Free tools to run the numbers on your subscriptions
Free calculators with every formula shown. Each starts from a worked example, and the estimate updates as you enter your own numbers. Nothing you enter is stored or sent.
01Calculators
Put a number on your subscriptions
Each calculator answers one question about your subscription business and shows how it gets there.
Cancellation Flow Calculator
See how much revenue a cancellation flow keeps when some subscribers stay.
Churn Calculator
See how much recurring revenue churn takes in a month and over a year.
Failed Payment Calculator for Subscriptions
See how much revenue failed payments cost you, and what a better recovery rate brings back.
Prepaid Subscription Calculator
Find out whether cash upfront beats paying per order, and at what cancellation rate.
Subscribe & Save Calculator
Find the subscription discount your margins can carry, and when it pays off.
Subscription Box Profit Calculator
See what each box earns, what the month earns and how many subscriptions cover your fixed costs.
Subscription Conversion Calculator
See how much extra revenue you get when one-time buyers subscribe.
Subscription Inventory Forecast Calculator
See how much stock your subscriptions need in the coming weeks, and when it runs out.
Subscription LTV Calculator
See what a subscriber is worth over their lifetime, and what you can spend to win one.
Subscription Revenue Forecast
See where your subscriptions and MRR are heading over the next 12 months.
Keep exploring
The terms behind the formulas
Playbooks
Retention tactics for the moments where subscribers leave.
Features
What Zubs does, one feature at a time, and why it matters for your subscribers.
Solutions
Subscription setups that fit your industry.
Customer stories
How subscription brands run their programs on Zubs.