Instant, no-signup tools for founders, marketers and developers. Every calculation runs live in your browser — no email walls, no waiting, no data leaving your device.
Every tool here runs entirely in your browser and updates the instant you type. There are no signup walls, no "enter your email to see the result" pop-ups, and nothing you enter is sent to a server. Each page also includes a plain-English explanation of the formula, how to read the result, realistic benchmarks, and the common mistakes that produce misleading numbers — so you understand the math, not just the output.
The marketing and unit-economics calculators connect: your acquisition cost and lifetime value together give the LTV:CAC ratio that decides whether growth is sustainable; conversion rate and ad cost feed into that CAC; and ROI and break-even tell you whether the whole thing makes money. Start anywhere and follow the related links.