Backup Storage Estimator
How much space will your backups actually take? It depends on how much data you protect, how well it compresses, and how many versions you keep. Estimate it here, then see what that would cost on cheap cloud storage.
Every version is a full compressed copy, so kept versions multiply the size. B2 storage estimated at $0.006/GB-month — compare providers.
A rough model. Real backup size depends on your exact files and how well they compress. BackupKit keeps full versioned archives rather than incremental ones, so each kept version costs a whole compressed copy — this estimate assumes exactly that.
How to think about retention
More versions means more recovery points — and more storage. A common balance is keeping 2–4 weeks of daily versions plus a few monthly ones. BackupKit lets you set retention by age (keep 30 days) or by count (keep the last 10 versions), so you can tune the storage/safety trade-off per job.