diff --git a/README.md b/README.md
index 0618d56..f39e516 100644
--- a/README.md
+++ b/README.md
@@ -120,13 +120,18 @@ gdcli <email> upload <localPath> [options]
 Options:
 - `--name <n>` - Override filename
 - `--folder <folderId>` - Destination folder
+- `--convert <type>` - Convert to Google format: `docs`, `sheets`, or `slides`
 
 Examples:
 ```bash
 gdcli you@gmail.com upload ./report.pdf
 gdcli you@gmail.com upload ./report.pdf --folder 1ABC123 --name "Q4 Report.pdf"
+gdcli you@gmail.com upload ./README.md --convert docs
+gdcli you@gmail.com upload ./data.csv --convert sheets
 ```
 
+**Note:** The `--convert` option uses Google Drive's import feature. Some conversions (notably Markdown to Google Docs with full formatting) work best with Google Workspace accounts. Personal Gmail accounts may have limited conversion support.
+
 ### mkdir
 
 Create a folder.
diff --git a/src/cli.ts b/src/cli.ts
index d7923b6..b78293c 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -45,6 +45,7 @@ DRIVE COMMANDS
       Options:
         --name <n>           Override filename
         --folder <folderId>  Destination folder
+        --convert <type>     Convert to Google format: docs, sheets, or slides
 
   gdcli <email> mkdir <name> [--parent <folderId>]
       Create a folder.
@@ -84,6 +85,7 @@ EXAMPLES
   gdcli you@gmail.com download 1ABC123
   gdcli you@gmail.com download 1ABC123 ./myfile.pdf
   gdcli you@gmail.com upload ./report.pdf --folder 1ABC123
+  gdcli you@gmail.com upload ./README.md --convert docs
   gdcli you@gmail.com mkdir "New Folder" --parent 1ABC123
   gdcli you@gmail.com delete 1ABC123
   gdcli you@gmail.com move 1ABC123 1DEF456
@@ -341,12 +343,14 @@ async function handleUpload(account: string, args: string[]) {
 		options: {
 			name: { type: "string" },
 			folder: { type: "string" },
+			convert: { type: "string" },
 		},
 		allowPositionals: true,
 	});
 
 	const localPath = positionals[0];
-	if (!localPath) error("Usage: <email> upload <localPath> [--name <n>] [--folder <folderId>]");
+	if (!localPath)
+		error("Usage: <email> upload <localPath> [--name <n>] [--folder <folderId>] [--convert docs|sheets|slides]");
 
 	if (!fs.existsSync(localPath)) {
 		error(`File not found: ${localPath}`);
@@ -355,6 +359,7 @@ async function handleUpload(account: string, args: string[]) {
 	const file = await service.upload(account, localPath, {
 		name: values.name,
 		folderId: values.folder,
+		convertTo: values.convert,
 	});
 
 	console.log(`Uploaded: ${file.id}`);
diff --git a/src/drive-service.ts b/src/drive-service.ts
index ffef9d9..331481a 100644
--- a/src/drive-service.ts
+++ b/src/drive-service.ts
@@ -206,15 +206,23 @@ export class DriveService {
 	async upload(
 		email: string,
 		localPath: string,
-		options: { name?: string; folderId?: string; mimeType?: string } = {},
+		options: { name?: string; folderId?: string; mimeType?: string; convertTo?: string } = {},
 	): Promise<DriveFile> {
 		const drive = this.getDriveClient(email);
 
 		const fileName = options.name || path.basename(localPath);
 		const mimeType = options.mimeType || this.guessMimeType(localPath);
 
+		// Map convert option to Google Workspace mimeType
+		const targetMimeType = options.convertTo ? this.getConvertMimeType(options.convertTo) : undefined;
+
+		// Strip extension when converting, but preserve dotfiles (e.g., .env)
+		const { name: baseName, ext } = path.parse(fileName);
+		const uploadName = targetMimeType && ext ? baseName : fileName;
+
 		const fileMetadata: drive_v3.Schema$File = {
-			name: fileName,
+			name: uploadName,
+			mimeType: targetMimeType,
 			parents: options.folderId ? [options.folderId] : undefined,
 		};
 
@@ -223,13 +231,43 @@ export class DriveService {
 			body: fs.createReadStream(localPath),
 		};
 
-		const response = await drive.files.create({
-			requestBody: fileMetadata,
-			media,
-			fields: "id, name, mimeType, size, webViewLink",
-		});
+		try {
+			const response = await drive.files.create({
+				requestBody: fileMetadata,
+				media,
+				fields: "id, name, mimeType, size, webViewLink",
+			});
 
-		return response.data;
+			return response.data;
+		} catch (e) {
+			// Provide clearer error for conversion failures
+			if (options.convertTo && e instanceof Error) {
+				const status = (e as NodeJS.ErrnoException & { code?: number }).code;
+				if (status === 400 || status === 403) {
+					throw new Error(
+						`Conversion to ${options.convertTo} failed: ${e.message}. ` +
+							"Note: Some conversions (e.g., Markdown to Docs) require a Google Workspace account.",
+					);
+				}
+			}
+			throw e;
+		}
+	}
+
+	private getConvertMimeType(convertTo: string): string {
+		const mimeTypes: Record<string, string> = {
+			docs: "application/vnd.google-apps.document",
+			doc: "application/vnd.google-apps.document",
+			sheets: "application/vnd.google-apps.spreadsheet",
+			sheet: "application/vnd.google-apps.spreadsheet",
+			slides: "application/vnd.google-apps.presentation",
+			slide: "application/vnd.google-apps.presentation",
+		};
+		const result = mimeTypes[convertTo.toLowerCase()];
+		if (!result) {
+			throw new Error(`Unknown convert type: ${convertTo}. Use: docs, sheets, or slides`);
+		}
+		return result;
 	}
 
 	private guessMimeType(filePath: string): string {
@@ -254,6 +292,7 @@ export class DriveService {
 			".zip": "application/zip",
 			".csv": "text/csv",
 			".md": "text/markdown",
+			".mdx": "text/markdown",
 		};
 		return mimeTypes[ext] || "application/octet-stream";
 	}