This calculator works out the true cost of a meeting by converting annual salaries into an hourly rate and multiplying by the number of people in the room. The optional employer cost toggle accounts for the fact that a £45,000 salary typically costs an organisation closer to £58,500 once you include employer National Insurance, pension contributions, and a share of office overhead. The weekly annualised figure is the one that tends to surprise people most — a one-hour team meeting that feels routine can easily represent £50,000 or more of organisational time each year.