diff --git a/src/pages/menuPages/orders/index.vue b/src/pages/menuPages/orders/index.vue
index 7e5b77b..cbae0f9 100644
--- a/src/pages/menuPages/orders/index.vue
+++ b/src/pages/menuPages/orders/index.vue
@@ -201,13 +201,26 @@ function toOrderNumber(val: unknown): number | undefined {
   return Number.isFinite(n) ? n : undefined
 }
 
+const MESGHAL_FACTOR = 4.3318
+
+/** اگر قیمت واحد حدود مثقال باشد (گرم زنده × ضریب)، به قیمت هر گرم برگردان. */
+function gramUnitPrice(price: number): number {
+  const live = toOrderNumber(form.value.direction === 1 ? dataLast.value?.buy : dataLast.value?.sell)
+  if (!live || live <= 0 || !price) return price
+  const ratio = price / live
+  if (ratio >= MESGHAL_FACTOR * 0.92 && ratio <= MESGHAL_FACTOR * 1.08) {
+    return price / MESGHAL_FACTOR
+  }
+  return price
+}
+
 /** آخرین فیلدی که کاربر ویرایش کرده — برای همگام‌سازی هنگام تغییر قیمت هر گرم */
 const amountInputLock = ref<'rial' | 'gram' | null>(null)
 
 function calculateCash(val: unknown) {
   amountInputLock.value = 'gram'
   const grams = toOrderNumber(val)
-  const price = toOrderNumber(form.value.price)
+  const price = gramUnitPrice(toOrderNumber(form.value.price) ?? 0)
   if (grams === undefined) {
     form.value.goldCash = undefined
     amountInputLock.value = null
@@ -221,7 +234,7 @@ function calculateCash(val: unknown) {
 function calculateGold(val: unknown) {
   amountInputLock.value = 'rial'
   const rial = toOrderNumber(val)
-  const price = toOrderNumber(form.value.price)
+  const price = gramUnitPrice(toOrderNumber(form.value.price) ?? 0)
   if (rial === undefined) {
     form.value.goldValue = undefined
     amountInputLock.value = null
@@ -311,6 +324,7 @@ async function ok() {
     loading.value = true
     try {
       const payload: Order = { ...form.value }
+      payload.price = gramUnitPrice(toOrderNumber(form.value.price) ?? 0)
       payload.amount = toOrderNumber(form.value.goldValue)
 
       if (amountInputLock.value === 'rial' && form.value.goldCash != null) {