diff --git a/electrum/gui/qt/main_window.py b/electrum/gui/qt/main_window.py
index f626cc4a2..d4570e1a8 100644
--- a/electrum/gui/qt/main_window.py
+++ b/electrum/gui/qt/main_window.py
@@ -885,6 +885,10 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
             text += ' (%s)'%x
         return text
 
+    def format_fiat_and_units(self, amount):
+        # amount is in sats
+        return self.fx.format_amount_and_units(amount) if self.fx else ''
+
     def format_fee_rate(self, fee_rate):
         return self.config.format_fee_rate(fee_rate)
 
diff --git a/electrum/gui/qt/transaction_dialog.py b/electrum/gui/qt/transaction_dialog.py
index a15251a47..921758fa8 100644
--- a/electrum/gui/qt/transaction_dialog.py
+++ b/electrum/gui/qt/transaction_dialog.py
@@ -68,6 +68,9 @@ class TxSizeLabel(QLabel):
     def setAmount(self, byte_size):
         self.setText(('x   %s bytes   =' % byte_size) if byte_size else '')
 
+class TxFiatLabel(QLabel):
+    def setAmount(self, fiat_fee):
+        self.setText(('≈  %s' % fiat_fee) if fiat_fee else '')
 
 class QTextEditWithDefaultSize(QTextEdit):
     def sizeHint(self):
@@ -429,12 +432,15 @@ class BaseTxDialog(QDialog, MessageBoxMixin):
         desc = self.desc
         base_unit = self.main_window.base_unit()
         format_amount = self.main_window.format_amount
+        format_fiat_and_units = self.main_window.format_fiat_and_units
         tx_details = self.wallet.get_tx_info(self.tx)
         tx_mined_status = tx_details.tx_mined_status
         exp_n = tx_details.mempool_depth_bytes
         amount, fee = tx_details.amount, tx_details.fee
         size = self.tx.estimated_size()
         txid = self.tx.txid()
+        if txid is not None and self.main_window.fx.is_enabled():
+            tx_item_fiat = self.wallet.get_tx_item_fiat(txid, amount, self.main_window.fx, fee)
         lnworker_history = self.wallet.lnworker.get_onchain_history() if self.wallet.lnworker else {}
         if txid in lnworker_history:
             item = lnworker_history[txid]
@@ -493,14 +499,33 @@ class BaseTxDialog(QDialog, MessageBoxMixin):
             amount_str = ''
         elif amount > 0:
             amount_str = _("Amount received:") + ' %s'% format_amount(amount) + ' ' + base_unit
+            if self.main_window.fx.is_enabled():
+                if txid is not None:
+                    amount_str += ' (%s)'%  tx_item_fiat['fiat_value'].to_ui_string()
+                else:
+                    amount_str += ' (%s)'%  format_fiat_and_units(amount)
         else:
             amount_str = _("Amount sent:") + ' %s'% format_amount(-amount) + ' ' + base_unit
+            if self.main_window.fx.is_enabled():
+                if txid is not None:
+                    if amount == 0:
+                        amount_str += ' (%s)'%  tx_item_fiat['fiat_value'].to_ui_string()
+                    else:
+                        amount_str += ' (%s)'%  tx_item_fiat['fiat_value'].to_ui_string()[1:]
+                else:
+                    amount_str += ' (%s)'%  format_fiat_and_units(-amount)
         if amount_str:
             self.amount_label.setText(amount_str)
         else:
             self.amount_label.hide()
         size_str = _("Size:") + ' %d bytes'% size
-        fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit if fee is not None else _('unknown'))
+        if self.main_window.fx.is_enabled():
+            if txid is not None:
+                fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit + ' (' + tx_item_fiat['fiat_fee'].to_ui_string() + ')' if fee is not None else _("Unknown"))
+            else:
+                fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit + ' (' + format_fiat_and_units(fee) + ')' if fee is not None else _("Unknown"))
+        else:
+            fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit if fee is not None else _("Unknown"))
         if fee is not None:
             fee_rate = fee/size*1000
             fee_str += '  ( %s ) ' % self.main_window.format_fee_rate(fee_rate)
@@ -760,6 +785,11 @@ class PreviewTxDialog(BaseTxDialog, TxEditor):
         self.size_e.setAmount(0)
         self.size_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
 
+        self.size_f = TxFiatLabel()
+        self.size_f.setAlignment(Qt.AlignCenter)
+        self.size_f.setAmount(0)
+        self.size_f.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
+
         self.feerate_e = FeerateEdit(lambda: 0)
         self.feerate_e.setAmount(self.config.fee_per_byte())
         self.feerate_e.textEdited.connect(partial(self.on_fee_or_feerate, self.feerate_e, False))
@@ -800,6 +830,7 @@ class PreviewTxDialog(BaseTxDialog, TxEditor):
         grid.addWidget(self.size_e, 0, 2)
         grid.addWidget(self.fee_e, 0, 3)
         grid.addWidget(self.feerounding_icon, 0, 4)
+        grid.addWidget(self.size_f, 0, 5)
         grid.addWidget(self.fee_slider, 1, 1)
         grid.addWidget(self.fee_combo, 1, 2)
         hbox.addLayout(grid)
@@ -893,6 +924,8 @@ class PreviewTxDialog(BaseTxDialog, TxEditor):
         fee = tx.get_fee()
 
         self.size_e.setAmount(size)
+        fiat_fee = self.main_window.format_fiat_and_units(fee)
+        self.size_f.setAmount(fiat_fee)
 
         # Displayed fee/fee_rate values are set according to user input.
         # Due to rounding or dropping dust in CoinChooser,