diff --git a/src/commands/dataLength.ts b/src/commands/dataLength.ts
new file mode 100644
index 0000000..6e5bb5a
--- /dev/null
+++ b/src/commands/dataLength.ts
@@ -0,0 +1,113 @@
+import { Learn, Text } from '../lib/databases'
+import { ApplyOptions } from '@sapphire/decorators'
+import { Command } from '@sapphire/framework'
+import {
+  EmbedBuilder,
+  Message,
+  MessageFlags,
+  type ChatInputCommandInteraction,
+} from 'discord.js'
+
+@ApplyOptions<Command.Options>({
+  name: '데이터학습량',
+  aliases: ['학습데이터량', '데이터량', '학습량'],
+  description: '봇이 학습한 데ㅇ이터량을 보여줘요.',
+  detailedDescription: {
+    usage: '머핀아 학습데이터량',
+  },
+})
+export default class DataLengthCommand extends Command {
+  public registerApplicationCommands(registry: Command.Registry) {
+    registry.registerChatInputCommand(builder =>
+      builder.setName(this.name).setDescription(this.description),
+    )
+  }
+
+  public async messageRun(msg: Message<true>) {
+    return await this._run(msg)
+  }
+
+  public async chatInputRun(
+    interaction: ChatInputCommandInteraction<'cached'>,
+  ) {
+    return await this._run(interaction)
+  }
+
+  private async _run(
+    ctx: Message<true> | ChatInputCommandInteraction<'cached'>,
+  ) {
+    let userId: string
+    let username: string
+
+    if (ctx instanceof Message) {
+      userId = ctx.author.id
+      username = ctx.author.username
+    } else {
+      userId = ctx.user.id
+      username = ctx.user.username
+
+      await ctx.deferReply({
+        flags: [MessageFlags.Ephemeral],
+      })
+    }
+
+    const textLength = (await Text.find()).length
+    const muffinLength = (
+      await Text.find({
+        persona: 'muffin',
+      })
+    ).length
+    const nsfwLength = (
+      await Text.find({
+        persona: /^user/,
+      })
+    ).length
+
+    const learnLength = (await Learn.find()).length
+    const userLearnLength = (
+      await Learn.find({
+        user_id: userId,
+      })
+    ).length
+
+    const sum = textLength + learnLength
+
+    const embed = new EmbedBuilder()
+      .setTitle('저장된 데이터량')
+      .setDescription(`총합: \`${sum}\`개`)
+      .addFields(
+        {
+          name: '총 채팅 데이터량',
+          value: `\`${textLength}\`개`,
+          inline: true,
+        },
+        {
+          name: '총 지식 데이터량',
+          value: `\`${learnLength}\`개`,
+          inline: true,
+        },
+        {
+          name: '머핀 데이터량',
+          value: `\`${muffinLength}\`개`,
+        },
+        {
+          name: 'nsfw 데이터량',
+          value: `\`${nsfwLength}\`개`,
+          inline: true,
+        },
+        {
+          name: `${username}님이 가르쳐준 데이터량`,
+          value: `\`${userLearnLength}\`개`,
+          inline: true,
+        },
+      )
+
+    return ctx instanceof Message
+      ? await ctx.reply({
+          embeds: [embed],
+        })
+      : await ctx.editReply({
+          embeds: [embed],
+        })
+  }
+}