diff --git a/AIPscan/Data/fields.py b/AIPscan/Data/fields.py
index 7222ce54..00a9e346 100644
--- a/AIPscan/Data/fields.py
+++ b/AIPscan/Data/fields.py
@@ -53,6 +53,7 @@
 FIELD_RELATED_PAIRING = "RelatedPairing"
 
 FIELD_SIZE = "Size"
+FIELD_SIZE_BYTES = "SizeBytes"
 FIELD_STORAGE_LOCATION = "StorageLocation"
 FIELD_STORAGE_NAME = "StorageName"
 
diff --git a/AIPscan/Reporter/helpers.py b/AIPscan/Reporter/helpers.py
index 8de8ea3a..39aabd79 100644
--- a/AIPscan/Reporter/helpers.py
+++ b/AIPscan/Reporter/helpers.py
@@ -28,7 +28,7 @@ def sort_puids(puids):
     return natsorted(puids)
 
 
-def translate_headers(headers):
+def translate_headers(headers, add_bytes_column=False):
     """Translate headers from something machine readable to something
     more user friendly and translatable.
     """
@@ -69,6 +69,22 @@ def translate_headers(headers):
         fields.FIELD_USER: "User",
         fields.FIELD_VERSION: "Version",
     }
+
+    # Attempt to add an additional header representing a column containing size
+    # expressed as a number of bytes, rather than in human-readable form, so
+    # rows can more easily be sorted by size
+    if add_bytes_column:
+        headers = (
+            headers.copy()
+        )  # So we don't change the list object passed to this function
+
+        # Handle the two standard size columns
+        for header in [fields.FIELD_AIP_SIZE, fields.FIELD_SIZE]:
+            # If size header is found then insert another for the size in bytes afer it
+            if header in headers:
+                bytes_header = field_lookup[header] + " (bytes)"
+                headers.insert(headers.index(header) + 1, bytes_header)
+
     return [field_lookup.get(header, header) for header in headers]
 
 
@@ -89,12 +105,27 @@ def format_size_for_csv(rows):
 
     :returns: rows with formatted size field (list of dicts)
     """
+    edited_rows = []
+
     for row in rows:
-        try:
+        # Add size in bytes after original size column
+        row_key_list = list(row.keys())
+
+        if fields.FIELD_SIZE in row_key_list:
+            size_position = row_key_list.index(fields.FIELD_SIZE) + 1
+            row_items = list(row.items())
+
+            row_items.insert(
+                size_position, (fields.FIELD_SIZE_BYTES, row[fields.FIELD_SIZE])
+            )
+            row = dict(row_items)
+
+            # Format original size column
             row[fields.FIELD_SIZE] = filesizeformat(row[fields.FIELD_SIZE])
-        except KeyError:
-            pass
-    return rows
+
+        edited_rows.append(row)
+
+    return edited_rows
 
 
 def download_csv(headers, rows, filename="report.csv"):
diff --git a/AIPscan/Reporter/report_aip_contents.py b/AIPscan/Reporter/report_aip_contents.py
index b911b9ac..c8a515a5 100644
--- a/AIPscan/Reporter/report_aip_contents.py
+++ b/AIPscan/Reporter/report_aip_contents.py
@@ -22,7 +22,7 @@
     fields.FIELD_FORMATS,
 ]
 
-HEADERS = [
+TABLE_HEADERS = [
     fields.FIELD_AIP_NAME,
     fields.FIELD_CREATED_DATE,
     fields.FIELD_SIZE,
@@ -110,8 +110,9 @@ def aip_contents():
     )
 
     if csv:
+        headers = translate_headers(CSV_HEADERS, True)
+
         filename = "aip_contents.csv"
-        headers = translate_headers(CSV_HEADERS)
         aips = _create_aip_formats_string_representation(
             aip_data.get(fields.FIELD_AIPS), separator="|"
         )
@@ -120,12 +121,14 @@ def aip_contents():
 
     aips = _create_aip_formats_string_representation(aip_data.get(fields.FIELD_AIPS))
 
+    headers = translate_headers(TABLE_HEADERS)
+
     return render_template(
         "report_aip_contents.html",
         storage_service=storage_service_id,
         storage_service_name=aip_data.get(fields.FIELD_STORAGE_NAME),
         storage_location_description=aip_data.get(fields.FIELD_STORAGE_LOCATION),
-        columns=translate_headers(HEADERS),
+        columns=headers,
         aips=aip_data.get(fields.FIELD_AIPS),
         start_date=start_date,
         end_date=get_display_end_date(end_date),
diff --git a/AIPscan/Reporter/report_aips_by_format.py b/AIPscan/Reporter/report_aips_by_format.py
index e923a797..a03b897c 100644
--- a/AIPscan/Reporter/report_aips_by_format.py
+++ b/AIPscan/Reporter/report_aips_by_format.py
@@ -28,8 +28,6 @@ def aips_by_format():
     original_files = parse_bool(request.args.get(request_params.ORIGINAL_FILES, True))
     csv = parse_bool(request.args.get(request_params.CSV), default=False)
 
-    headers = translate_headers(HEADERS)
-
     aip_data = report_data.aips_by_file_format(
         storage_service_id=storage_service_id,
         file_format=file_format,
@@ -38,10 +36,14 @@ def aips_by_format():
     )
 
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "aips_by_file_format_{}.csv".format(file_format)
         csv_data = format_size_for_csv(aip_data[fields.FIELD_AIPS])
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_aips_by_format.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_aips_by_puid.py b/AIPscan/Reporter/report_aips_by_puid.py
index 2da5a22b..14bf14cd 100644
--- a/AIPscan/Reporter/report_aips_by_puid.py
+++ b/AIPscan/Reporter/report_aips_by_puid.py
@@ -53,8 +53,6 @@ def aips_by_puid():
     original_files = parse_bool(request.args.get(request_params.ORIGINAL_FILES, True))
     csv = parse_bool(request.args.get(request_params.CSV), default=False)
 
-    headers = translate_headers(HEADERS)
-
     aip_data = report_data.aips_by_puid(
         storage_service_id=storage_service_id,
         puid=puid,
@@ -63,10 +61,14 @@ def aips_by_puid():
     )
 
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "aips_by_puid_{}.csv".format(puid)
         csv_data = format_size_for_csv(aip_data[fields.FIELD_AIPS])
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_aips_by_puid.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_format_versions_count.py b/AIPscan/Reporter/report_format_versions_count.py
index f0642979..f51645e1 100644
--- a/AIPscan/Reporter/report_format_versions_count.py
+++ b/AIPscan/Reporter/report_format_versions_count.py
@@ -41,13 +41,15 @@ def report_format_versions_count():
     )
     versions = version_data.get(fields.FIELD_FORMAT_VERSIONS)
 
-    headers = translate_headers(HEADERS)
-
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "format_versions.csv"
         csv_data = format_size_for_csv(versions)
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_format_versions_count.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_formats_count.py b/AIPscan/Reporter/report_formats_count.py
index bd65c87c..d884647a 100644
--- a/AIPscan/Reporter/report_formats_count.py
+++ b/AIPscan/Reporter/report_formats_count.py
@@ -51,13 +51,15 @@ def report_formats_count():
     )
     formats = formats_data.get(fields.FIELD_FORMATS)
 
-    headers = translate_headers(HEADERS)
-
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "file_formats.csv"
         csv_data = format_size_for_csv(formats)
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_formats_count.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_largest_aips.py b/AIPscan/Reporter/report_largest_aips.py
index 614f60d6..8337a7f4 100644
--- a/AIPscan/Reporter/report_largest_aips.py
+++ b/AIPscan/Reporter/report_largest_aips.py
@@ -35,8 +35,6 @@ def largest_aips():
         pass
     csv = parse_bool(request.args.get(request_params.CSV), default=False)
 
-    headers = translate_headers(HEADERS)
-
     aip_data = report_data.largest_aips(
         storage_service_id=storage_service_id,
         start_date=start_date,
@@ -46,11 +44,14 @@ def largest_aips():
     )
 
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "largest_aips.csv"
-        headers = translate_headers(HEADERS)
         csv_data = format_size_for_csv(aip_data[fields.FIELD_AIPS])
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_largest_aips.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_largest_files.py b/AIPscan/Reporter/report_largest_files.py
index 87e138f0..1dc9178a 100644
--- a/AIPscan/Reporter/report_largest_files.py
+++ b/AIPscan/Reporter/report_largest_files.py
@@ -13,7 +13,7 @@
     translate_headers,
 )
 
-HEADERS = [
+TABLE_HEADERS = [
     fields.FIELD_FILENAME,
     fields.FIELD_SIZE,
     fields.FIELD_FORMAT,
@@ -52,8 +52,6 @@ def largest_files():
         pass
     csv = parse_bool(request.args.get(request_params.CSV), default=False)
 
-    headers = translate_headers(HEADERS)
-
     file_data = report_data.largest_files(
         storage_service_id=storage_service_id,
         start_date=start_date,
@@ -64,11 +62,14 @@ def largest_files():
     )
 
     if csv:
+        headers = translate_headers(CSV_HEADERS, True)
+
         filename = "largest_files.csv"
-        headers = translate_headers(CSV_HEADERS)
         csv_data = format_size_for_csv(file_data[fields.FIELD_FILES])
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(TABLE_HEADERS)
+
     return render_template(
         "report_largest_files.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/report_storage_locations.py b/AIPscan/Reporter/report_storage_locations.py
index 654ffbe3..73d14793 100644
--- a/AIPscan/Reporter/report_storage_locations.py
+++ b/AIPscan/Reporter/report_storage_locations.py
@@ -38,18 +38,20 @@ def storage_locations():
     )
     csv = parse_bool(request.args.get(request_params.CSV), default=False)
 
-    headers = translate_headers(HEADERS)
-
     locations_data = report_data.storage_locations(
         storage_service_id=storage_service_id, start_date=start_date, end_date=end_date
     )
     locations = locations_data.get(fields.FIELD_LOCATIONS)
 
     if csv:
+        headers = translate_headers(HEADERS, True)
+
         filename = "storage_locations.csv"
         csv_data = format_size_for_csv(locations)
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_storage_locations.html",
         storage_service_id=storage_service_id,
diff --git a/AIPscan/Reporter/tests/test_aip_contents.py b/AIPscan/Reporter/tests/test_aip_contents.py
index e7229b28..2cacef99 100644
--- a/AIPscan/Reporter/tests/test_aip_contents.py
+++ b/AIPscan/Reporter/tests/test_aip_contents.py
@@ -1,6 +1,6 @@
 from flask import current_app
 
-EXPECTED_CSV_CONTENTS = b"UUID,AIP Name,Created Date,Size,Formats\r\n111111111111-1111-1111-11111111,Test AIP,2020-01-01 00:00:00,0 Bytes,fmt/43 (ACME File Format 0.0.0): 1 file|fmt/61 (ACME File Format 0.0.0): 1 file\r\n222222222222-2222-2222-22222222,Test AIP,2020-06-01 00:00:00,0 Bytes,x-fmt/111 (ACME File Format 0.0.0): 3 files|fmt/61 (ACME File Format 0.0.0): 2 files\r\n"
+EXPECTED_CSV_CONTENTS = b"UUID,AIP Name,Created Date,Size,Size (bytes),Formats\r\n111111111111-1111-1111-11111111,Test AIP,2020-01-01 00:00:00,0 Bytes,0,fmt/43 (ACME File Format 0.0.0): 1 file|fmt/61 (ACME File Format 0.0.0): 1 file\r\n222222222222-2222-2222-22222222,Test AIP,2020-06-01 00:00:00,0 Bytes,0,x-fmt/111 (ACME File Format 0.0.0): 3 files|fmt/61 (ACME File Format 0.0.0): 2 files\r\n"
 
 
 def test_aip_contents(aip_contents):
diff --git a/AIPscan/Reporter/tests/test_aips_by_file_format.py b/AIPscan/Reporter/tests/test_aips_by_file_format.py
index 8e6371a7..dc23946e 100644
--- a/AIPscan/Reporter/tests/test_aips_by_file_format.py
+++ b/AIPscan/Reporter/tests/test_aips_by_file_format.py
@@ -1,12 +1,8 @@
 import pytest
 from flask import current_app
 
-EXPECTED_CSV_ORIGINAL = (
-    b"AIP Name,UUID,Count,Size\r\nTest AIP,111111111111-1111-1111-11111111,1,1.0 kB\r\n"
-)
-EXPECTED_CSV_PRESERVATION = (
-    b"AIP Name,UUID,Count,Size\r\nTest AIP,111111111111-1111-1111-11111111,1,2.0 kB\r\n"
-)
+EXPECTED_CSV_ORIGINAL = b"AIP Name,UUID,Count,Size,Size (bytes)\r\nTest AIP,111111111111-1111-1111-11111111,1,1.0 kB,1000\r\n"
+EXPECTED_CSV_PRESERVATION = b"AIP Name,UUID,Count,Size,Size (bytes)\r\nTest AIP,111111111111-1111-1111-11111111,1,2.0 kB,2000\r\n"
 
 
 @pytest.mark.parametrize(
diff --git a/AIPscan/Reporter/tests/test_aips_by_puid.py b/AIPscan/Reporter/tests/test_aips_by_puid.py
index c11a2d57..f3489dcd 100644
--- a/AIPscan/Reporter/tests/test_aips_by_puid.py
+++ b/AIPscan/Reporter/tests/test_aips_by_puid.py
@@ -7,12 +7,8 @@
 from AIPscan.models import File, FileType
 from AIPscan.Reporter.report_aips_by_puid import get_format_string_from_puid
 
-EXPECTED_CSV_ORIGINAL = (
-    b"AIP Name,UUID,Count,Size\r\nTest AIP,111111111111-1111-1111-11111111,1,1.0 kB\r\n"
-)
-EXPECTED_CSV_PRESERVATION = (
-    b"AIP Name,UUID,Count,Size\r\nTest AIP,111111111111-1111-1111-11111111,1,2.0 kB\r\n"
-)
+EXPECTED_CSV_ORIGINAL = b"AIP Name,UUID,Count,Size,Size (bytes)\r\nTest AIP,111111111111-1111-1111-11111111,1,1.0 kB,1000\r\n"
+EXPECTED_CSV_PRESERVATION = b"AIP Name,UUID,Count,Size,Size (bytes)\r\nTest AIP,111111111111-1111-1111-11111111,1,2.0 kB,2000\r\n"
 
 FILE_WITH_FORMAT_ONLY = File(
     uuid=uuid.uuid4(),
diff --git a/AIPscan/Reporter/tests/test_format_versions_count.py b/AIPscan/Reporter/tests/test_format_versions_count.py
index 8f627dcc..b4c9ae57 100644
--- a/AIPscan/Reporter/tests/test_format_versions_count.py
+++ b/AIPscan/Reporter/tests/test_format_versions_count.py
@@ -1,6 +1,6 @@
 from flask import current_app
 
-EXPECTED_CSV_CONTENTS = b"PUID,Format,Version,Count,Size\r\nfmt/44,JPEG,1.02,1,2.0 kB\r\nfmt/43,JPEG,1.01,1,1.0 kB\r\nfmt/468,ISO Disk Image File,,1,0 Bytes\r\n"
+EXPECTED_CSV_CONTENTS = b"PUID,Format,Version,Count,Size,Size (bytes)\r\nfmt/44,JPEG,1.02,1,2.0 kB,2000\r\nfmt/43,JPEG,1.01,1,1.0 kB,1000\r\nfmt/468,ISO Disk Image File,,1,0 Bytes,0\r\n"
 
 
 def test_format_versions_count(app_with_populated_format_versions):
diff --git a/AIPscan/Reporter/tests/test_formats_count.py b/AIPscan/Reporter/tests/test_formats_count.py
index 68956a14..dc44045f 100644
--- a/AIPscan/Reporter/tests/test_formats_count.py
+++ b/AIPscan/Reporter/tests/test_formats_count.py
@@ -1,8 +1,6 @@
 from flask import current_app
 
-EXPECTED_CSV_CONTENTS = (
-    b"Format,Count,Size\r\nJPEG,2,3.0 kB\r\nISO Disk Image File,1,0 Bytes\r\n"
-)
+EXPECTED_CSV_CONTENTS = b"Format,Count,Size,Size (bytes)\r\nJPEG,2,3.0 kB,3000\r\nISO Disk Image File,1,0 Bytes,0\r\n"
 
 
 def test_formats_count(app_with_populated_format_versions):
diff --git a/AIPscan/Reporter/tests/test_helpers.py b/AIPscan/Reporter/tests/test_helpers.py
index 3b7bfb6d..c177412b 100644
--- a/AIPscan/Reporter/tests/test_helpers.py
+++ b/AIPscan/Reporter/tests/test_helpers.py
@@ -13,7 +13,8 @@
 from AIPscan.Data.tests import MOCK_STORAGE_SERVICE_ID as STORAGE_SERVICE_ID
 from AIPscan.models import File, FileType
 from AIPscan.Reporter import helpers
-from AIPscan.Reporter.report_aips_by_format import HEADERS
+from AIPscan.Reporter.report_aip_contents import CSV_HEADERS as AIP_CONTENTS_HEADERS
+from AIPscan.Reporter.report_aips_by_format import HEADERS as AIPS_BY_FORMAT_HEADERS
 
 ROWS_WITH_SIZE = [
     {
@@ -33,11 +34,13 @@
         fields.FIELD_AIP_UUID: "test uuid",
         fields.FIELD_AIP_NAME: "test name",
         fields.FIELD_SIZE: "1.6 MB",
+        fields.FIELD_SIZE_BYTES: 1560321,
     },
     {
         fields.FIELD_AIP_UUID: "test uuid2",
         fields.FIELD_AIP_NAME: "test name2",
         fields.FIELD_SIZE: "123.4 kB",
+        fields.FIELD_SIZE_BYTES: 123423,
     },
 ]
 
@@ -62,7 +65,7 @@ def test_download_csv(app_instance, mocker):
     mock_get_ss_name = mocker.patch("AIPscan.Data._get_storage_service")
     mock_get_ss_name.return_value = STORAGE_SERVICE
 
-    headers = helpers.translate_headers(HEADERS)
+    headers = helpers.translate_headers(AIPS_BY_FORMAT_HEADERS)
 
     report_data = aips_by_file_format(STORAGE_SERVICE_ID, "test")
     response = helpers.download_csv(headers, report_data[fields.FIELD_AIPS], CSV_FILE)
@@ -93,6 +96,32 @@ def test_download_csv(app_instance, mocker):
     assert line_count == len(query_results) + 1
 
 
+@pytest.mark.parametrize(
+    "data,expected_output",
+    [
+        # No adding of header for size in bytes
+        (
+            {"headers": AIPS_BY_FORMAT_HEADERS, "add_bytes_column": False},
+            ["AIP Name", "UUID", "Count", "Size"],
+        ),
+        # Adding of header for size in bytes at end of header list
+        (
+            {"headers": AIPS_BY_FORMAT_HEADERS, "add_bytes_column": True},
+            ["AIP Name", "UUID", "Count", "Size", "Size (bytes)"],
+        ),
+        # Adding of header for size in bytes not at end of header list
+        (
+            {"headers": AIP_CONTENTS_HEADERS, "add_bytes_column": True},
+            ["UUID", "AIP Name", "Created Date", "Size", "Size (bytes)", "Formats"],
+        ),
+    ],
+)
+def test_translate_headers(data, expected_output):
+    headers = helpers.translate_headers(data["headers"], data["add_bytes_column"])
+
+    assert headers == expected_output
+
+
 @pytest.mark.parametrize(
     "data,expected_output",
     [
diff --git a/AIPscan/Reporter/tests/test_largest_aips.py b/AIPscan/Reporter/tests/test_largest_aips.py
index 82232597..0557572c 100644
--- a/AIPscan/Reporter/tests/test_largest_aips.py
+++ b/AIPscan/Reporter/tests/test_largest_aips.py
@@ -1,6 +1,6 @@
 from flask import current_app
 
-EXPECTED_CSV_CONTENTS = b"AIP Name,UUID,AIP Size,File Count\r\nTest AIP,111111111111-1111-1111-11111111,100 Bytes,1\r\nTest AIP,222222222222-2222-2222-22222222,100 Bytes,2\r\n"
+EXPECTED_CSV_CONTENTS = b"AIP Name,UUID,AIP Size,AIP Size (bytes),File Count\r\nTest AIP,111111111111-1111-1111-11111111,100 Bytes,100,1\r\nTest AIP,222222222222-2222-2222-22222222,100 Bytes,100,2\r\n"
 
 
 def test_largest_aips(app_with_populated_format_versions):
diff --git a/AIPscan/Reporter/tests/test_largest_files.py b/AIPscan/Reporter/tests/test_largest_files.py
index ed068034..2fbae978 100644
--- a/AIPscan/Reporter/tests/test_largest_files.py
+++ b/AIPscan/Reporter/tests/test_largest_files.py
@@ -1,6 +1,6 @@
 from flask import current_app
 
-EXPECTED_CSV_CONTENTS = b"UUID,Filename,Size,Type,Format,Version,PUID,AIP Name,AIP UUID\r\n555555555555-5555-5555-55555555,preservation.jpg,2.0 kB,original,JPEG,1.02,fmt/44,Test AIP,222222222222-2222-2222-22222222\r\n333333333333-3333-3333-33333333,original.jpg,1.0 kB,original,JPEG,1.01,fmt/43,Test AIP,111111111111-1111-1111-11111111\r\n444444444444-4444-4444-44444444,original.iso,0 Bytes,original,ISO Disk Image File,,fmt/468,Test AIP,222222222222-2222-2222-22222222\r\n"
+EXPECTED_CSV_CONTENTS = b"UUID,Filename,Size,Size (bytes),Type,Format,Version,PUID,AIP Name,AIP UUID\r\n555555555555-5555-5555-55555555,preservation.jpg,2.0 kB,2000,original,JPEG,1.02,fmt/44,Test AIP,222222222222-2222-2222-22222222\r\n333333333333-3333-3333-33333333,original.jpg,1.0 kB,1000,original,JPEG,1.01,fmt/43,Test AIP,111111111111-1111-1111-11111111\r\n444444444444-4444-4444-44444444,original.iso,0 Bytes,0,original,ISO Disk Image File,,fmt/468,Test AIP,222222222222-2222-2222-22222222\r\n"
 
 
 def test_largest_files(app_with_populated_format_versions):
diff --git a/AIPscan/Reporter/tests/test_storage_locations.py b/AIPscan/Reporter/tests/test_storage_locations.py
index 5c710b4f..83abcacc 100644
--- a/AIPscan/Reporter/tests/test_storage_locations.py
+++ b/AIPscan/Reporter/tests/test_storage_locations.py
@@ -6,7 +6,7 @@
 SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
 FIXTURES_DIR = os.path.join(SCRIPT_DIR, "fixtures")
 
-EXPECTED_CSV_CONTENTS = b"UUID,Location,AIPs,Size,File Count\r\n2bbcea40-eb4d-4076-a81d-1ab046e34f6a,AIP Store Location 1,2,1.6 kB,3\r\ne69beb57-0e32-4c45-8db7-9b7723724a05,AIP Store Location 2,1,5.0 kB,2\r\n"
+EXPECTED_CSV_CONTENTS = b"UUID,Location,AIPs,Size,Size (bytes),File Count\r\n2bbcea40-eb4d-4076-a81d-1ab046e34f6a,AIP Store Location 1,2,1.6 kB,1600,3\r\ne69beb57-0e32-4c45-8db7-9b7723724a05,AIP Store Location 2,1,5.0 kB,5000,2\r\n"
 
 
 def test_storage_locations(storage_locations):
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 76ca719d..9805ece3 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -280,13 +280,19 @@ def report_format_versions_count():
     )
     versions = version_data.get(fields.FIELD_FORMAT_VERSIONS)
 
-    headers = translate_headers(HEADERS)
-
     if csv:
+        # Using the translate_headers function's "True" argument will
+        # have it automatically add an additional size column with the size
+        # data left as the number of bytes, rather than a more human readable
+        # description of the size, to make it easier to sort CSV rows by size
+        headers = translate_headers(HEADERS, True)
+
         filename = "format_versions.csv"
         csv_data = format_size_for_csv(versions)
         return download_csv(headers, csv_data, filename)
 
+    headers = translate_headers(HEADERS)
+
     return render_template(
         "report_format_versions_count.html",
         storage_service_id=storage_service_id,