diff --git a/upbit/__init__.py b/upbit/__init__.py
index d3fcc92..00beedd 100644
--- a/upbit/__init__.py
+++ b/upbit/__init__.py
@@ -7,7 +7,7 @@
 __all__ = ['client']
 __module_name__ = 'upbit-client'
 
-__version__ = '1.1.6.15'
+__version__ = '1.1.6.16'
 __released_version__ = pkg_version.get_versions(__module_name__)
 __latest_version__ = __released_version__[0]
 
diff --git a/upbit/pkg_version.py b/upbit/pkg_version.py
index 918bdab..9fcb83b 100644
--- a/upbit/pkg_version.py
+++ b/upbit/pkg_version.py
@@ -9,4 +9,4 @@ def get_versions(package_name):
     resp = requests.get(url)
     data = resp.json()
     versions = data["releases"].keys()
-    return sorted(versions, key=LooseVersion, reverse=True)
\ No newline at end of file
+    return sorted(versions, key=LooseVersion, reverse=True)
diff --git a/upbit/utils.py b/upbit/utils.py
new file mode 100644
index 0000000..4980857
--- /dev/null
+++ b/upbit/utils.py
@@ -0,0 +1,43 @@
+
+from typing import Union
+
+
+def validate_price(price: Union[int, float, str]) -> float:
+    """
+    Documents: https://docs.upbit.com/docs/market-info-trade-price-detail
+
+    [Order price units]
+    ~10         : 0.01
+    ~100        : 0.1
+    ~1,000      : 1
+    ~10,000     : 5
+    ~100,000    : 10
+    ~500,000    : 50
+    ~1,000,000  : 100
+    ~2,000,000  : 500
+    +2,000,000  : 1,000
+    """
+
+    price = float(price)
+    unit = 0.01
+    if price <= 10:
+        unit = 0.01
+    elif price <= 100:
+        unit = 0.1
+    elif price <= 1_000:
+        unit = 1
+    elif price <= 10_000:
+        unit = 5
+    elif price <= 100_000:
+        unit = 10
+    elif price <= 500_000:
+        unit = 50
+    elif price <= 1_000_000:
+        unit = 100
+    elif price <= 2_000_000:
+        unit = 500
+    elif price > 2_000_000:
+        unit = 1000
+    else:
+        raise ValueError('Invaild Price')
+    return price - (price % unit)