diff --git a/src/app/tabs/runTab/contractDropdown.js b/src/app/tabs/runTab/contractDropdown.js
index fa727bbaed..0d5ae4fe3b 100644
--- a/src/app/tabs/runTab/contractDropdown.js
+++ b/src/app/tabs/runTab/contractDropdown.js
@@ -209,8 +209,8 @@ class ContractDropdownUI {
       if (network.name !== 'Main') {
         return continueTxExecution(null)
       }
-      const amount = this.dropdownLogic.fromWei(tx.value, true, 'ether')
-      const content = confirmDialog(tx, amount, gasEstimation, null, this.dropdownLogic.determineGasFees(tx), this.blockchain.determineGasPrice)
+      const amount = this.blockchain.fromWei(tx.value, true, 'ether')
+      const content = confirmDialog(tx, amount, gasEstimation, null, this.blockchain.determineGasFees(tx), this.blockchain.determineGasPrice)
 
       modalDialog('Confirm transaction', content,
         { label: 'Confirm',
@@ -220,7 +220,7 @@ class ContractDropdownUI {
             if (!content.gasPriceStatus) {
               cancelCb('Given gas price is not correct')
             } else {
-              var gasPrice = this.dropdownLogic.toWei(content.querySelector('#gasprice').value, 'gwei')
+              var gasPrice = this.blockchain.toWei(content.querySelector('#gasprice').value, 'gwei')
               continueTxExecution(gasPrice)
             }
           }}, {
diff --git a/src/app/tabs/runTab/model/blockchain.js b/src/app/tabs/runTab/model/blockchain.js
index ddbb72a661..f651016b68 100644
--- a/src/app/tabs/runTab/model/blockchain.js
+++ b/src/app/tabs/runTab/model/blockchain.js
@@ -93,6 +93,33 @@ class Blockchain {
     return Web3.utils.fromWei(value.toString(10), unit || 'ether')
   }
 
+  toWei (value, unit) {
+    return Web3.utils.toWei(value, unit || 'gwei')
+  }
+
+  calculateFee (gas, gasPrice, unit) {
+    return Web3.utils.toBN(gas).mul(Web3.utils.toBN(Web3.utils.toWei(gasPrice.toString(10), unit || 'gwei')))
+  }
+
+  determineGasFees (tx) {
+    const determineGasFeesCb = (gasPrice, cb) => {
+      let txFeeText, priceStatus
+      // TODO: this try catch feels like an anti pattern, can/should be
+      // removed, but for now keeping the original logic
+      try {
+        var fee = this.calculateFee(tx.gas, gasPrice)
+        txFeeText = ' ' + this.fromWei(fee, false, 'ether') + ' Ether'
+        priceStatus = true
+      } catch (e) {
+        txFeeText = ' Please fix this issue before sending any transaction. ' + e.message
+        priceStatus = false
+      }
+      cb(txFeeText, priceStatus)
+    }
+
+    return determineGasFeesCb
+  }
+
 }
 
 module.exports = Blockchain
diff --git a/src/app/tabs/runTab/model/dropdownlogic.js b/src/app/tabs/runTab/model/dropdownlogic.js
index 573245d223..78497907fa 100644
--- a/src/app/tabs/runTab/model/dropdownlogic.js
+++ b/src/app/tabs/runTab/model/dropdownlogic.js
@@ -1,10 +1,8 @@
 var ethJSUtil = require('ethereumjs-util')
 var remixLib = require('remix-lib')
 var txHelper = remixLib.execution.txHelper
-var typeConversion = remixLib.execution.typeConversion
 var CompilerAbstract = require('../../../compiler/compiler-abstract')
 var EventManager = remixLib.EventManager
-var Web3 = require('web3')
 
 class DropdownLogic {
   constructor (compilersArtefacts, config, editor, runView) {
@@ -96,40 +94,6 @@ class DropdownLogic {
     }
   }
 
-  fromWei (value, doTypeConversion, unit) {
-    if (doTypeConversion) {
-      return Web3.utils.fromWei(typeConversion.toInt(value), unit || 'ether')
-    }
-    return Web3.utils.fromWei(value.toString(10), unit || 'ether')
-  }
-
-  toWei (value, unit) {
-    return Web3.utils.toWei(value, unit || 'gwei')
-  }
-
-  calculateFee (gas, gasPrice, unit) {
-    return Web3.utils.toBN(gas).mul(Web3.utils.toBN(Web3.utils.toWei(gasPrice.toString(10), unit || 'gwei')))
-  }
-
-  determineGasFees (tx) {
-    const determineGasFeesCb = (gasPrice, cb) => {
-      let txFeeText, priceStatus
-      // TODO: this try catch feels like an anti pattern, can/should be
-      // removed, but for now keeping the original logic
-      try {
-        var fee = this.calculateFee(tx.gas, gasPrice)
-        txFeeText = ' ' + this.fromWei(fee, false, 'ether') + ' Ether'
-        priceStatus = true
-      } catch (e) {
-        txFeeText = ' Please fix this issue before sending any transaction. ' + e.message
-        priceStatus = false
-      }
-      cb(txFeeText, priceStatus)
-    }
-
-    return determineGasFeesCb
-  }
-
   getCompilerContracts () {
     return this.compilersArtefacts['__last'].getData().contracts
   }
diff --git a/src/app/tabs/runTab/model/recorder.js b/src/app/tabs/runTab/model/recorder.js
index 73c15a15a7..7e3c48028b 100644
--- a/src/app/tabs/runTab/model/recorder.js
+++ b/src/app/tabs/runTab/model/recorder.js
@@ -4,9 +4,7 @@ var remixLib = require('remix-lib')
 var EventManager = remixLib.EventManager
 var format = remixLib.execution.txFormat
 var txHelper = remixLib.execution.txHelper
-var typeConversion = remixLib.execution.typeConversion
 var helper = require('../../../../lib/helper.js')
-var Web3 = require('web3')
 
 /**
   * Record transaction as long as the user create them.
@@ -288,40 +286,6 @@ class Recorder {
     return address
   }
 
-  fromWei (value, doTypeConversion, unit) {
-    if (doTypeConversion) {
-      return Web3.utils.fromWei(typeConversion.toInt(value), unit || 'ether')
-    }
-    return Web3.utils.fromWei(value.toString(10), unit || 'ether')
-  }
-
-  toWei (value, unit) {
-    return Web3.utils.toWei(value, unit || 'gwei')
-  }
-
-  calculateFee (gas, gasPrice, unit) {
-    return Web3.utils.toBN(gas).mul(Web3.utils.toBN(Web3.utils.toWei(gasPrice.toString(10), unit || 'gwei')))
-  }
-
-  determineGasFees (tx) {
-    const determineGasFeesCb = (gasPrice, cb) => {
-      let txFeeText, priceStatus
-      // TODO: this try catch feels like an anti pattern, can/should be
-      // removed, but for now keeping the original logic
-      try {
-        var fee = this.calculateFee(tx.gas, gasPrice)
-        txFeeText = ' ' + this.fromWei(fee, false, 'ether') + ' Ether'
-        priceStatus = true
-      } catch (e) {
-        txFeeText = ' Please fix this issue before sending any transaction. ' + e.message
-        priceStatus = false
-      }
-      cb(txFeeText, priceStatus)
-    }
-
-    return determineGasFeesCb
-  }
-
   runScenario (continueCb, promptCb, alertCb, confirmationCb, logCallBack, cb) {
     var currentFile = this.config.get('currentFile')
     this.fileManager.fileProviderOf(currentFile).get(currentFile, (error, json) => {
diff --git a/src/app/tabs/runTab/recorder.js b/src/app/tabs/runTab/recorder.js
index cbef6f1d71..5c7231b6cc 100644
--- a/src/app/tabs/runTab/recorder.js
+++ b/src/app/tabs/runTab/recorder.js
@@ -81,8 +81,8 @@ class RecorderUI {
       if (network.name !== 'Main') {
         return continueTxExecution(null)
       }
-      const amount = this.recorder.fromWei(tx.value, true, 'ether')
-      const content = confirmDialog(tx, amount, gasEstimation, null, this.recorder.determineGasFees(tx), this.blockchain.determineGasPrice)
+      const amount = this.blockchain.fromWei(tx.value, true, 'ether')
+      const content = confirmDialog(tx, amount, gasEstimation, null, this.blockchain.determineGasFees(tx), this.blockchain.determineGasPrice)
 
       modalDialog('Confirm transaction', content,
         { label: 'Confirm',
@@ -92,7 +92,7 @@ class RecorderUI {
             if (!content.gasPriceStatus) {
               cancelCb('Given gas price is not correct')
             } else {
-              var gasPrice = this.recorder.toWei(content.querySelector('#gasprice').value, 'gwei')
+              var gasPrice = this.blockchain.toWei(content.querySelector('#gasprice').value, 'gwei')
               continueTxExecution(gasPrice)
             }
           }}, {