diff --git a/CHANGELOG.md b/CHANGELOG.md
index 771d31dea..77e681d25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -95,6 +95,10 @@
 
 ### Misc
 
+- Moved the `convert` command under the `file` sub-command, to be used as `deck file convert ...`. The 
+  top level command `deck convert ...` is marked as deprecated and will be removed in a future version. 
+  [#939](https://github.com/Kong/deck/pull/939)
+
 
 ## [v1.23.0]
 
diff --git a/cmd/convert.go b/cmd/convert.go
index 0476ab2e2..3b25f42fb 100644
--- a/cmd/convert.go
+++ b/cmd/convert.go
@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"fmt"
+	"log"
 	"os"
 
 	"github.com/kong/deck/convert"
@@ -18,61 +19,73 @@ var (
 	convertCmdAssumeYes         bool
 )
 
+func executeConvert(_ *cobra.Command, _ []string) error {
+	sourceFormat, err := convert.ParseFormat(convertCmdSourceFormat)
+	if err != nil {
+		return err
+	}
+	destinationFormat, err := convert.ParseFormat(convertCmdDestinationFormat)
+	if err != nil {
+		return err
+	}
+
+	if convertCmdInputFile != "" {
+		if yes, err := utils.ConfirmFileOverwrite(
+			convertCmdOutputFile, "", convertCmdAssumeYes,
+		); err != nil {
+			return err
+		} else if !yes {
+			return nil
+		}
+
+		err = convert.Convert(convertCmdInputFile, convertCmdOutputFile, sourceFormat, destinationFormat)
+		if err != nil {
+			return fmt.Errorf("converting file: %w", err)
+		}
+	} else if is2xTo3xConversion() {
+		path, err := os.Getwd()
+		if err != nil {
+			return fmt.Errorf("getting current working directory: %w", err)
+		}
+		files, err := utils.ConfigFilesInDir(path)
+		if err != nil {
+			return fmt.Errorf("getting files from directory: %w", err)
+		}
+		for _, filename := range files {
+			err = convert.Convert(filename, filename, sourceFormat, destinationFormat)
+			if err != nil {
+				return fmt.Errorf("converting '%s' file: %w", filename, err)
+			}
+		}
+	}
+	if convertCmdDestinationFormat == "konnect" {
+		cprint.UpdatePrintf("Warning: konnect format type was deprecated in v1.12 and it will be removed\n" +
+			"in a future version. Please use your Kong configuration files with deck <cmd>.\n" +
+			"Please see https://docs.konghq.com/konnect/getting-started/import/.\n")
+	}
+	return nil
+}
+
 // newConvertCmd represents the convert command
-func newConvertCmd() *cobra.Command {
+func newConvertCmd(deprecated bool) *cobra.Command {
+	short := "Convert files from one format into another format"
+	execute := executeConvert
+	if deprecated {
+		short = "[deprecated] use 'file convert' instead"
+		execute = func(cmd *cobra.Command, args []string) error {
+			log.Println("Warning: the 'deck convert' command was deprecated and moved to 'deck file convert'")
+			return executeConvert(cmd, args)
+		}
+	}
+
 	convertCmd := &cobra.Command{
 		Use:   "convert",
-		Short: "Convert files from one format into another format",
+		Short: short,
 		Long: `The convert command changes configuration files from one format
 into another compatible format. For example, a configuration for 'kong-gateway-2.x'
 can be converted into a 'kong-gateway-3.x' configuration file.`,
 		Args: validateNoArgs,
-		RunE: func(cmd *cobra.Command, args []string) error {
-			sourceFormat, err := convert.ParseFormat(convertCmdSourceFormat)
-			if err != nil {
-				return err
-			}
-			destinationFormat, err := convert.ParseFormat(convertCmdDestinationFormat)
-			if err != nil {
-				return err
-			}
-
-			if convertCmdInputFile != "" {
-				if yes, err := utils.ConfirmFileOverwrite(
-					convertCmdOutputFile, "", convertCmdAssumeYes,
-				); err != nil {
-					return err
-				} else if !yes {
-					return nil
-				}
-
-				err = convert.Convert(convertCmdInputFile, convertCmdOutputFile, sourceFormat, destinationFormat)
-				if err != nil {
-					return fmt.Errorf("converting file: %w", err)
-				}
-			} else if is2xTo3xConversion() {
-				path, err := os.Getwd()
-				if err != nil {
-					return fmt.Errorf("getting current working directory: %w", err)
-				}
-				files, err := utils.ConfigFilesInDir(path)
-				if err != nil {
-					return fmt.Errorf("getting files from directory: %w", err)
-				}
-				for _, filename := range files {
-					err = convert.Convert(filename, filename, sourceFormat, destinationFormat)
-					if err != nil {
-						return fmt.Errorf("converting '%s' file: %w", filename, err)
-					}
-				}
-			}
-			if convertCmdDestinationFormat == "konnect" {
-				cprint.UpdatePrintf("Warning: konnect format type was deprecated in v1.12 and it will be removed\n" +
-					"in a future version. Please use your Kong configuration files with deck <cmd>.\n" +
-					"Please see https://docs.konghq.com/konnect/getting-started/import/.\n")
-			}
-			return nil
-		},
+		RunE: execute,
 	}
 
 	sourceFormats := []convert.Format{convert.FormatKongGateway, convert.FormatKongGateway2x}
diff --git a/cmd/root.go b/cmd/root.go
index 2e19fd2da..e1810e628 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -211,12 +211,11 @@ It can be used to export, import, or sync entities to Kong.`,
 	rootCmd.AddCommand(newPingCmd())
 	rootCmd.AddCommand(newDumpCmd())
 	rootCmd.AddCommand(newDiffCmd())
-	rootCmd.AddCommand(newConvertCmd())
+	rootCmd.AddCommand(newConvertCmd(true)) // deprecated, to exist under the `file` subcommand only
 	rootCmd.AddCommand(newCompletionCmd())
 	rootCmd.AddCommand(newKonnectCmd())
-	// commands from go-apiops library:
-	fileCmd := newAddFileCmd()
 	{
+		fileCmd := newAddFileCmd()
 		rootCmd.AddCommand(fileCmd)
 		fileCmd.AddCommand(newAddPluginsCmd())
 		fileCmd.AddCommand(newAddTagsCmd())
@@ -225,6 +224,8 @@ It can be used to export, import, or sync entities to Kong.`,
 		fileCmd.AddCommand(newMergeCmd())
 		fileCmd.AddCommand(newPatchCmd())
 		fileCmd.AddCommand(newOpenapi2KongCmd())
+		fileCmd.AddCommand(newConvertCmd(false))
+		fileCmd.AddCommand(newValidateCmd()) // alias; since this does both file+online
 	}
 	return rootCmd
 }