Tarsnap Pricing Calculator

This tool calculates Tarsnap costs based on the official pricing model: 250 picodollars per byte-month for storage and 250 picodollars per byte for bandwidth. All calculations use the SI definition where 1 Gigabyte (GB) = 10⁹ bytes.

Custom Amount Calculator

Enter the exact amount of encoded data in bytes to see your estimated costs.

Encoded Data Amount: bytes

Standard Unit Cost Reference

This table shows the recurring storage costs for standard SI (decimal) units.

Unit Name	SI Multiplier (bytes)	Cost per Month	Cost per Year