How to use it
Start with the income you'd like to keep in a year, then be ruthless about the hours: not hours you're awake, hours you can actually bill. Add the costs that exist only because you work — software, a phone plan, childcare during work hours — and a tax percentage for your country. The slider adds a margin for everything you can't bill: proposals, emails, the week a child is sick.
How I use the number
When I quote ad-management work, I start from this rate and the hours I know a campaign takes, then round up. Clients rarely ask how you got to a number; they ask whether it's within budget. If it isn't, the answer is to cut scope, not the rate.
Read next
Pricing a whole project or a digital product from this rate is the Pricing Calculator. Working out which hours you actually have is the Time-Block Planner.