One-to-Many

One-to-Many Crypto Exchange Rates API

Retrieve multiple cryptocurrency exchange rates with a single API request.

Price one cryptocurrency against multiple fiat currencies or digital assets through a single API request.

CoinAPI's One-to-Many Exchange Rates API eliminates the need to send dozens of individual requests when an application needs the same asset valued in multiple currencies. Instead of requesting BTC/USD, BTC/EUR, BTC/GBP, BTC/JPY, and BTC/CAD separately, developers retrieve every required exchange rate in one standardized response.

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What Are One-to-Many Exchange Rates?

A one-to-many exchange rate request retrieves the value of a single base asset against multiple quote currencies simultaneously. Instead of sending a separate API request for every currency, applications receive every required conversion in a single response.

Instead of asking, request by request:

What is BTC worth in USD?
What is BTC worth in EUR?
What is BTC worth in GBP?
What is BTC worth in JPY?

Common examples include:

Displaying BTC prices in multiple fiat currencies
Converting stablecoins into regional currencies
Valuing cryptocurrency portfolios globally
Generating international pricing dashboards
Supporting users with different local currencies

This approach dramatically simplifies pricing workflows for applications that display multiple currencies at once or need to value the same asset across different markets.

Why One-to-Many

Why Use One-to-Many Exchange Rates?

Many applications need multiple exchange rates at exactly the same time. Without a dedicated one-to-many endpoint, developers often send repeated API requests for every currency they need — and as the number of supported currencies grows, so does request volume, network overhead, and application complexity.

Feature	Benefit
One request, multiple exchange rates	Retrieve prices for one asset across many currencies simultaneously.
Reduced API calls	Replace dozens of individual requests with a single endpoint.
Lower network overhead	Minimize request latency and simplify client applications.
VWAP-based pricing	All exchange rates use CoinAPI's standardized pricing methodology.
Standardized asset identifiers	Use the same asset IDs across every supported currency.
Consistent response schema	Simplify parsing regardless of how many quote currencies are requested.

CoinAPI simplifies this process by returning multiple exchange rates for a single base asset within one response.

Price One Asset Across an Entire Currency Set

One-to-many exchange rates are ideal whenever an application displays a single asset in multiple currencies.

Instead of building custom request loops, developers can retrieve conversions for dozens of supported currencies in one operation.

Typical examples include pricing:

Bitcoin against major fiat currencies
Ethereum across global markets
Stablecoins against regional currencies
Treasury assets across reporting currencies
Portfolio holdings in multiple base currencies

This makes it easy to build applications that serve international users without increasing request complexity.

Designed for Global Cryptocurrency Applications

Modern cryptocurrency products rarely operate in a single market.

Multi-currency pricing shows up everywhere:

Wallets display balances in a user's preferred currency.
Payment platforms settle transactions across regions.
Portfolio dashboards compare asset values globally.
Treasury systems report balances in multiple base currencies.

One-to-many exchange rates allow these applications to retrieve all required conversions efficiently, helping developers spend less time managing API requests and more time building features.

Supported Assets and Currencies

CoinAPI supports one-to-many exchange rate requests across thousands of cryptocurrencies and fiat currencies using standardized asset identifiers.

Applications can retrieve exchange rates for assets including:

Bitcoin (BTC)Ethereum (ETH)Solana (SOL)

XRPBNBUSDTUSDC

and quote them against currencies such as:

USDEURGBPJPY

CHFCADAUD

along with thousands of additional supported cryptocurrencies and fiat currencies.

Developers can also discover supported assets through the metadata endpoints before requesting exchange rates, ensuring consistent integrations across applications.

Consistent Pricing Across Every Currency

When an application retrieves multiple exchange rates independently, each request may complete at a slightly different moment. During periods of market volatility, those small timing differences can lead to inconsistent pricing across currencies.

One-to-many exchange rates solve this by returning all requested conversions together in a single response, making it easier to present a consistent view of the market across every supported currency. Applications can display synchronized pricing without coordinating multiple API requests or merging separate responses.

Simple Integration Through REST

The One-to-Many Exchange Rates API is available through CoinAPI's REST interface.

Applications specify a single base asset and receive exchange rates for multiple quote currencies in one standardized response. The API uses the same asset identifiers, authentication model, and response conventions as the rest of the Exchange Rates API, making it easy to integrate into existing applications.

Developers can use the endpoint to:

Retrieve exchange rates for global pricing pages
Value digital assets across multiple reporting currencies
Build multi-currency dashboards
Generate conversion tables
Reduce network requests in high-volume applications

Use Cases

Common Use Cases

One-to-many exchange rates are ideal for applications that need the same asset priced across multiple currencies at once.

Industry	How One-to-Many Exchange Rates Are Used
Crypto Wallets	Display account balances in each user's preferred currency.
Portfolio Trackers	Value assets across multiple reporting currencies simultaneously.
Payment Platforms	Convert cryptocurrency payments into multiple settlement currencies.
Treasury Management	Monitor digital asset exposure across regional currencies.
Accounting Software	Generate financial reports using different base currencies.
Exchanges & Brokers	Power global price widgets and currency selectors.
Business Intelligence	Feed dashboards with synchronized multi-currency pricing.
Enterprise Platforms	Reduce API traffic while serving international users.

One-to-Many Exchange Rates

Scale Multi-Currency Pricing Without Scaling API Requests

International cryptocurrency applications often need the same asset priced across dozens of currencies. CoinAPI's One-to-Many Exchange Rates API removes the overhead of individual requests by delivering multiple exchange rates in a single response.

From portfolio dashboards and treasury systems to payment platforms and global pricing tools, developers can build faster, simpler, and more efficient applications with standardized multi-currency exchange rates.