RoutingTool vs BankCheck

Overview

RoutingTool is a US-focused routing number database and lookup service that has been active for approximately eight years. As of March 2026, it draws around 45,000 monthly visitors, with roughly 92.5% of its traffic coming from the United States. RoutingTool allows users to look up ABA routing numbers by bank name, state, or number, and provides bank details including name, address, and phone number. It offers a paid API at $5/month with support for PHP, C#, Java, and Python. The free tier includes ads, and batch CSV upload is available for bulk validation of routing numbers.

BankCheck is a multi-format bank number validation tool that covers IBANs across 80+ countries, US routing numbers, UK sort codes, and SWIFT/BIC codes. All validation runs entirely client-side in the browser — no bank numbers are ever sent to a server. BankCheck is completely free with no ads, no signup, and a public REST API that requires no account or API key. Where RoutingTool specializes in US routing numbers, BankCheck provides a broader validation toolkit spanning multiple international banking formats.

Feature Comparison

Where RoutingTool Excels

RoutingTool's core strength is its deep focus on the US banking system. With approximately eight years of operation, it has built a comprehensive database of ABA routing numbers and provides detailed bank information including institution name, physical address, phone number, and routing number type (wire transfer, ACH, or both). For users whose needs are entirely within the US domestic banking system, RoutingTool offers a well-established, single-purpose resource that does exactly what its name suggests.

The reverse lookup capability is particularly useful. Rather than only validating a known routing number, RoutingTool allows users to search by bank name or state to find the correct routing number — a workflow that helps when setting up direct deposits, wire transfers, or ACH payments and you know the bank but not the specific routing number. This lookup-by-bank approach serves a different use case than pure validation.

RoutingTool also supports batch CSV validation, which is valuable for payroll departments, accounting firms, and payment processors that need to verify large lists of routing numbers at once. The paid API includes SDKs for PHP, C#, Java, and Python, making integration straightforward for teams working in those ecosystems. At $5/month, the API pricing is accessible for small businesses that need programmatic access to routing number data.

Where BankCheck Differs

The most fundamental difference is scope. RoutingTool handles US routing numbers exclusively, while BankCheck validates multiple international banking formats in a single interface. Users who work with IBANs for European payments, UK sort codes for domestic UK transfers, SWIFT/BIC codes for international wire identification, and US routing numbers for ACH and wire transfers can handle all of these through BankCheck without switching between different tools. The auto-detection engine identifies the format automatically, so you simply paste any bank number and get an instant result.

Privacy is another key differentiator. BankCheck's validation runs entirely in the browser using client-side JavaScript. No bank numbers are sent to any server, no data is logged, and no network request is made during validation. RoutingTool processes lookups server-side, which means routing numbers are transmitted to and processed on RoutingTool's infrastructure. For users handling sensitive financial information, or for organizations with strict data handling policies, BankCheck's client-side architecture provides a stronger privacy guarantee.

BankCheck is also completely free and ad-free across all features. The public REST API requires no signup, no API key, and no monthly fee. RoutingTool's free web lookup includes advertisements, and API access requires a paid subscription. For developers building side projects, startups testing payment integrations, or teams that need quick validation without budget approval, BankCheck removes every barrier to getting started.

Bottom Line

RoutingTool and BankCheck are complementary tools that serve different primary audiences. RoutingTool is a solid choice for users who work exclusively within the US banking system and need features like reverse bank-name lookup, batch CSV validation, and detailed bank contact information for ABA routing numbers. Its eight-year track record and focused database make it a reliable single-purpose resource.

BankCheck is the better fit for users who need multi-format validation across international banking systems, who prioritize privacy through client-side processing, or who want a completely free and ad-free experience with no account required. If your work touches payments beyond the US — or if you want to validate a routing number without your data leaving the browser — BankCheck covers that ground while also handling IBANs, sort codes, and SWIFT/BIC codes in the same tool.