Free weather forecast API — no API key required. 7-day hourly forecasts, historical data, and climate projections.

Current weather, forecasts, historical data, and air quality for any location. Free tier: 1,000 calls/day.

Current weather, 14-day forecasts, historical data, and astronomy data. Free tier: 1M calls/month.

Console-friendly weather API. Returns plain text, JSON, or PNG weather reports with no registration.

Data about every country: name, capital, population, area, currencies, languages, flag, and borders. No key required.

Free geocoding and reverse-geocoding using OpenStreetMap data. Convert addresses to coordinates and back.

Geolocate any IP address — country, city, ISP, timezone, latitude, and longitude. Free for non-commercial use.

IP geolocation, ASN, carrier, and timezone data. Free tier: 50,000 requests/month.

IP geolocation API returning country, city, timezone, and coordinates. Completely free with no rate limits.

Timezone lookup by coordinates or city name. Returns UTC offset, DST status, and timezone name. Free: 1 call/second.

Cryptocurrency prices, market data, exchange rates, and coin metadata. Free tier: 30 calls/minute with no key.

Live and historical currency exchange rates for 161 currencies. Free tier: 1,500 requests/month.

Open-source foreign exchange rates backed by ECB data. No API key required. Daily and historical rates.

Stock prices, technical indicators, forex, and crypto data. Free tier: 25 requests/day.

Stock data, financial statements, earnings, ratios, and market news. Free tier: 250 requests/day.

The Movie Database — movies, TV shows, cast, crew, reviews, trailers, and streaming providers. Free with attribution.

Movie and TV show data from IMDb: titles, ratings, cast, plot, poster, and awards. Free tier: 1,000 requests/day.

TV show schedules, episode lists, cast info, and images. No API key required for basic access.

Open music encyclopedia — artists, albums, recordings, releases, and labels. Free and open-source.

Music scrobbling, artist bios, album info, tags, and similar artists. Free tier available.

Book data from the Internet Archive — titles, authors, covers, ISBN lookups, and reading lists. Completely free.

Complete Pokémon data — species, abilities, moves, items, evolutions, and locations. Free and no key required.

Collection of NASA APIs: Astronomy Picture of the Day, Mars rover photos, asteroid tracking, Earth imagery, and more.

Launch data, rockets, capsules, launchpads, and mission history for SpaceX. Free and no key required.

Real-time International Space Station location (lat/long) and number of people currently in space.

Global air quality measurements from thousands of monitoring stations. Pollutants: PM2.5, NO2, O3, CO, SO2, and BC.

Real-time and historical earthquake data from the USGS. Filter by magnitude, location, and time range.

Global development indicators — GDP, population, poverty, health, education, and energy data for 250 countries.

Search and retrieve articles from 80,000+ news sources worldwide. Free tier: 100 requests/day for developer use.

Search The Guardian's content API for articles, tags, sections, and editions. Free: 12 calls/second.

Search NYT articles, bestsellers, movies, books, and top stories. Free tier: 500 requests/day per key.

Y Combinator's Hacker News stories, comments, jobs, and user profiles. Public API, no key required.

Fake REST API for testing and prototyping. Posts, users, comments, albums, photos, todos — no setup required.

Fake JSON data for testing: products, users, carts, posts, recipes, and images. Supports pagination and search.

Generate random user profiles including name, email, address, avatar, and demographics. No key needed.

Random placeholder images with optional size, blur, and grayscale. No key required.

HTTP testing service. Inspect request headers, body, auth, status codes, cookies, and more from your own HTTP client.

Aggregated GitHub repository listing hundreds of categorised free public APIs with auth type and HTTPS status.

Global meal and recipe database with images, ingredients, instructions, and YouTube videos. Free tier available.

Cocktail and drink database with recipes, ingredients, and photos. Free tier with API key.

Open database of food products worldwide — ingredients, nutrition facts, allergens, and labels. No key needed.

US government food nutrition database — calories, macros, vitamins, and minerals for 600,000+ foods.

Word definitions, phonetics, part of speech, examples, synonyms, and antonyms. Free and no key required.

Open-source machine translation API. Self-hostable. Free public instance available at libretranslate.com.

Grammar, spelling, and style checker for 30+ languages. Free tier: 20 requests/minute.

US government open data portal — datasets across agriculture, climate, education, energy, finance, and health.

European Union statistics — demographics, economy, environment, and regional data. REST API with no key.

Public holidays for 100+ countries and regions. Supports historical and future years. No key required.

US FDA open data — drug adverse events, recalls, labeling, medical devices, and food safety. Free: 240 requests/minute.