<?xml version="1.0" encoding="utf-8"?>
<InstanceReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.0.0.10</Version>
  <hasSegments>true</hasSegments>
  <ReportName>United States Dollar Convenience Translations (Accumulated Other Comprehensive Income)</ReportName>
  <ReportLongName>110 - Disclosure - United States Dollar Convenience Translations</ReportLongName>
  <DisplayLabelColumn>true</DisplayLabelColumn>
  <ShowElementNames>false</ShowElementNames>
  <RoundingOption />
  <HasEmbeddedReports>false</HasEmbeddedReports>
  <Columns>
    <Column>
      <LabelColumn>false</LabelColumn>
      <Id>1</Id>
      <Labels>
        <Label Id="1" Label="12 Months Ended" />
        <Label Id="2" Label="Dec. 31, 2009" />
        <Label Id="3" Label="KRW (₩)" />
      </Labels>
      <CurrencyCode>KRW</CurrencyCode>
      <CurrencySymbol>₩</CurrencySymbol>
      <FootnoteIndexer />
      <hasSegments>true</hasSegments>
      <hasScenarios>false</hasScenarios>
      <Segments>
        <Segment>
          <IsDefaultForEntity>false</IsDefaultForEntity>
          <Name />
          <IsFromEntityGroup>false</IsFromEntityGroup>
          <ValueName>Accumulated Other Comprehensive Income</ValueName>
          <ValueType>us-gaap_StatementEquityComponentsAxis</ValueType>
          <Namespace>xbrldi</Namespace>
          <Schema>http://xbrl.org/2006/xbrldi</Schema>
          <DimensionInfo>
            <Id>us-gaap_AccumulatedOtherComprehensiveIncomeMember</Id>
            <dimensionId>us-gaap_StatementEquityComponentsAxis</dimensionId>
            <type>explicitMember</type>
          </DimensionInfo>
        </Segment>
      </Segments>
      <Scenarios />
      <Units>
        <Unit>
          <UnitID>iso4217_KRW</UnitID>
          <UnitType>Standard</UnitType>
          <StandardMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
            <MeasureValue>KRW</MeasureValue>
            <MeasureNamespace>iso4217</MeasureNamespace>
          </StandardMeasure>
          <Scale>0</Scale>
        </Unit>
      </Units>
    </Column>
  </Columns>
  <Rows>
    <Row>
      <Id>2</Id>
      <Label>United States Dollar Convenience Translations</Label>
      <Level>2</Level>
      <ElementName>us-gaap_ForeignCurrencyDisclosureTextBlock</ElementName>
      <ElementPrefix>us-gaap</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ElementDataType>string</ElementDataType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole />
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText>&lt;div&gt;
&lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt;

&lt;tr&gt;
&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;3.&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;United States Dollar
Convenience Translations&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
&lt;p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px; MARGIN-LEFT: 4%"&gt;
&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Controlling
Company operates primarily in Korea and its financial accounting
records are maintained in Korean Won. The US dollar amounts are
provided herein as supplemental information solely for the
convenience of the reader. Korean Won amounts are expressed in US
dollars at the rate of (Won)1,163.65 : US $1, the US Federal
Reserve Bank of New York noon buying exchange rate in effect on
December&amp;#xA0;31, 2009. The US dollar amounts are unaudited and are
not presented in accordance with generally accepted accounting
principles in the United States of America. These translations
should not be construed as a representation that the Korean Won
amounts shown could be converted, realized or settled in US dollars
at this or any other rate.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 18px"&gt;
&amp;#xA0;&lt;/p&gt;
&lt;/div&gt;</NonNumbericText>
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDefenition>Disclosure of foreign currency transactions and translation. This may include description of foreign currency transactions, foreign currency gains and losses, explanation of change in cumulative translation adjustment, description of effect of subsequent foreign currency exchange rate change, cumulative translation adjustment movement, foreign currency translation adjustment by component movement, translation adjustment for net investment hedge movement, adjustment for long-term intercompany transactions, schedule of long-term intercompany balances and any other foreign currency transactions and translation related items.</ElementDefenition>
      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 52
 -Paragraph 30, 31, 32

</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
  </Rows>
  <Footnotes />
  <ComparabilityReport>false</ComparabilityReport>
  <NumberOfCols>1</NumberOfCols>
  <NumberOfRows>1</NumberOfRows>
  <HasScenarios>false</HasScenarios>
  <MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel>
  <SharesRoundingLevel>UnKnown</SharesRoundingLevel>
  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
</InstanceReport>
