This free AI automation ROI calculator turns a vague hunch that "we should automate this" into real numbers. Enter how much time a recurring task eats today (hours per week, how many people, the loaded hourly cost), how much of it an automation can take over, plus the one-time setup effort and the monthly tool cost, and it shows the time saved per month and year, the gross and net monthly saving, the steady-state annual saving, the payback period and the first-year ROI. Everything runs in your browser: no sign-up, no API key, nothing leaves your device. Use it to sanity-check an automation idea before you build it.
The tool
About this tool
How automation ROI is calculated
The maths is simpler than most spreadsheets make it look. First, work out the time the task costs today: hours per week times the number of people gives the total weekly hours, and the share you can automate tells you how many of those hours an automation removes. Multiply the saved hours by your loaded hourly cost to get the gross saving. Then subtract the running cost of the automation (the monthly tool or subscription fee) to get the net monthly saving. The calculator above converts weekly figures to monthly using 4.33 weeks per month, so the numbers line up with a real calendar rather than a tidy four-week approximation.
Payback period and first-year ROI
Two numbers decide whether an automation is worth building. The payback period is how many months it takes for the net monthly saving to recoup the one-time investment (the setup hours valued at your hourly cost, plus any extra setup cost). A payback under three to six months is usually an easy yes. First-year ROI compares the net benefit over twelve months against everything you put in that year (the one-time setup plus twelve months of tool cost), expressed as a percentage. A positive ROI means the automation pays for itself within the year; if the net monthly saving is negative, the tool flags that it does not pay back at all, which is just as useful to know early.
Use a loaded hourly cost, not a salary
The single biggest mistake people make is using a bare salary figure. The honest input is the fully loaded cost of an hour: salary plus payroll taxes, benefits, software, office and the opportunity cost of what that person could be doing instead. As a rough rule, the loaded cost is often 1.3 to 1.5 times the base hourly wage. Using the loaded figure keeps the saving believable and stops you from overstating the case. Be equally honest about the share you can automate: very few tasks go to 100 percent, because edge cases, exceptions and review still need a human. A realistic 60 to 80 percent usually beats an optimistic 100 percent that never materialises.
From estimate to a real automation
A strong ROI on paper is a starting point, not a finish line. The savings only show up if the automation is adopted, kept running and trusted, which is why the smartest move is to start with one painful, repetitive, rule-based task rather than a sprawling process. Once the numbers look good here, the next decision is how to build it: a no-code platform like n8n, Zapier or Make for simple connector workflows, or a custom script or agent for anything with real logic. Read our guide on AI automation for business to scope the first project, compare the main no-code platforms before you pick one, and treat this calculator as the quick gut-check you run before every automation you consider.