OpenBerth managed hosting calculator

Two interactive views for sizing a managed multi-tenant hosting business on cheap dedicated hardware.

Provider margin comparison

How many tenants fit on a box at a given RAM allocation, and what the margin looks like across providers.

RAM / tenant

512 MB

Price / tenant / mo

$15

Host RAM reserve

16 GB

Overhead / box / mo

$40

Best capacity

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Best profit / box

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Best margin

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Provider	Spec	Region	Cost	Tenants	Revenue	Profit	Margin	$/GB

Capacity = (RAM − reserve) / RAM-per-tenant, capped at 4× CPU threads. Prices are approximate list prices for bare-metal or dedicated boxes as of early 2026. Verify before committing.

12-month tiered build-out

Mix Hobby, Starter, and Pro plans on Hetzner boxes. Fleet auto-scales as utilization exceeds 85%.

New tenants / month

Monthly churn

Safety factor

70%

Tier mix (H / S / P)

Month 12 MRR

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Month 12 profit

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Year 1 total profit

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Fleet at M12

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Month	Tenants (H/S/P)	Fleet	Util	MRR	Costs	Profit	Margin

Hobby: 512MB / $12 · Starter: 1GB / $29 · Pro: 2GB / $59. Box 1 is a Hetzner AX102 (128GB · $130 + $40 overhead). Subsequent boxes are AX162 (256GB · $290 + $50 overhead). A new box is added when fleet utilization exceeds 85%. Starts with 8 tenants in month 1.