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ZIP Code API VS Convert Case Tool

Compare ZIP Code API VS Convert Case Tool and see what are their differences

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Contents:
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  2. ยป Reviews
  3. ยป Alternatives

ZIP Code API logo ZIP Code API

REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

Convert Case Tool logo Convert Case Tool

Quickly convert text to different letter cases online: lower case, UPPER CASE, Sentence case, Capitalized Case, aLtErNaTiNg cAsE, and more.
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” centroid haversine and true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data โ€” not commodity or scraped sources
  • Canadian postal coverage โ€” most peers in this space are US-only
  • True spatial radius โ€” not just centroid haversine
  • 14 years of historical ACS depth via API โ€” unusual outside of raw Census downloads
  • One endpoint for all of North America โ€” no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free โ€” 2,500 lookups/day, no credit card required, no expiry
  • Developer โ€” $49/mo, 100K credits, 300/min
  • Professional โ€” $149/mo, 350K credits, 300/min
  • Business โ€” $499/mo, 1.5M credits, 600/min
  • Credit packs โ€” one-time, from 25K ($19) up to 2M ($799)

Resources

  • Convert Case Tool
    Image date //
    2026-04-08
  • Convert Case Tool
    Image date //
    2026-04-08
  • Convert Case Tool
    Image date //
    2026-04-08
  • Convert Case Tool
    Image date //
    2026-04-08
  • Convert Case Tool
    Image date //
    2026-04-08

ZIP Code API

Website
zip-codes.com
$ Details
-
Platforms
-
Release Date
2026 April
Startup details
Country
United States
State
NY
City
Hopewell Junction
Edit details

Convert Case Tool

Website
convertcasetool.com
$ Details
free
Platforms
Web Windows MacOS Cross Platform
Release Date
2026 January
Startup details
Country
United States
Employees
250 - 499
Edit details

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Convert Case Tool features and specs

No features have been listed yet.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

Analysis of Convert Case Tool

Overall verdict

  • Convert Case Tool is a reliable, free, and easy-to-use online utility for transforming text between various letter cases, making it a solid choice for quick formatting needs.

Why this product is good

  • It's completely free to use with no sign-up or installation required
  • Offers multiple case conversion options including uppercase, lowercase, title case, sentence case, and more
  • Works instantly in the browser with a simple, intuitive interface
  • Handles large blocks of text efficiently
  • Useful for fixing accidental caps lock text or formatting content consistently

Recommended for

  • Writers and editors who need to quickly reformat text
  • Students preparing documents and assignments
  • Content creators and social media managers formatting posts
  • Developers and programmers standardizing text case
  • Anyone needing to fix improperly capitalized text without manual retyping

Category Popularity

0-100% (relative to ZIP Code API and Convert Case Tool)

ZIP Code API

Convert Case Tool

Zip Lookup
100 100%
Zip Lookup
0% 0
Text Editors
0 0%
Text Editors
100% 100
APIs
100 100%
APIs
0% 0
Text Tools
0 0%
Text Tools
100% 100

User comments

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What are some alternatives?

When comparing ZIP Code API and Convert Case Tool, you can also consider the following products

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Convert Case - Instantly convert text to UPPERCASE, lowercase, Title Case, sentence case, and more - free, fast, and no sign-up required.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

CaseConverter.cc - Case Converter is a free, open-source online tool for converting text to lowercase, uppercase, title case, capital case, or sentence case.

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

Case Converter 24 - Convert your text to uppercase, lowercase, title case, and more with Free Case Converter. 100% free and fast online tool.

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