Office Space CalculatorUse this tool to determine the estimated square footage needed when searching for office space for rent.Instructions:Fill in the textboxes in the column "# of Rooms required" to estimate the total rentable square feet (RSF)** that your office space requires. These calculations are an estimate and should only be used as a guideline.DescriptionSize# of RoomsDimensions USFUnit USFTotal USFCommon AreasReception AreaSmall - 2 people10' x 15'150Reception AreaMedium - 5 people20' x 20'400Conference RoomSmall - 6 people15' x15'225Conference RoomMedium-10 people15' x 20'300Conference RoomLarge - 14 people15' x 30'450Break AreaSmall - 6 people10' x 12'120Break AreaLarge - 12 people15' x 20'300Server RoomSmall4' x 6'24Server RoomMedium10' x 12'120Storage RoomSmall10' x 12'120Storage RoomLarge15' x 20'300Work Room (Copy, fax, mail)Small10' x 12'120Work Room (Copy, fax, mail)Large15' x 20'300USF Sub TotalOffices and CubiclesCEO/Director OfficeSmall15' x 15'225CEO/Director OfficeLarge15' x 20'300Private OfficesSmall10' x 12'120Private OfficesMedium10' x 15'150Office CubiclesSmall6' x 6'36Office CubiclesMedium6' x 8'48Office CubiclesLarge8' x 8'64USF Sub TotalTotal Square FeetX Circulation Factor35%Total Useable Square Feet (USF)X Common Area Factor15%Total Required Rentable Square Feet (RSF) ** Landlords charge Tenants based on the number of Rentable Square Feet ("RSF") leased. The RSF calculation starts as a total of the Usable Square Footage ("USF"), the dimensions of the actual spaces. To this USF is added a Circulation Factor, typically 25% - 35%, which is essentially the space allowing movement between the individual rooms/spaces. Landlords then add to this number a Common Area Factor ("CAF"), typically about 15% - 20%, to account for those areas shared by all tenants in a multi-tenant building (lobby, restrooms, shared hallways, etc.).