test"
   }
-}
\ No newline at end of file
+}
diff --git a/test/fixtures/collect/sample b/test/fixtures/collect/sample
index e69de29..30106d4 100644
--- a/test/fixtures/collect/sample
+++ b/test/fixtures/collect/sample
@@ -0,0 +1 @@
+12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
\ No newline at end of file
diff --git a/test/test.js b/test/test.js
index c1509a4..4b267a5 100644
--- a/test/test.js
+++ b/test/test.js
@@ -395,6 +395,33 @@ describe('serveIndex(root)', function () {
     });
   });
 
+  describe('with "simplifyFileSize" option', function () {
+    it('should simplify file sizes', function (done) {
+      var server = createServer(fixtures, {'simplifyFileSize': true})
+
+      request(server)
+        .get('/collect')
+        .expect(/1\.07 KB/)
+        .expect(200, done)
+    });
+    it('should not simplify file sizes', function (done) {
+      var server = createServer(fixtures, {'simplifyFileSize': false})
+
+      request(server)
+        .get('/collect')
+        .expect(/1100/)
+        .expect(200, done)
+    });
+    it('should not simplify file sizes by default', function (done) {
+      var server = createServer(fixtures)
+
+      request(server)
+        .get('/collect')
+        .expect(/1100/)
+        .expect(200, done)
+    });
+  });
+
   describe('with "template" option', function () {
     describe('when setting a custom template file', function () {
       var server;