diff --git a/ui/app/helpers/utils/conversions.util.js b/ui/app/helpers/utils/conversions.util.js
index 5e1c21ff7..0cde0d0ac 100644
--- a/ui/app/helpers/utils/conversions.util.js
+++ b/ui/app/helpers/utils/conversions.util.js
@@ -129,3 +129,12 @@ export function hexWEIToDecGWEI (decGWEI) {
     toDenomination: 'GWEI',
   })
 }
+
+export function decETHToDecWEI (decEth) {
+  return conversionUtil(decEth, {
+    fromNumericBase: 'dec',
+    toNumericBase: 'dec',
+    fromDenomination: 'ETH',
+    toDenomination: 'WEI',
+  })
+}
diff --git a/ui/app/helpers/utils/conversions.util.test.js b/ui/app/helpers/utils/conversions.util.test.js
new file mode 100644
index 000000000..553fd1fd6
--- /dev/null
+++ b/ui/app/helpers/utils/conversions.util.test.js
@@ -0,0 +1,29 @@
+import * as utils from './conversions.util'
+import assert from 'assert'
+
+describe('decETHToDecWEI', function () {
+  it('should correctly convert 1 ETH to WEI', function () {
+    const weiValue = utils.decETHToDecWEI('1')
+    assert.equal(weiValue, '1000000000000000000')
+  })
+
+  it('should correctly convert 0.000000000000000001 ETH to WEI', function () {
+    const weiValue = utils.decETHToDecWEI('0.000000000000000001')
+    assert.equal(weiValue, '1')
+  })
+
+  it('should correctly convert 1000000.000000000000000001 ETH to WEI', function () {
+    const weiValue = utils.decETHToDecWEI('1000000.000000000000000001')
+    assert.equal(weiValue, '1000000000000000000000001')
+  })
+
+  it('should correctly convert 9876.543210 ETH to WEI', function () {
+    const weiValue = utils.decETHToDecWEI('9876.543210')
+    assert.equal(weiValue, '9876543210000000000000')
+  })
+
+  it('should correctly convert 1.0000000000000000 ETH to WEI', function () {
+    const weiValue = utils.decETHToDecWEI('1.0000000000000000')
+    assert.equal(weiValue, '1000000000000000000')
+  })
+})