Your calculated number usually comes back higher than you expected. That reaction is worth sitting with instead of dismissing.
Your instinct will be that nobody will pay it. Sometimes that is true, and it means something needs to change:
the market you serve, the kind of work you take, the results you can point to. But most of the time the instinct is just unfamiliarity. You have been anchored to your old salary, or to what someone in a Facebook group said they charge, and the new number feels wrong because it is new.
Here is how to move without blowing up your income.
Raise on new clients first. You do not have to announce a price change to everyone on Monday. Quote the new rate on the next proposal and watch what happens. If nobody blinks, you had room you were not using.
Move existing clients at a natural break. A contract renewal, the start of a new project, the turn of the year. Give a clear effective date, keep the explanation to a sentence or two, and do not apologize. Long justifications read as an
invitation to negotiate.
Stop quoting hourly where you can. Price the project or the outcome. Clients care about what they get, not how long you took, and hourly pricing punishes you for getting faster.
Use the number as your floor, not your ceiling. What you need to charge and what the work is worth to the client are two different questions. The calculator answers the first one. Your positioning answers the second.
Some clients will leave. Usually the ones who were taking the most time for the least money, and the gap they leave gets filled faster than you expect.