> Source: https://tryordinary.com/tools

Free calculators

# Free calculators for ecommerce brands.

The numbers that decide where your next dollar goes: return on ad spend, what a customer costs and is worth, whether a test won, and what you keep. Each one shows its formula and a worked example.

- [01 / Calculator↗ ## ROAS calculator Return on ad spend from revenue and spend, in one step. Open calculator →](/tools/roas-calculator)
- [02 / Calculator↗ ## Break-even ROAS calculator The lowest ROAS that doesn't lose money, from your real costs. Open calculator →](/tools/break-even-roas-calculator)
- [03 / Calculator↗ ## CAC calculator What it costs to win one new customer, paid and fully loaded. Open calculator →](/tools/cac-calculator)
- [04 / Calculator↗ ## Customer lifetime value calculator LTV in revenue and gross profit, plus your LTV:CAC ratio. Open calculator →](/tools/customer-lifetime-value-calculator)
- [05 / Calculator↗ ## A/B test significance calculator Check whether a test result is real, or size a test before it starts. Open calculator →](/tools/statistical-significance-calculator)
- [06 / Calculator↗ ## Profit margin calculator Margin and markup from price and cost, or the price for a target margin. Open calculator →](/tools/profit-margin-calculator)

## Stop estimating. Measure it.

Ordinary computes ROAS, CAC, lifetime value, test results and margin from your real Shopify orders and ad spend.

[Connect your store](https://apps.shopify.com/ordinary-attribution-ab-testing)