Add Leading Zeros
Paste your numbers and pick a target length. Shorter values are zero-padded (left or right), longer ones stay as they are, and the minus sign always stays in front.
Target Length:
Decimals:
Separator:
Pad Position:
Recognition Options:
Calculation Result
Download CSV
| Original | Padded |
|---|
Introduction to the tool and how to use it
Zero-padding format turns numbers like 1, 42, 678 into 0001, 0042, 0678, making it easy to build sequential IDs, align digit lengths, generate SKUs, or prepare test data.
Note: numbers that already reach or exceed the target width stay unchanged and are never truncated; the minus sign always stays at the front.
Note: numbers that already reach or exceed the target width stay unchanged and are never truncated; the minus sign always stays at the front.
How to use
- Paste the numbers into the input box; commas, spaces, line breaks, or any symbol can separate them.
- Set the target digit width (how many digits the integer part should reach) and the padding side: padding on the left suits most numbering cases, while padding on the right stretches a number into a fixed-length code.
- Fill in the decimal places when you want a uniform decimal width (0 means keep as-is); when the Strip existing leading zeros option is checked, 007 first becomes 7 before padding.
- Click start; the text box on the right outputs the padded result line by line, and the table below pairs each original number with its padded result; CSV download is available.
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