diff --git a/app/components/Views/SendFlow/Amount/index.js b/app/components/Views/SendFlow/Amount/index.js
index 368a175da23..e3ef7640cdc 100644
--- a/app/components/Views/SendFlow/Amount/index.js
+++ b/app/components/Views/SendFlow/Amount/index.js
@@ -35,7 +35,8 @@ import {
 	fiatNumberToTokenMinimalUnit,
 	weiToFiatNumber,
 	balanceToFiatNumber,
-	getCurrencySymbol
+	getCurrencySymbol,
+	handleWeiNumber
 } from '../../../../util/number';
 import { getTicker, generateTransferData, getEther } from '../../../../util/transactions';
 import { hexToBN, BNToHex } from 'gaba/dist/util';
@@ -523,16 +524,23 @@ class Amount extends PureComponent {
 	onInputChange = (inputValue, selectedAsset) => {
 		const { contractExchangeRates, conversionRate, currentCurrency, ticker } = this.props;
 		const { internalPrimaryCurrencyIsCrypto } = this.state;
-		let inputValueConversion, renderableInputValueConversion, hasExchangeRate;
+		let inputValueConversion, renderableInputValueConversion, hasExchangeRate, comma;
+		// Remove spaces from input
+		inputValue = inputValue && inputValue.replace(/\s+/g, '');
+		// Handle semicolon for other languages
+		if (inputValue && inputValue.includes(',')) {
+			comma = true;
+			inputValue = inputValue.replace(',', '.');
+		}
 		const processedTicker = getTicker(ticker);
-		const processedInputValue = isDecimal(inputValue) ? inputValue : '0';
+		const processedInputValue = isDecimal(inputValue) ? handleWeiNumber(inputValue) : '0';
 		selectedAsset = selectedAsset || this.props.selectedAsset;
 		if (selectedAsset.isETH) {
 			hasExchangeRate = true;
 			if (internalPrimaryCurrencyIsCrypto) {
-				inputValueConversion = `${weiToFiatNumber(toWei(processedInputValue.toString(16)), conversionRate)}`;
+				inputValueConversion = `${weiToFiatNumber(toWei(processedInputValue), conversionRate)}`;
 				renderableInputValueConversion = `${weiToFiat(
-					toWei(processedInputValue.toString(16)),
+					toWei(processedInputValue),
 					conversionRate,
 					currentCurrency
 				)}`;
@@ -565,7 +573,7 @@ class Amount extends PureComponent {
 				renderableInputValueConversion = `${inputValueConversion} ${selectedAsset.symbol}`;
 			}
 		}
-
+		if (comma) inputValue = inputValue && inputValue.replace('.', ',');
 		inputValueConversion = inputValueConversion === '0' ? undefined : inputValueConversion;
 		this.setState({
 			inputValue,
diff --git a/app/util/number.js b/app/util/number.js
index f2d312f6b98..f48a0341c94 100644
--- a/app/util/number.js
+++ b/app/util/number.js
@@ -315,6 +315,20 @@ export function weiToFiatNumber(wei, conversionRate, decimalsToShow = 5) {
 	return value;
 }
 
+/**
+ * Handles wie input to have less or equal to 18 decimals
+ *
+ * @param {string} wei - Amount in decimal notation
+ * @returns {string} - Number string with less or equal 18 decimals
+ */
+export function handleWeiNumber(wei) {
+	const comps = wei.split('.');
+	let fraction = comps[1];
+	if (fraction && fraction.length > 18) fraction = fraction.substring(0, 18);
+	const finalWei = fraction ? [comps[0], fraction].join('.') : comps[0];
+	return finalWei;
+}
+
 /**
  * Converts fiat number as human-readable fiat string to wei expressed as a BN
  *
@@ -325,8 +339,10 @@ export function weiToFiatNumber(wei, conversionRate, decimalsToShow = 5) {
 export function fiatNumberToWei(fiat, conversionRate) {
 	const floatFiatConverted = parseFloat(fiat) / conversionRate;
 	const base = Math.pow(10, 18);
-	const weiNumber = Math.trunc(base * floatFiatConverted);
-	const weiBN = numberToBN(weiNumber);
+	let weiNumber = Math.trunc(base * floatFiatConverted);
+	// avoid decimals
+	weiNumber = weiNumber.toLocaleString('fullwide', { useGrouping: false }).split('.');
+	const weiBN = numberToBN(weiNumber[0]);
 	return weiBN;
 }
 
diff --git a/app/util/number.test.js b/app/util/number.test.js
index 5a2018c746c..f5b253dc95e 100644
--- a/app/util/number.test.js
+++ b/app/util/number.test.js
@@ -17,7 +17,8 @@ import {
 	fiatNumberToTokenMinimalUnit,
 	balanceToFiat,
 	balanceToFiatNumber,
-	renderFiat
+	renderFiat,
+	handleWeiNumber
 } from './number';
 import numberToBN from 'number-to-bn';
 
@@ -189,6 +190,16 @@ describe('Number utils :: weiToFiatNumber', () => {
 	});
 });
 
+describe('Number utils :: handleWeiNumber', () => {
+	it('weiToFiatNumber', () => {
+		expect(handleWeiNumber('1.123')).toEqual('1.123');
+		expect(handleWeiNumber('1')).toEqual('1');
+		expect(handleWeiNumber('1.01')).toEqual('1.01');
+		expect(handleWeiNumber('1.111111111111111111')).toEqual('1.111111111111111111');
+		expect(handleWeiNumber('1.1111111111111111112222')).toEqual('1.111111111111111111');
+	});
+});
+
 describe('Number utils :: fiatNumberToWei', () => {
 	it('fiatNumberToWei', () => {
 		const one = numberToBN(Math.pow(10, 18));