Guidelines and Limits - Amazon Translate

Guidelines and Limits

The following sections contain information about Amazon Translate guidelines and limits.

Supported AWS Regions

For a list of AWS Regions that support Amazon Translate, see the AWS Region Table or AWS Regions and Endpoints in the Amazon Web Services General Reference.


For more information about Amazon Translate compliance programs, see AWS Compliance, AWS Compliance Programs, and AWS Services in Scope by Compliance Program.


Amazon Translate scales to serve customer operational traffic. If you encounter sustained throttling, contact AWS Support.


To continuously improve the quality of its analysis models, Amazon Translate might store your data. To learn more, see the Amazon Translate FAQ.

You can request that we delete your data and that future data associated with your account isn't stored by contacting AWS Support. However, because deleting your data can also delete unique training data that is helpful in improving translation, doing so might reduce the quality of your translations.

Service Limits

Amazon Translate has the following service limitations.

Synchronous Real-Time Translation Limits
Description Limit
Character encoding UTF-8
Maximum document size (UTF-8 characters) 5,000 bytes
Asynchronous Batch Translation Limits
Description Limit
Character encoding UTF-8
Maximum number of characters per document 1,000,000
Maximum size per document 20 MB
Maximum size of translatable text in a single document 1 MB
Maximum number of documents in batch 1,000,000
Maximum size of total documents in batch 5 GB
Maximum number of concurrent batch translation jobs 10
Custom Terminology Limits
Description Limit
Maximum custom terminology file size 10 MB
Maximum number of custom terminology files per AWS account per AWS Region 100
Maximum number of target languages per custom terminology file 10
Maximum source and target text length per custom terminology term 200 bytes
Maximum number of terminology files per TranslateText or StartTextTranslationJob request. 1
Maximum number of concurrent create or update operations for parallel data resources 1
Parallel Data Limits
Description Limit
Maximum parallel data input file size 1 GB

Maximum number of source languages in a parallel data resource

Maximum size of a single segment or record in a parallel data input file 1000 bytes
Maximum number of parallel data resources per AWS account per AWS Region 1000
Transactions per second for the CreateParallelData API action 5
Transactions per second for the GetParallelData API action 10
Transactions per second for the ListParallelData API action 10
Transactions per second for the UpdateParallelData API action 5
Transactions per second for the DeleteParallelData API action 5