In the Indian number system, 100000 is written as 1,00,000 and called one lakh. In the international system, it is written as 100,000 and called one hundred thousand. The expression 1 Lakh can be written in words as One Lakh, and is mostly turned into short figure to 1L in daily use. This makes it easy to work with large values without having to write the full number. When expanded fully, 1 Lakh contains 5 zeros. In International number system, the value in standard notation is represented as 100,000. Lakh in Numbers: Use this tool to convert any amount of lakh to numbers and see how it is written. The number 1 lakh in numbers is 100000 . Therefore, if we want to find x lakh in number form, we want to find x copies of 100000 in number form. To do this, we simply multiply x by 100000.