Contact Agitative

Agitative is a small, independent, ad-supported site — there is no support team standing by, but a real person reads what comes in to support@agitative.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the coffee-to-water ratio calculator, grind size guide, brew timer, extraction yield calculator, caffeine estimate calculator, or bloom timer— and the values you entered); a brewing tool you wish existed on the site; an out-of-date fact or broken link in the blog, learn section, or the Museum of Coffee; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. Agitative provides general brewing calculators and explanations, not a substitute for product instructions from your equipment’s manufacturer or personalised barista training.

Before writing in about a tool result, it can help to double-check the numbers you entered — a dose and water figure that got swapped, or a mistyped decimal, is the most common source of a surprising answer. If it still looks off after that, that’s exactly the kind of message worth sending.