diff --git a/Million Prototype/Form1.Designer.cs b/Million Prototype/Form1.Designer.cs
index aab7c5b..e178a68 100644
--- a/Million Prototype/Form1.Designer.cs	
+++ b/Million Prototype/Form1.Designer.cs	
@@ -34,6 +34,9 @@
             this.button2 = new System.Windows.Forms.Button();
             this.button3 = new System.Windows.Forms.Button();
             this.button4 = new System.Windows.Forms.Button();
+            this.textBoxAskInput = new System.Windows.Forms.TextBox();
+            this.textBoxAskOutput = new System.Windows.Forms.TextBox();
+            this.button5 = new System.Windows.Forms.Button();
             this.SuspendLayout();
             // 
             // label1
@@ -78,7 +81,7 @@
             // 
             // button3
             // 
-            this.button3.Location = new System.Drawing.Point(47, 203);
+            this.button3.Location = new System.Drawing.Point(47, 128);
             this.button3.Name = "button3";
             this.button3.Size = new System.Drawing.Size(75, 23);
             this.button3.TabIndex = 4;
@@ -88,7 +91,7 @@
             // 
             // button4
             // 
-            this.button4.Location = new System.Drawing.Point(47, 299);
+            this.button4.Location = new System.Drawing.Point(47, 157);
             this.button4.Name = "button4";
             this.button4.Size = new System.Drawing.Size(75, 23);
             this.button4.TabIndex = 5;
@@ -96,11 +99,38 @@
             this.button4.UseVisualStyleBackColor = true;
             this.button4.Click += new System.EventHandler(this.button4_Click);
             // 
+            // textBoxAskInput
+            // 
+            this.textBoxAskInput.Location = new System.Drawing.Point(608, 18);
+            this.textBoxAskInput.Name = "textBoxAskInput";
+            this.textBoxAskInput.Size = new System.Drawing.Size(100, 21);
+            this.textBoxAskInput.TabIndex = 6;
+            // 
+            // textBoxAskOutput
+            // 
+            this.textBoxAskOutput.Location = new System.Drawing.Point(714, 18);
+            this.textBoxAskOutput.Name = "textBoxAskOutput";
+            this.textBoxAskOutput.Size = new System.Drawing.Size(100, 21);
+            this.textBoxAskOutput.TabIndex = 7;
+            // 
+            // button5
+            // 
+            this.button5.Location = new System.Drawing.Point(608, 45);
+            this.button5.Name = "button5";
+            this.button5.Size = new System.Drawing.Size(75, 23);
+            this.button5.TabIndex = 8;
+            this.button5.Text = "호가값";
+            this.button5.UseVisualStyleBackColor = true;
+            this.button5.Click += new System.EventHandler(this.button5_Click);
+            // 
             // Form1
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(1415, 703);
+            this.Controls.Add(this.button5);
+            this.Controls.Add(this.textBoxAskOutput);
+            this.Controls.Add(this.textBoxAskInput);
             this.Controls.Add(this.button4);
             this.Controls.Add(this.button3);
             this.Controls.Add(this.button2);
@@ -122,6 +152,9 @@
         private System.Windows.Forms.Button button2;
         private System.Windows.Forms.Button button3;
         private System.Windows.Forms.Button button4;
+        private System.Windows.Forms.TextBox textBoxAskInput;
+        private System.Windows.Forms.TextBox textBoxAskOutput;
+        private System.Windows.Forms.Button button5;
     }
 }
 
diff --git a/Million Prototype/Form1.cs b/Million Prototype/Form1.cs
index 8a6d940..3988cda 100644
--- a/Million Prototype/Form1.cs	
+++ b/Million Prototype/Form1.cs	
@@ -421,5 +421,20 @@ namespace Million_Prototype
             }
             resultList.ToString();
         }
+
+        private void button5_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                var ask_price = double.Parse(textBoxAskInput.Text);
+
+                textBoxAskOutput.Text = OrderbookManager.GetAskPrice(ask_price).ToString();
+            }
+            catch(Exception ex)
+            {
+                ex.ToString();
+            }
+
+        }
     }
 }
diff --git a/Million/Manager/OrderbookManager.cs b/Million/Manager/OrderbookManager.cs
new file mode 100644
index 0000000..6045eeb
--- /dev/null
+++ b/Million/Manager/OrderbookManager.cs
@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Million.Manager
+{
+    public class OrderbookManager
+    {
+        /// <summary>
+        /// 해당 값의 호가 정보 반환
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="upDown">true면 업, false면 다운</param>
+        /// <returns></returns>
+        public static double GetAskPrice(double value, bool upDown = true)
+        {
+            double priceUnit = 0;
+
+            switch(value)
+            {
+                case double n when(0<= n && n< 0.1):
+                    priceUnit = 0.0001; 
+                    value = Math.Truncate(value * 10000) / 10000;
+                    break;
+                case double n when (0.1 <= n && n < 1):
+                    priceUnit = 0.001;
+                    value = Math.Truncate(value * 1000) / 1000;
+                    break;
+                case double n when (1 <= n && n <10):
+                    priceUnit = 0.01;
+                    value = Math.Truncate(value * 100) / 100;
+                    break;
+                case double n when (10 <= n && n < 100):
+                    priceUnit = 0.1;
+                    value = Math.Truncate(value * 10) / 10;
+                    break;
+                case double n when (100 <= n && n < 1000):
+                    priceUnit = 1;
+                    value = Math.Truncate(value);
+                    break;
+                case double n when (1000 <= n && n < 10000):
+                    priceUnit = 5;
+                    value = ((int)value / 5) * 5;
+                    break;
+                case double n when (10000 <= n && n < 100000):
+                    priceUnit = 10;
+                    value = ((int)value / 10) * 10;
+                    break;
+                case double n when (100000 <= n && n < 500000):
+                    priceUnit = 50;
+                    value = ((int)value / 50) * 50;
+                    break;
+                case double n when (500000 <= n && n < 1000000):
+                    priceUnit = 100;
+                    value = ((int)value / 100) * 100;
+                    break;
+                case double n when (1000000 <= n && n < 2000000):
+                    priceUnit = 500;
+                    value = ((int)value / 500) * 500;
+                    break;
+                case double n when (2000000 <= n ):
+                    priceUnit = 1000;
+                    value = ((int)value / 1000) * 1000;
+                    break;
+
+            }
+
+            if (upDown)
+            {
+                value += priceUnit;
+            }
+
+            return value;
+        }
+    }
+}
diff --git a/Million/Million Core.csproj b/Million/Million Core.csproj
index e00aafd..de81bb6 100644
--- a/Million/Million Core.csproj	
+++ b/Million/Million Core.csproj	
@@ -135,6 +135,7 @@
     </Compile>
     <Compile Include="Manager\BuyLogicManager.cs" />
     <Compile Include="Manager\DataSettingManager.cs" />
+    <Compile Include="Manager\OrderbookManager.cs" />
     <Compile Include="Manager\ResultLogicManager.cs" />
     <Compile Include="Manager\SellLogicManager.cs" />
     <Compile Include="Manager\ValidationCheckManager.cs" />