diff --git a/crates/ruff_cli/src/commands/format.rs b/crates/ruff_cli/src/commands/format.rs
index 789b1511d5..e278f54edf 100644
--- a/crates/ruff_cli/src/commands/format.rs
+++ b/crates/ruff_cli/src/commands/format.rs
@@ -73,12 +73,14 @@ pub(crate) fn format(
                         return None;
                     };
 
-                    let preview = match pyproject_config.settings.lib.preview {
+                    let resolved_settings = resolver.resolve(path, &pyproject_config);
+
+                    let preview = match resolved_settings.preview {
                         PreviewMode::Enabled => ruff_python_formatter::PreviewMode::Enabled,
                         PreviewMode::Disabled => ruff_python_formatter::PreviewMode::Disabled,
                     };
+                    let line_length = resolved_settings.line_length;
 
-                    let line_length = resolver.resolve(path, &pyproject_config).line_length;
                     let options = PyFormatOptions::from_source_type(source_type)
                         .with_line_width(LineWidth::from(NonZeroU16::from(line_length)))
                         .with_preview(preview);
diff --git a/crates/ruff_cli/src/commands/format_stdin.rs b/crates/ruff_cli/src/commands/format_stdin.rs
index c430fa6937..0f3b7ab4ea 100644
--- a/crates/ruff_cli/src/commands/format_stdin.rs
+++ b/crates/ruff_cli/src/commands/format_stdin.rs
@@ -1,8 +1,11 @@
 use std::io::{stdout, Write};
+use std::num::NonZeroU16;
 use std::path::Path;
 
 use anyhow::Result;
 use log::warn;
+use ruff::settings::types::PreviewMode;
+use ruff_formatter::LineWidth;
 
 use ruff_python_formatter::{format_module, PyFormatOptions};
 use ruff_workspace::resolver::python_file_at_path;
@@ -35,9 +38,19 @@ pub(crate) fn format_stdin(cli: &FormatArguments, overrides: &Overrides) -> Resu
 
     // Format the file.
     let path = cli.stdin_filename.as_deref();
+
+    let preview = match pyproject_config.settings.lib.preview {
+        PreviewMode::Enabled => ruff_python_formatter::PreviewMode::Enabled,
+        PreviewMode::Disabled => ruff_python_formatter::PreviewMode::Disabled,
+    };
+    let line_length = pyproject_config.settings.lib.line_length;
+
     let options = path
         .map(PyFormatOptions::from_extension)
-        .unwrap_or_default();
+        .unwrap_or_default()
+        .with_line_width(LineWidth::from(NonZeroU16::from(line_length)))
+        .with_preview(preview);
+
     match format_source(path, options, mode) {
         Ok(result) => match mode {
             FormatMode::Write => Ok(ExitStatus::Success),