Reverse a Number

Reversal is the simplest transformation a number can suffer: read it backward. 1234 flips to 4321, 120 flips to 021 carrying its fresh leading zero, and the reversal is the raw material of palindromes, puzzles and coding interviews - the check for "does it read the same both ways" is nothing but a reverse followed by a compare.

Reverse a Number flips the digits of any value exactly as typed. The sign stays out in front, decimals reverse around their point, and because digits are handled as text, a thousand-digit number reverses with nothing lost. Copy or download the flipped result in one click.

• Exact flip: The full digit order is reversed, keeping every character.
• Sign-safe: A leading plus or minus stays at the front of the result.
• Decimal aware: 12.34 reverses to 34.21 with the point in place.
• Text-exact: Any length reverses perfectly, with no float rounding.
• Visible zeros: Leading zeros in the output are shown, not stripped.
• Palindrome check: The tool reports whether the original was already symmetric.
• Copy or download: Export the flipped number for puzzles or code.
• Free and private: Everything runs locally; nothing is uploaded or stored.

1. Enter a number - with or without a sign, and optionally a decimal part.
2. Read the flipped result - digits reversed around the point.
3. Check the stats - digit count and palindrome flag below.
4. Copy or download the reversed number for your puzzle, code or label.

Example 1 - Plain flip. Enter 1234: 4321.

Example 2 - Leading zero. Enter 120: 021 - the zero survives the flip.

Example 3 - Negative. Enter -987: -789 - the minus stays put.

Example 4 - Decimal. Enter 12.34: 34.21 - the point stays, digits reverse.

Example 5 - Palindrome. Enter 12321: reverses to itself, flagged as already symmetric.

• Instant reversal: Any value flips its digits in a single click.
• Every digit kept: Text handling reverses zeros, signs and huge magnitudes exactly.
• Clean signs: Negatives reverse around their sign instead of breaking it.
• Useful stat: The palindrome check shows at a glance if the input is symmetric.
• One-click export: The flipped number copies or downloads directly.
• Private and free: All reversal stays in the browser; nothing is uploaded or logged.