Best Free Finance & Stock Market APIs
Historical stock series, real-time FX currency rates, technical trading indicators, and macroeconomic data for fintech developers.
Overview & Comparison Matrix
15 Endpoints| API Name | Category | Auth Status | Rate Limit | Action |
|---|---|---|---|---|
| Alpha Vantage | Finans ve Borsa | Free Key | 5 istek/dk | View API |
| Finnhub | Finans ve Borsa | Free Key | 60 istek/dk | View API |
| Twelve Data | Finans ve Borsa | Free Key | 800 istek/gün | View API |
| Yahoo Finance API | Finans ve Borsa | Free Key | 500 istek/gün | View API |
| Polygon.io | Finans ve Borsa | Free Key | 5 istek/dk | View API |
| IEX Cloud | Finans ve Borsa | Free Key | 50.000 istek/ay | View API |
| Marketstack | Finans ve Borsa | Free Key | 100 istek/ay | View API |
| Frankfurter | Finans ve Borsa | Free Key | Sınırsız | View API |
| Exchange Rates API | Finans ve Borsa | Free Key | 250 istek/ay | View API |
| Open Exchange Rates | Finans ve Borsa | Free Key | 1000 istek/ay | View API |
All Verified Endpoints (15)
Alpha Vantage
Real-time and historical stock market quotes, forex, and crypto time series
Finnhub
Institutional-grade real-time market data, company fundamentals, and earnings
Twelve Data
Global financial market data for equities, forex, indices, and crypto
Yahoo Finance API
Real-time stock market quotes, ticker charts, and financial statements
Polygon.io
Ultra low-latency US stock market, options, forex, and crypto feeds
IEX Cloud
Institutional financial datasets, stock prices, and corporate actions
Marketstack
Global stock market ticker quotes, historical data, and index tracking
Frankfurter
Open-source currency exchange rate API tracking the European Central Bank
Exchange Rates API
Foreign currency exchange rates and reliable conversion endpoints
Open Exchange Rates
Reliable foreign exchange rates and currency conversion data
Free Currency Converter
Real-time fiat currency converter supporting 150+ world currencies
Currency API
Live foreign exchange rates, historic quotes, and currency conversion
Fixer
Foreign exchange rates and historical currency conversion API
Financial Modeling Prep
Company financial modeling, SEC filings, and financial ratios
Global Currency Exchange Rates
Live fiat forex currency exchange rates updated continuously.
Frequently Asked Questions & Developer Guide
Which financial API provides the best free stock market data?
Finnhub offers real-time quotes, earnings news, and market sentiment, while Alpha Vantage is unmatched for historical series and 50+ technical indicators.
Are there free currency exchange APIs without API keys?
Yes, Frankfurter and ExchangeRate-API offer free unauthenticated endpoints for real-time forex conversions.
Is stock data real-time or delayed on free tiers?
Most free stock data APIs provide 15-minute delayed data due to exchange licensing rules, while forex and crypto feeds are real-time.