diff --git a/apps/abcswap/src/pages/Swap.tsx b/apps/abcswap/src/pages/Swap.tsx
index a0df9e5..c6ee0fd 100644
--- a/apps/abcswap/src/pages/Swap.tsx
+++ b/apps/abcswap/src/pages/Swap.tsx
@@ -1,20 +1,20 @@
-import { useState } from "react";
-import { useNavigate, useParams } from "react-router-dom";
 import { EditIcon, InfoIcon, RepeatIcon } from '@chakra-ui/icons';
 import { Box, Button, Checkbox, Flex, HStack, Icon, IconButton, Input, Link, NumberInput, NumberInputField, Text, Tooltip, VStack } from "@chakra-ui/react";
 import { ConnectButton } from '@rainbow-me/rainbowkit';
+import { useState } from "react";
+import { useNavigate, useParams } from "react-router-dom";
 import { formatUnits, parseUnits } from "viem";
 import { useAccount, useBalance } from "wagmi";
 
-import { useProcessTransactions } from "transactions-modal";
-import { TokenSelector } from "commons-ui/src/components/TokenSelector";
-import TermsModal from "commons-ui/src/components/TermsModal";
 import PrivacyPolicyModal from "commons-ui/src/components/PrivacyPolicyModal";
+import TermsModal from "commons-ui/src/components/TermsModal";
+import { TokenSelector } from "commons-ui/src/components/TokenSelector";
+import { useProcessTransactions } from "transactions-modal";
 
+import { formatWithMaxDecimals, trimDecimals } from "commons-ui/src/utils";
 import { useAbcInfo } from "../hooks/useAbcInfo";
 import { useBondingCurvePrice } from "../hooks/useBondingCurvePrice";
 import useSwapSteps from "../hooks/useSwapSteps";
-import { formatWithFixedDecimals } from "commons-ui/src/utils"
 
 export default function SimpleConvert() {
 
@@ -65,18 +65,18 @@ export default function SimpleConvert() {
     const invertedUnitaryPrice = unitaryPrice ? (10n ** BigInt(fromToken.decimals)) ** 2n / unitaryPrice : undefined;
 
     function invert() {
-        setAmount((convertedAmount && formatUnits(convertedAmount, toToken.decimals) || '0'));
+        setAmount(formatDisplayNumber(convertedAmount && formatUnits(convertedAmount, toToken.decimals) || '0'));
         setInverted(inverted => !inverted);
     }
 
     function handleSwap() {
-        const subtitle = `Swapping ${amount} ${fromToken.symbol} to ${formatWithFixedDecimals(convertedAmountFormatted, 3)} ${toToken.symbol}`;
+        const subtitle = `Swapping ${formatDisplayNumber(amount)} ${fromToken.symbol} to ${formatDisplayNumber(convertedAmountFormatted)} ${toToken.symbol}`;
         processTransactions("Swapping Tokens", subtitle, steps);
     }
 
     function handleAmountChange(amount: string) {
         amount = amount.replace(/^0+(?!\.|$)/, ''); // Avoiding leading 0s
-        /^\d*\.?\d*$/.test(amount) && setAmount(amount);
+        /^\d*\.?\d*$/.test(amount) && setAmount(trimDecimals(amount, 4));
     }
 
     function ActionButton(params: { title: string, isDisabled: boolean, onClick: () => void }): JSX.Element {
@@ -117,6 +117,10 @@ export default function SimpleConvert() {
         )
     }
 
+    function formatDisplayNumber(number: string | undefined) {
+        return number?formatWithMaxDecimals(number, 4):'';
+    }
+
     return (
         <VStack bg="brand.100" pb="100px">
             <HStack w="949px" h="97px" borderRadius="16px" bgColor="brand.300" mt="32px">
@@ -162,10 +166,10 @@ export default function SimpleConvert() {
                         </NumberInput>
                         <VStack ml="26px" mt="8px" alignItems="initial">
                             <HStack>
-                                <Text fontSize="14px">Balance: {fromTokenBalance?.formatted}</Text>
+                                <Text fontSize="14px">Balance: {formatDisplayNumber(fromTokenBalance?.formatted)}</Text>
                                 <Link as="b" fontSize="14px" onClick={() => setAmount(fromTokenBalance?.formatted || '0')}>Max</Link>
                             </HStack>
-                            <Text as="b" fontSize="md" color="brand.900">1 {fromToken.symbol} = {formatUnits(unitaryPrice || 0n, toToken.decimals)} {toToken.symbol}</Text>
+                            <Text as="b" fontSize="md" color="brand.900">1 {fromToken.symbol} = {formatDisplayNumber(formatUnits(unitaryPrice || 0n, toToken.decimals))} {toToken.symbol}</Text>
                         </VStack>
                     </Box>
                     <div style={{ width: '0px', position: 'relative' }}>
@@ -188,10 +192,10 @@ export default function SimpleConvert() {
                         <TokenSelector token={toToken} ml="auto" mr="26px" mt="16px" />
 
                         <Flex direction="column" align="flex-end" mr="26px" mt="8px">
-                            <Input w="100%" mt="50px" pr='0' value={convertedAmountFormatted} readOnly fontSize="50px" border="none" placeholder='0' textAlign="right" />
+                            <Input w="100%" mt="50px" pr='0' value={formatDisplayNumber(convertedAmountFormatted)} readOnly fontSize="50px" border="none" placeholder='0' textAlign="right" />
                             <VStack ml="26px" mt="8px" alignItems="end">
-                                <Text fontSize="14px">Balance: {toTokenBalance?.formatted}</Text>
-                                <Text as="b" fontSize="md" color="brand.900">1 {toToken.symbol} = {formatUnits(invertedUnitaryPrice || 0n, fromToken.decimals)} {fromToken.symbol}</Text>
+                                <Text fontSize="14px">Balance: {formatDisplayNumber(toTokenBalance?.formatted)}</Text>
+                                <Text as="b" fontSize="md" color="brand.900">1 {toToken.symbol} = {formatDisplayNumber(formatUnits(invertedUnitaryPrice || 0n, fromToken.decimals))} {fromToken.symbol}</Text>
                             </VStack>
                         </Flex>
                     </Box>
diff --git a/pkg/commons-ui/src/utils.ts b/pkg/commons-ui/src/utils.ts
index 48c0e40..f2b6a81 100644
--- a/pkg/commons-ui/src/utils.ts
+++ b/pkg/commons-ui/src/utils.ts
@@ -1,14 +1,28 @@
-export function formatWithFixedDecimals(value: string, fixedDecimals: number) {
-    let display = value.toString()
-
-    const negative = display.startsWith('-')
-    if (negative) display = display.slice(1)
-
+function parseNumber(value: string) : {isNegative: Boolean, integer: string, fraction: string}{
+    const positive = value.startsWith('-');
     let [integer, fraction] = [
-        display.split('.')[0],
-        display.split('.')[1] || ''
-    ]
+        value.split('.')[0],
+        value.split('.')[1] || ''
+    ] 
+    return {isNegative: positive, integer: integer, fraction: fraction}
+}
+
+export function formatWithFixedDecimals(value: string, fixedDecimals: number) {
+    let {isNegative, integer, fraction} = parseNumber(value);
     fraction = fraction.padEnd(fixedDecimals, '0')
     fraction = fraction.slice(0, fixedDecimals)
-    return `${negative ? '-' : ''}${integer || '0'}${`.${fraction}`}`
+    return `${isNegative ? '-' : ''}${integer || '0'}${`.${fraction}`}`
+}
+
+export function formatWithMaxDecimals(value: string, maxDecimals: number) {
+    let {isNegative, integer, fraction} = parseNumber(value);
+    fraction = fraction.slice(0, maxDecimals)
+    return `${isNegative ? '-' : ''}${integer || '0'}${fraction.length>0?`.${fraction}`:''}`
 }
+
+export function trimDecimals(value: string, maxDecimals: number) {
+    let {isNegative, integer, fraction} = parseNumber(value);
+    fraction = fraction.slice(0, maxDecimals)
+    let hasDecimalSeparator = value.includes('.');
+    return `${isNegative ? '-' : ''}${integer || '0'}${hasDecimalSeparator?'.':''}${`${fraction}`}`
+}
\ No newline at end of file