Template:PrefixZero
From Rollo
001
Usage
{{PrefixZero|1}}}
Replacing "1" with any digit less than 10 returns a number with two 0s in front of it. E.g., "001".
Replacing "1" with any digit more than 9 but less than 100 a number with two 0s in front of it. E.g., "010".