Free tools

Free DynamoDB Tools

Estimate cost, size your items, convert between JSON formats, and build expressions — instantly and entirely in your browser. No sign-up, no data leaves your machine.

DynamoDB Pricing Calculator

Estimate monthly DynamoDB cost across every AWS region — On-Demand vs Provisioned, side by side, with the free tier applied.

DynamoDB Item Size Calculator

Paste JSON to get the exact item size in bytes and the read/write capacity units it consumes.

DynamoDB JSON Converter

Convert plain JSON to DynamoDB-JSON (attribute-value format) and back, entirely in your browser.

DynamoDB Expression Builder

Build key conditions, filters, update expressions, and conditional writes visually — copy them as AWS SDK v3, CLI, boto3, or PartiQL.

DynamoDB Query Builder

Compose a complete Query or Scan request — index, key condition, filter, projection, limit, sort order, and pagination — and copy it as a runnable AWS SDK v3, CLI, or boto3 program.

DynamoDB Single-Table Design Tool

Turn entities and access patterns into a single-table key schema — PK/SK templates, an item-collection preview, GSI suggestions, and capacity cost hints.

DynamoDB TTL Converter

Convert a DynamoDB TTL value between a Unix epoch timestamp and a human date — auto-detects seconds vs milliseconds and flags the classic milliseconds mistake.

DynamoDB Reserved Words Checker

Check attribute names against DynamoDB’s full reserved-words list and get a ready-to-paste ExpressionAttributeNames alias map.

Prefer to read?

Our guides explain the concepts behind these tools, and the docs cover DynoTable itself.

Browse the guides Read the docs

Work with DynamoDB without the Console

A fast DynamoDB desktop client that runs the real SQL DynamoDB can’t — JOINs, GROUP BY, aggregates — with visual editing and an AI agent on your own Bedrock keys.

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Free 30-day trial, no credit card — then the Free plan with no time limit.