Determine Magnitude of a Number
Calculator for the magnitude of a very large or very small number. The order of magnitude indicates in which range of powers of ten a number lies. This results from the position of the first digit of a number greater than or equal to one, or the position of the first digit after the decimal point not equal to zero in the case of a number less than one. The number itself is irrelevant. A sign is ignored. Please enter a number, the magnitude of this number is displayed up to 65 digits, this number is called hundred vigintillion.
Examples: the number 123456789 is in the magnitude of hundred million, as is the number 987654321. 0.000000005 is in the magnitude of billionth.
To display not only the order of magnitude, but the exact name of large numbers, see Numerals Calculator.