Resources / tools
Models you can actually use.
Six small calculators turn open questions about scope, capacity and growth economics into explicit assumptions. They are planning tools, not forecasts.
Choose a model
Start with the constraint you need to understand.
Use the inputs you know, then vary the uncertain ones. Each calculator explains its method, exclusions and the decision it can support.
Build
Website scope
Compare the complexity of pages, integrations, bookings and migration.
Open resource ↗OperationsHotline revenue
Model gross call value from reader capacity and paid utilisation.
Open resource ↗GrowthGoogle Ads ROI
Test paid acquisition economics before you scale spend.
Open resource ↗PlatformMarketplace revenue
Separate booking value from the platform share.
Open resource ↗OperationsConsultation capacity
Estimate sessions your team can deliver under realistic occupancy.
Open resource ↗ContentContent production
Scope article volume, words and writing budget.
Open resource ↗