IP & Network
One value per line. Select the input format; every equivalent representation appears together.
Conversion stays in this browser; entered addresses are never queried.
Network byte order; unsigned integers. Address mode detects IPv4 or IPv6; numeric modes use the selected family.
100 nonempty lines · 65,536 UTF-16 units total · 256 per line. JSON includes invalid rows.
Input or options changed. Convert again before exporting.
Use the IP converter when a database stores an integer but a log shows a dotted or colon-separated address. Explicit format and address-family choices remove the guesswork: the number 1 can mean 0.0.0.1 or ::1. Compare both forms without changing the source records.
The IP converter calculates with exact integers. Decimal, hexadecimal and binary results describe the same network-order bits, even above JavaScript’s safe integer limit. JSON stores these values as strings, so another program can read the exported digits without rounding.
An expanded address has eight four-digit groups. The compressed result removes group-leading zeros and shortens the longest zero run, using the leftmost run on a tie. Both appear in the report; the original spelling remains available for comparison.
Address mode recognizes IPv4 and IPv6 text. For integer, hex or binary input, select both the format and the 32-bit or 128-bit family. The family control is inactive in address mode; it does not constrain mixed address batches.
Blank lines do not become entries, but later physical line numbers stay intact. One invalid line does not stop the rest. The first 50 rows are shown initially; Show more reveals the remainder while exports always retain every row.
Automatic conversion waits 350ms after an edit. Turn it off to use Convert or Ctrl/Cmd + Enter. Edits disable old exports immediately. Examples and Clear show a replacement preview; Undo restores the prior input and report together.
Four decimal octets map to an unsigned 32-bit value in network byte order. For example, 192.0.2.1 becomes 3221225985, not a negative signed integer. Reverse conversion uses the selected numeric format and rejects out-of-range values.
IPv6 accepts valid shortened and full forms, including a dotted IPv4 tail. Output is lowercase, and one zero group is never compressed on its own. The all-zero address becomes ::. The report also includes fixed-width hex and 128 binary digits.
IPv4 generates a ::ffff: mapped representation. An IPv6 value inside ::ffff:0:0/96 exposes its embedded IPv4; other IPv6 values do not. IP to binary and decimal conversion still work for ordinary IPv6, without inventing an IPv4 counterpart.
For dotted IPv4, each octet is a base-256 digit: a×16777216 + b×65536 + c×256 + d. Address mode displays that unsigned decimal result. To go back, choose Decimal and IPv4; 3221225985 reconstructs 192.0.2.1.
Yes. IPv6 is a 128-bit unsigned value. This tool uses BigInt throughout and exports decimal digits as a string. Keep that string intact when importing the JSON; converting it to a floating-point Number can lose precision.
IPv4 accepts 0 through 4294967295. IPv6 accepts 0 through 340282366920938463463374607431768211455. The selected family determines the limit, so small values can still be interpreted as IPv6.
Not in dotted IPv4 here. An octet must be 0 or start with a nonzero digit. Some older parsers interpret a leading zero as octal, which is precisely the ambiguity this strict validator avoids. Leading zeros in IPv6 hexadecimal groups are accepted.
Address conversion runs in this browser, with no lookup or request to the entered address. Copy and Download act only when you select them. A local syntax result does not report whether that address exists or responds.
Found an address representation we should examine?
The IP converter gives you one report for spelling, bits and exact values. Select the intended numeric family before comparing a stored integer with an address.