diff --git a/test/tarantool-tests/gh-5994-memprof-human-readable.test.lua b/test/tarantool-tests/gh-5994-memprof-human-readable.test.lua
new file mode 100644
index 0000000000..e34291beb1
--- /dev/null
+++ b/test/tarantool-tests/gh-5994-memprof-human-readable.test.lua
@@ -0,0 +1,73 @@
+local tap = require('tap')
+local test = tap.test('gh-5994-memprof-human-readable'):skipcond({
+  ['Profile tools are implemented for x86_64 only'] = jit.arch ~= 'x86' and
+                                                      jit.arch ~= 'x64',
+  ['Profile tools are implemented for Linux only'] = jit.os ~= 'Linux',
+  -- XXX: Tarantool integration is required to run this test properly.
+  -- luacheck: no global
+  ['No profile tools CLI option integration'] = _TARANTOOL,
+})
+
+local utils = require('utils')
+local TMP_BINFILE_MEMPROF = utils.tools.profilename('memprofdata.tmp.bin')
+local PARSE_CMD = utils.exec.luacmd(arg) .. ' -tm '
+
+local function generate_output(bytes)
+  local res, err = misc.memprof.start(TMP_BINFILE_MEMPROF)
+  -- Should start successfully.
+  assert(res, err)
+
+  -- luacheck: no unused
+  local _ = string.rep('_', bytes)
+
+  res, err = misc.memprof.stop()
+  -- Should stop successfully.
+  assert(res, err)
+end
+
+local TEST_SET = {
+  {
+    bytes = 2049,
+    match = '%dB',
+    hr = false,
+    name = 'non-human-readable mode is correct'
+  },
+  {
+    bytes = 100,
+    match = '%dB',
+    hr = true,
+    name = 'human-readable mode: bytes'
+  },
+  {
+    bytes = 2560,
+    match = '%d+%.%d%dKiB',
+    hr = true,
+    name = 'human-readable mode: float'
+  },
+  {
+    bytes = 2048,
+    match = '%dKiB',
+    hr = true,
+    name = 'human-readable mode: KiB'
+  },
+  {
+    bytes = 1024 * 1024,
+    match = '%dMiB',
+    hr = true,
+    name = 'human-readable mode: MiB'
+  },
+  -- XXX: The test case for GiB is not implemented because it is
+  -- OOM-prone for non-GC64 builds.
+}
+
+test:plan(#TEST_SET)
+
+for _, params in ipairs(TEST_SET) do
+  generate_output(params.bytes)
+  local cmd = PARSE_CMD .. (params.hr and ' --human-readable ' or '')
+  local output = io.popen(cmd .. TMP_BINFILE_MEMPROF):read('*all')
+  test:like(output, params.match, params.name)
+end
+
+os.remove(TMP_BINFILE_MEMPROF)
+test:done(true)
diff --git a/tools/memprof.lua b/tools/memprof.lua
index 955a1327bd..537cb869b4 100644
--- a/tools/memprof.lua
+++ b/tools/memprof.lua
@@ -22,6 +22,12 @@ local match, gmatch = string.match, string.gmatch
 -- Program options.
 local opt_map = {}
 
+-- Default config for the memprof parser.
+local config = {
+  leak_only = false,
+  human_readable = false,
+}
+
 function opt_map.help()
   stdout:write [[
 luajit-parse-memprof - parser of the memory usage profile collected
@@ -34,14 +40,18 @@ luajit-parse-memprof [options] memprof.bin
 Supported options are:
 
   --help                            Show this help and exit
+  --human-readable                  Use KiB/MiB/GiB notation instead of bytes
   --leak-only                       Report only leaks information
 ]]
   os.exit(0)
 end
 
-local leak_only = false
 opt_map["leak-only"] = function()
-  leak_only = true
+  config.leak_only = true
+end
+
+opt_map["human-readable"] = function()
+  config.human_readable = true
 end
 
 -- Print error and exit with error status.
@@ -101,11 +111,11 @@ local function dump(inputfile)
   local reader = bufread.new(inputfile)
   local symbols = symtab.parse(reader)
   local events = memprof.parse(reader, symbols)
-  if not leak_only then
-    view.profile_info(events)
+  if not config.leak_only then
+    view.profile_info(events, config)
   end
   local dheap = process.form_heap_delta(events)
-  view.leak_info(dheap)
+  view.leak_info(dheap, config)
   view.aliases(symbols)
   -- XXX: The second argument is required to properly close Lua
   -- universe (i.e. invoke <lua_close> before exiting).
diff --git a/tools/memprof/humanize.lua b/tools/memprof/humanize.lua
index 5b289ce30c..a0b1693a53 100644
--- a/tools/memprof/humanize.lua
+++ b/tools/memprof/humanize.lua
@@ -5,7 +5,29 @@
 
 local M = {}
 
-function M.render(events)
+local function human_readable_bytes(bytes)
+  local units = {"B", "KiB", "MiB", "GiB"}
+  local magnitude = 1
+
+  while bytes >= 1024 and magnitude < #units do
+    bytes = bytes / 1024
+    magnitude = magnitude + 1
+  end
+  local is_int = math.floor(bytes) == bytes
+  local fmt = is_int and "%d%s" or "%.2f%s"
+
+  return string.format(fmt, bytes, units[magnitude])
+end
+
+local function format_bytes(bytes, config)
+  if config.human_readable then
+    return human_readable_bytes(bytes)
+  else
+    return string.format('%dB', bytes)
+  end
+end
+
+function M.render(events, config)
   local ids = {}
 
   for id, _ in pairs(events) do
@@ -18,11 +40,11 @@ function M.render(events)
 
   for i = 1, #ids do
     local event = events[ids[i]]
-    print(string.format("%s: %d events\t+%d bytes\t-%d bytes",
+    print(string.format("%s: %d events\t+%s\t-%s",
       event.loc,
       event.num,
-      event.alloc,
-      event.free
+      format_bytes(event.alloc, config),
+      format_bytes(event.free, config)
     ))
 
     local prim_loc = {}
@@ -40,21 +62,21 @@ function M.render(events)
   end
 end
 
-function M.profile_info(events)
+function M.profile_info(events, config)
   print("ALLOCATIONS")
-  M.render(events.alloc)
+  M.render(events.alloc, config)
   print("")
 
   print("REALLOCATIONS")
-  M.render(events.realloc)
+  M.render(events.realloc, config)
   print("")
 
   print("DEALLOCATIONS")
-  M.render(events.free)
+  M.render(events.free, config)
   print("")
 end
 
-function M.leak_info(dheap)
+function M.leak_info(dheap, config)
   local leaks = {}
   for line, info in pairs(dheap) do
     -- Report "INTERNAL" events inconsistencies for profiling
@@ -71,8 +93,10 @@ function M.leak_info(dheap)
   print("HEAP SUMMARY:")
   for _, l in pairs(leaks) do
     print(string.format(
-      "%s holds %d bytes: %d allocs, %d frees",
-      l.line, l.dbytes, dheap[l.line].nalloc,
+      "%s holds %s: %d allocs, %d frees",
+      l.line,
+      format_bytes(l.dbytes, config),
+      dheap[l.line].nalloc,
       dheap[l.line].nfree
     ))
   end