diff --git a/core/src/main/java/dev/felnull/itts/core/discord/command/InfoCommand.java b/core/src/main/java/dev/felnull/itts/core/discord/command/InfoCommand.java
index ece4a37..ff381ff 100644
--- a/core/src/main/java/dev/felnull/itts/core/discord/command/InfoCommand.java
+++ b/core/src/main/java/dev/felnull/itts/core/discord/command/InfoCommand.java
@@ -1,6 +1,6 @@
 package dev.felnull.itts.core.discord.command;
 
-import dev.felnull.fnjl.util.FNStringUtil;
+import dev.felnull.itts.core.tts.TTSManager;
 import net.dv8tion.jda.api.EmbedBuilder;
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
 import net.dv8tion.jda.api.interactions.commands.build.Commands;
@@ -24,6 +24,11 @@ public class InfoCommand extends BaseCommand {
      */
     private static final String SOURCE_URL = "https://github.com/TeamFelnull/I-TTS";
 
+    /**
+     * 時間を相対的に表示するフォーマット
+     */
+    private static final String RELATIVE_TIME_FORMAT = "<t:%d:R>";
+
     /**
      * コンストラクタ
      */
@@ -80,14 +85,17 @@ private void oss(SlashCommandInteractionEvent e) {
     }
 
     private void work(SlashCommandInteractionEvent e) {
+        TTSManager ttsManager = getTTSManager();
+
         EmbedBuilder workEmbedBuilder = new EmbedBuilder();
         workEmbedBuilder.setColor(getConfigManager().getConfig().getThemeColor());
 
         workEmbedBuilder.setTitle("稼働情報");
 
-        workEmbedBuilder.addField("稼働時間", FNStringUtil.getTimeFormat(System.currentTimeMillis() - getITTSRuntime().getStartupTime()), false);
+        workEmbedBuilder.addField("稼働開始時間", String.format(RELATIVE_TIME_FORMAT, getITTSRuntime().getStartupTime() / 1000), false);
         workEmbedBuilder.addField("参加サーバー数", e.getJDA().getGuilds().size() + "個", false);
-        workEmbedBuilder.addField("読み上げサーバー数", getTTSManager().getTTSCount() + "個", false);
+        workEmbedBuilder.addField("読み上げサーバー数", ttsManager.getTTSCount() + "個", false);
+        workEmbedBuilder.addField("利用者数", ttsManager.getUserCount() + "人", false);
 
         e.replyEmbeds(workEmbedBuilder.build()).setEphemeral(true).queue();
     }
diff --git a/core/src/main/java/dev/felnull/itts/core/tts/TTSManager.java b/core/src/main/java/dev/felnull/itts/core/tts/TTSManager.java
index df3e7b4..e9ffe2d 100644
--- a/core/src/main/java/dev/felnull/itts/core/tts/TTSManager.java
+++ b/core/src/main/java/dev/felnull/itts/core/tts/TTSManager.java
@@ -40,6 +40,36 @@ public int getTTSCount() {
         return instances.size();
     }
 
+    /**
+     * 利用者数を取得
+     *
+     * @return 利用者数
+     */
+    public int getUserCount() {
+        List<Guild> guilds = getBot().getJDA().getGuilds();
+
+        List<Long> ttsChannels = instances.values().stream()
+                .map(TTSInstance::getAudioChannel)
+                .toList();
+
+        long users = guilds.stream()
+                .flatMap(guild -> guild.getVoiceStates().stream())
+                .filter(voiceState -> voiceState.getChannel() != null)
+                .filter(voiceState -> {
+                    AudioChannelUnion channelUnion = voiceState.getChannel();
+                    if (channelUnion != null) {
+                        return ttsChannels.contains(channelUnion.getIdLong());
+                    }
+                    return false;
+                })
+                .filter(TTSUtils::canListen)
+                // .map(GuildVoiceState::getMember)
+                // .distinct()
+                .count();
+
+        return (int) users;
+    }
+
     /**
      * 読み上げチャンネルを変更
      *