The firm has 26 offices in 15 countries and all but its Hong Kong, Japan, US and Spanish offices have converted.
A spokesperson for the firm said: "The conversion enables the firm to adopt a more appropriate business structure, but the change will have no impact on the high levels of service we provide to our clients, or on the identity of the people who provide it."
The firm's Spanish offices, which are located in Barcelona and Madrid, will convert to LLP later in the year while its offices in Hong Kong and Tokyo cannot take on LLP status due to regulatory restrictions. In the US, where the firm has office in New York and Washington, the firm already operates a US LLP.
As reported on TheLawyer.com, Hammonds' UK, Belgian and Spanish offices converted to LLP yesterday with its Berlin and Munich offices set to join on 5 May.
The London office of French firm Gide Loyrette Nouel also converted, as reported by The Lawyer 28 April.