Amazon Keyspaces Pricing Calculator

On-demand charges for actual RRUs and WRUs and fits variable or uncertain traffic. Provisioned capacity charges hourly for configured RCUs and WCUs and fits predictable traffic. When auto scaling is enabled, use average billable provisioned capacity instead of estimating it from request volume.

AWS meters each 4 KB read chunk as one RRU or RCU with LOCAL_QUORUM, and half an RRU or RCU with LOCAL_ONE. LOCAL_ONE may return an older value, so the lower metering cost is also a consistency tradeoff.

Amazon Keyspaces bills a write in every Region of the multi-Region keyspace. This calculator derives or accepts the logical write units once, then applies each selected Region’s own WRU or WCU-hour rate. It does not multiply the primary Region price. A keyspace can span up to five Regions, but this calculator models a primary and one replica, so estimate a third or later Region separately and add the totals.

For the first three months after the first Keyspaces resource is created, one payer account can receive a monthly allowance of 30 million on-demand RRUs, 30 million on-demand WRUs, and 1 GB of storage. The calculator leaves this off unless you explicitly confirm eligibility.