diff --git a/test/unit/util_test.js b/test/unit/util_test.js
index 91c7c83e9..9a3963ac1 100644
--- a/test/unit/util_test.js
+++ b/test/unit/util_test.js
@@ -122,25 +122,6 @@ describe('util', function() {
 
   })
 
-  describe('#ethToWei', function() {
-
-    it('should take an eth BN, returns wei BN', function() {
-      var input = new ethUtil.BN(1, 10)
-      var result = util.ethToWei(input)
-      assert.equal(result, ethInWei, '18 zeroes')
-    })
-
-  })
-
-  describe('#weiToEth', function() {
-
-    it('should take a wei BN and return an eth BN', function() {
-    var result = util.weiToEth(new ethUtil.BN(ethInWei))
-    assert.equal(result, '1', 'equals 1 eth')
-    })
-
-  })
-
   describe('#formatBalance', function() {
 
     it('when given nothing', function() {
diff --git a/ui/app/util.js b/ui/app/util.js
index b86bc6035..216ded49f 100644
--- a/ui/app/util.js
+++ b/ui/app/util.js
@@ -30,8 +30,6 @@ module.exports = {
   generateBalanceObject: generateBalanceObject,
   dataSize: dataSize,
   readableDate: readableDate,
-  ethToWei: ethToWei,
-  weiToEth: weiToEth,
   normalizeToWei: normalizeToWei,
   normalizeEthStringToWei: normalizeEthStringToWei,
   normalizeNumberToWei: normalizeNumberToWei,
@@ -79,27 +77,15 @@ function numericBalance (balance) {
   return new ethUtil.BN(stripped, 16)
 }
 
-// Takes eth BN, returns BN wei
-function ethToWei (bn) {
-  var eth = new ethUtil.BN('1000000000000000000')
-  var wei = bn.mul(eth)
-  return wei
-}
-
-// Takes BN in Wei, returns BN in eth
-function weiToEth (bn) {
-  var diff = new ethUtil.BN('1000000000000000000')
-  var eth = bn.div(diff)
-  return eth
-}
-
 // Takes  hex, returns [beforeDecimal, afterDecimal]
 function parseBalance (balance) {
   var beforeDecimal, afterDecimal
-  const wei = numericBalance(balance).toString()
+  const wei = numericBalance(balance)
+  var weiString = wei.toString()
   const trailingZeros = /0+$/
 
-  beforeDecimal = wei.length > 18 ? wei.slice(0, wei.length - 18) : '0'
+  beforeDecimal = weiString.length > 18 ? weiString.slice(0, weiString.length - 18) : '0'
+  // We don't use weiToEth here because we need to maintain decimal precision.
   afterDecimal = ('000000000000000000' + wei).slice(-18).replace(trailingZeros, '')
   if (afterDecimal === '') { afterDecimal = '0' }
   return [beforeDecimal, afterDecimal]