diff --git a/src/components/common/input/CalcInput.jsx b/src/components/common/input/CalcInput.jsx
index 14118b87..d386bd7d 100644
--- a/src/components/common/input/CalcInput.jsx
+++ b/src/components/common/input/CalcInput.jsx
@@ -3,7 +3,7 @@ import { createCalculator } from '@/util/calc-utils'
 import '@/styles/calc.scss'
 
 export const CalculatorInput = forwardRef(
-  ({ value, onChange, label, options = {}, id, className = 'calculator-input', readOnly = false, placeholder, name='', disabled = false }, ref) => {
+  ({ value, onChange, label, options = {}, id, className = 'calculator-input', readOnly = false, placeholder, name='', disabled = false, maxLength = 6 }, ref) => {
     const [showKeypad, setShowKeypad] = useState(false)
     const [displayValue, setDisplayValue] = useState(value || '0')
     const [hasOperation, setHasOperation] = useState(false)
@@ -48,6 +48,14 @@ export const CalculatorInput = forwardRef(
       const calculator = calculatorRef.current
       let newDisplayValue = ''
 
+      // maxLength 체크
+      if (maxLength > 0) {
+        const currentLength = (calculator.currentOperand || '').length + (calculator.previousOperand || '').length + (calculator.operation || '').length
+        if (currentLength >= maxLength) {
+          return
+        }
+      }
+
       // 소수점 이하 2자리 제한 로직 추가
       const shouldPreventInput = (value) => {
         if (!value) return false
@@ -57,6 +65,10 @@ export const CalculatorInput = forwardRef(
 
       // 숫자 추가 함수
       const appendNumber = (current, num) => {
+        // maxLength 체크
+        if (maxLength > 0 && (current + num).length > maxLength) {
+          return current
+        }
         // 현재 값이 0이고 소수점이 없을 때 0이 아닌 숫자를 입력하면 대체
         if (current === '0' && num !== '.' && !current.includes('.')) {
           return num.toString()
@@ -407,6 +419,7 @@ export const CalculatorInput = forwardRef(
           placeholder={placeholder}
           autoComplete={'off'}
           disabled={disabled}
+          maxLength={maxLength}
         />
 
         {showKeypad && !readOnly && (