diff --git a/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemCreateRequest.java b/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemCreateRequest.java
index a828258d..6cd34636 100644
--- a/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemCreateRequest.java
+++ b/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemCreateRequest.java
@@ -29,12 +29,12 @@ public record ProblemCreateRequest(
 	Difficulty difficulty,
 
 	@NotNull(message = "메모리 제한을 설정해야 합니다.")
-	@Schema(description = "메모리 제한", example = "30000")
+	@Schema(description = "메모리 제한(KB)", example = "30000")
 	Long memoryLimit,
 
 	@NotNull(message = "시간 제한을 설정해야 합니다.")
-	@Schema(description = "시간 제한", example = "1000.0")
-	Double timeLimit,
+	@Schema(description = "시간 제한(ms)", example = "1000")
+	Long timeLimit,
 
 	@NotNull(message = "출처를 명시해야 합니다.")
 	@Schema(description = "출처", example = "ORIGINAL")
diff --git a/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemUpdateRequest.java b/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemUpdateRequest.java
index 804ce94b..f9ffebf9 100644
--- a/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemUpdateRequest.java
+++ b/src/main/java/org/ezcode/codetest/application/problem/dto/request/ProblemUpdateRequest.java
@@ -22,11 +22,11 @@ public record ProblemUpdateRequest(
 	@Schema(description = "난이도", example = "BRONZE")
 	Difficulty difficulty,
 
-	@Schema(description = "메모리 제한", example = "30000")
+	@Schema(description = "메모리 제한(KB)", example = "30000")
 	Long memoryLimit,
 
-	@Schema(description = "시간 제한", example = "1000.0")
-	Double timeLimit,
+	@Schema(description = "시간 제한(ms)", example = "1000")
+	Long timeLimit,
 
 	@Schema(description = "출처", example = "ORIGINAL")
 	Reference reference
diff --git a/src/main/java/org/ezcode/codetest/application/problem/dto/response/ProblemDetailResponse.java b/src/main/java/org/ezcode/codetest/application/problem/dto/response/ProblemDetailResponse.java
index 4adb0b71..eb154f22 100644
--- a/src/main/java/org/ezcode/codetest/application/problem/dto/response/ProblemDetailResponse.java
+++ b/src/main/java/org/ezcode/codetest/application/problem/dto/response/ProblemDetailResponse.java
@@ -33,11 +33,11 @@ public record ProblemDetailResponse(
 	@Schema(description = "난이도", example = "BRONZE")
 	String difficulty,
 
-	@Schema(description = "메모리 제한", example = "30000")
+	@Schema(description = "메모리 제한(KB)", example = "30000")
 	Long memoryLimit,
 
-	@Schema(description = "시간 제한", example = "1000.0")
-	Double timeLimit,
+	@Schema(description = "시간 제한(ms)", example = "1000")
+	Long timeLimit,
 
 	@Schema(description = "출처", example = "ORIGINAL")
 	Reference reference,
diff --git a/src/main/java/org/ezcode/codetest/domain/problem/model/entity/Problem.java b/src/main/java/org/ezcode/codetest/domain/problem/model/entity/Problem.java
index 35b7d1fc..b87c04f6 100644
--- a/src/main/java/org/ezcode/codetest/domain/problem/model/entity/Problem.java
+++ b/src/main/java/org/ezcode/codetest/domain/problem/model/entity/Problem.java
@@ -58,7 +58,7 @@ public class Problem extends BaseEntity {
 	private Long memoryLimit;
 
 	@Column(nullable = false)
-	private Double timeLimit;
+	private Long timeLimit;
 
 	@Enumerated(EnumType.STRING)
 	@Column(nullable = false)
@@ -72,7 +72,7 @@ public class Problem extends BaseEntity {
 
 	@Builder
 	public Problem(User creator, Category category, String title, String description, int score, String difficulty,
-		Long memoryLimit, Double timeLimit, Reference reference) {
+		Long memoryLimit, Long timeLimit, Reference reference) {
 		this.creator = creator;
 		this.category = category;
 		this.title = title;
@@ -87,7 +87,7 @@ public Problem(User creator, Category category, String title, String description
 
 	// 여러개를 하나의 객체로 만드는 것
 	public static Problem of(User creator, Category category, String title, String description, int score, String difficulty,
-		Long memoryLimit, Double timeLimit, Reference reference) {
+		Long memoryLimit, Long timeLimit, Reference reference) {
 
 		return Problem.builder()
 			.creator(creator)
@@ -104,7 +104,7 @@ public static Problem of(User creator, Category category, String title, String d
 
 	// 문제 수정 로직
 	public void update(User creator, Category category, String title, String description, Difficulty difficulty,
-		Long memoryLimit, Double timeLimit, Reference reference) {
+		Long memoryLimit, Long timeLimit, Reference reference) {
 
 		if (creator != null) this.creator = creator;
 		if (category != null) this.category = category;
diff --git a/src/main/java/org/ezcode/codetest/domain/problem/model/enums/Difficulty.java b/src/main/java/org/ezcode/codetest/domain/problem/model/enums/Difficulty.java
index 3e778eee..8b7e9872 100644
--- a/src/main/java/org/ezcode/codetest/domain/problem/model/enums/Difficulty.java
+++ b/src/main/java/org/ezcode/codetest/domain/problem/model/enums/Difficulty.java
@@ -9,11 +9,13 @@
 
 @Getter
 public enum Difficulty {
-	BRONZE("브론즈", 20),
-	SILVER("실버", 40),
-	GOLD("골드", 60),
-	PLATINUM("플래티넘", 80),
-	DIAMOND("다이아", 100);
+	LV1("1", 10),
+	LV2("2", 20),
+	LV3("3", 40),
+	LV4("4", 80),
+	LV5("5", 160),
+	LV6("6", 320),
+	LV7("7", 640);
 
 	private final String difficulty;