diff --git a/libs/metrics/src/l1/l1MetricsService.ts b/libs/metrics/src/l1/l1MetricsService.ts
index 35ebcec..e7d2ad1 100644
--- a/libs/metrics/src/l1/l1MetricsService.ts
+++ b/libs/metrics/src/l1/l1MetricsService.ts
@@ -1,14 +1,7 @@
 import { isNativeError } from "util/types";
 import { Inject, Injectable, LoggerService } from "@nestjs/common";
 import { WINSTON_MODULE_NEST_PROVIDER } from "nest-winston";
-import {
-    encodeFunctionData,
-    erc20Abi,
-    formatGwei,
-    formatUnits,
-    parseEther,
-    zeroAddress,
-} from "viem";
+import { encodeFunctionData, erc20Abi, formatGwei, parseEther, zeroAddress } from "viem";
 
 import { L1ProviderException } from "@zkchainhub/metrics/exceptions/provider.exception";
 import { bridgeHubAbi, sharedBridgeAbi } from "@zkchainhub/metrics/l1/abis";
@@ -19,7 +12,6 @@ import { AbiWithAddress, ChainId, L1_CONTRACTS, vitalikAddress } from "@zkchainh
 import { ETH, WETH } from "@zkchainhub/shared/tokens/tokens";
 
 const ONE_ETHER = parseEther("1");
-const ETHER_DECIMALS = 18;
 
 /**
  * Acts as a wrapper around Viem library to provide methods to interact with an EVM-based blockchain.
@@ -100,10 +92,10 @@ export class L1MetricsService {
             }
 
             return {
-                gasPriceInGwei: Number(formatGwei(gasPrice)),
-                ethPrice: ethPriceInUsd,
-                ethTransferGas: Number(ethTransferGasCost),
-                erc20TransferGas: Number(erc20TransferGasCost),
+                gasPriceInGwei: formatGwei(gasPrice),
+                ethPrice: ethPriceInUsd?.toString(),
+                ethTransferGas: ethTransferGasCost.toString(),
+                erc20TransferGas: erc20TransferGasCost.toString(),
             };
         } catch (e: unknown) {
             if (isNativeError(e)) {
@@ -113,18 +105,6 @@ export class L1MetricsService {
         }
     }
 
-    /**
-     * Calculates the transaction value in USD based on the gas used, gas price, and ether price.
-     * Formula: (txGas * gasPriceInWei/1e18) * etherPrice
-     * @param txGas - The amount of gas used for the transaction.
-     * @param gasPrice - The price of gas in wei.
-     * @param etherPrice - The current price of ether in USD.
-     * @returns The transaction value in USD.
-     */
-    private transactionInUsd(txGas: bigint, gasPriceInWei: bigint, etherPrice: number): number {
-        return Number(formatUnits(txGas * gasPriceInWei, ETHER_DECIMALS)) * etherPrice;
-    }
-
     //TODO: Implement feeParams.
     async feeParams(_chainId: number): Promise<{
         batchOverheadL1Gas: number;
diff --git a/libs/metrics/src/types/gasInfo.type.ts b/libs/metrics/src/types/gasInfo.type.ts
index 25e8e0b..d270e51 100644
--- a/libs/metrics/src/types/gasInfo.type.ts
+++ b/libs/metrics/src/types/gasInfo.type.ts
@@ -1,6 +1,6 @@
 export type GasInfo = {
-    gasPriceInGwei: number;
-    ethPrice?: number; // USD
-    ethTransferGas: number; // units of gas
-    erc20TransferGas: number; // units of gas
+    gasPriceInGwei: string;
+    ethPrice?: string; // USD
+    ethTransferGas: string; // units of gas
+    erc20TransferGas: string; // units of gas
 };
diff --git a/libs/metrics/test/unit/l1/l1MetricsService.spec.ts b/libs/metrics/test/unit/l1/l1MetricsService.spec.ts
index d9527b7..6ce1bfb 100644
--- a/libs/metrics/test/unit/l1/l1MetricsService.spec.ts
+++ b/libs/metrics/test/unit/l1/l1MetricsService.spec.ts
@@ -153,10 +153,10 @@ describe("L1MetricsService", () => {
             expect(mockGetTokenPrices).toHaveBeenCalledWith([ETH.coingeckoId]);
 
             expect(result).toEqual({
-                gasPriceInGwei: 50,
-                ethPrice: 2000,
-                ethTransferGas: 21000,
-                erc20TransferGas: 65000,
+                gasPriceInGwei: "50",
+                ethPrice: "2000",
+                ethTransferGas: "21000",
+                erc20TransferGas: "65000",
             });
         });
 
@@ -175,10 +175,10 @@ describe("L1MetricsService", () => {
 
             // Assertions
             expect(result).toEqual({
-                gasPriceInGwei: 50,
+                gasPriceInGwei: "50",
                 ethPrice: undefined,
-                ethTransferGas: 21000,
-                erc20TransferGas: 65000,
+                ethTransferGas: "21000",
+                erc20TransferGas: "65000",
             });
             expect(mockEstimateGas).toHaveBeenCalledTimes(2);
             expect(mockEstimateGas).toHaveBeenNthCalledWith(1, {