diff --git a/src/main/java/cokr/xit/base/file/xls/XLSWriter.java b/src/main/java/cokr/xit/base/file/xls/XLSWriter.java
index 558b336..5dec4be 100644
--- a/src/main/java/cokr/xit/base/file/xls/XLSWriter.java
+++ b/src/main/java/cokr/xit/base/file/xls/XLSWriter.java
@@ -5,9 +5,14 @@ import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Date;
+import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.function.Consumer;
 import java.util.function.Function;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.apache.poi.ss.usermodel.BorderStyle;
 import org.apache.poi.ss.usermodel.CellStyle;
@@ -438,7 +443,7 @@ public class XLSWriter extends XLS {
 	 * @return 숫자 스타일(오른쪽 정렬, 천단위 구분)
 	 */
 	public CellStyle n_nn0() {
-		return cellStyle(new Styler().alignment(HorizontalAlignment.RIGHT).dataFormat("#,###"));
+		return cellStyle(new Styler().alignment(HorizontalAlignment.RIGHT).dataFormat("#,##0"));
 	}
 
 	/**숫자 스타일(오른쪽 정렬, 천단위 구분, 소수점 2자리 표기)을 반환한다.
@@ -469,10 +474,23 @@ public class XLSWriter extends XLS {
 		return cellStyle(new Styler().dataFormat("HH:mm:ss").merge(Styler.CENTER));
 	}
 
+	public List<Object> header(Iterable<CellDef> defs, Supplier<Styler> factory) {
+		ArrayList<Object> result = new ArrayList<>();
+
+		for (CellDef def: defs) {
+			result.add(def.label);
+			Styler styler = factory.get();
+			styler.width(def.width);
+			result.add(styler);
+		}
+
+		return result;
+	}
+
 	/**셀스타일 정보. {@link #set(CellStyle) CellStyle을 설정}하는데 사용.
 	 * @author mjkhan
 	 */
-	public static class Styler {
+ 	public static class Styler {
 		/** 빈 스타일 */
 		public static final Styler NONE = new Styler().seal();
 		/** 좌측 정렬 */
@@ -791,4 +809,32 @@ public class XLSWriter extends XLS {
 			return this;
 		}
 	}
+
+	/**
+	 * @author mjkhan
+	 */
+	public static class CellDef {
+		public static final Map<String, CellDef> toMap(CellDef... defs) {
+			return Stream.of(defs).collect(Collectors.toMap(
+				def -> def.label,
+				def -> def,
+				(k1, k2) -> k1,
+				LinkedHashMap::new
+			));
+		}
+
+		private String label;
+		private int width;
+		private Object value;
+
+		public CellDef(String label, int width, Object value) {
+			this.label = label;
+			this.width = width;
+			this.value = value;
+		}
+
+		public Object getValue() {
+			return value;
+		}
+	}
 }
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