Engagement rate calculator
Instagram: divided by followers·TikTok and YouTube: divided by views·X: divided by impressions
Most calculators use one formula for every network
That is where the wrong numbers come from. Dividing TikTok interactions by followers produces rates above 100% on accounts that go viral, which is not a rate at all.
A rate is a comparison, not a score
It is worth something against your own posts over time, or against an account of similar size in the same field. Against an industry average built from a thousand unrelated accounts, it means very little.
Echoia does the rest: publishing to ten networks, every comment and message in one inbox. Free for three accounts.