# IPv4 to IPv6 Convert IPv4 addresses to IPv6 addresses. Supports IPv4-mapped and IPv4-compatible formats. > Canonical page: https://elysiatools.com/en/tools/ipv4-to-ipv6 - **Category:** Network - **Keywords:** ipv4, ipv6, converter, network, ip address, transition, mapping ## Overview The IPv4 to IPv6 converter is a specialized network utility designed to translate standard 32-bit IPv4 addresses into their 128-bit IPv6 equivalents. It supports multiple industry-standard transition formats, including IPv4-mapped, IPv4-compatible, and NAT64, ensuring seamless compatibility for network configuration and migration tasks. ## Inputs - **IPv4 Addresses** (textarea): Enter IPv4 addresses, one per line: 192.168.1.1 8.8.8.8 127.0.0.1 - **Output Format** (select) - **Add Line Numbers** (checkbox): Number each conversion result - **Show Source Data** (checkbox): Display original IPv4 addresses in results ## When to use - When migrating network infrastructure from legacy IPv4 to modern IPv6 environments. - When configuring dual-stack network devices that require specific address mapping formats. - When generating NAT64 prefixes for translation services in isolated IPv6-only networks. ## How it works - Enter your IPv4 addresses into the input field, placing each address on a new line. - Select your preferred output format, such as IPv4-mapped or NAT64, from the dropdown menu. - Toggle optional settings like line numbering or source data display to customize your output. - Click the convert button to generate the formatted IPv6 addresses instantly. ## Use cases - Network administrators preparing firewall rules for dual-stack transitions. - Developers testing application compatibility in IPv6-only network environments. - System engineers mapping legacy server IPs into modern cloud-native network configurations. ## Frequently asked questions ### What is an IPv4-mapped address? An IPv4-mapped address is an IPv6 address that represents an IPv4 node, typically using the prefix ::ffff:0:0/96. ### Can I convert multiple IP addresses at once? Yes, you can paste a list of IPv4 addresses into the input area, and the tool will process them line by line. ### What is the difference between mapped and compatible formats? Mapped addresses (::ffff:0:0/96) are used for dual-stack nodes, while compatible addresses (::/96) are a legacy format for tunneling IPv4 over IPv6. ### Does this tool support NAT64 prefix generation? Yes, selecting the NAT64 format will apply the well-known 64:ff9b::/96 prefix to your provided IPv4 addresses. ### Is my data sent to a server? The conversion is performed efficiently, and no IP address data is stored or logged by the tool. ## Related tools - [CIDR Calculator](https://elysiatools.com/en/tools/cidr-calculator): Calculate network information from CIDR notation. Supports IPv4 and IPv6. - [Integer to IPv4](https://elysiatools.com/en/tools/integer-to-ipv4): Convert integers to IPv4 addresses. Supports batch conversion of multiple integers. - [Integer to IPv6](https://elysiatools.com/en/tools/integer-to-ipv6): Convert integers (128-bit) to IPv6 addresses. Supports batch conversion. - [IP Info](https://elysiatools.com/en/tools/ip-info): Get real information about IP addresses including location and ISP details using geolocation database - [IPv4 to Integer](https://elysiatools.com/en/tools/ipv4-to-integer): Convert IPv4 addresses to integers. Supports batch conversion of multiple addresses. - [IPv6 to Integer](https://elysiatools.com/en/tools/ipv6-to-integer): Convert IPv6 addresses to integers (128-bit). Supports batch conversion. - [MAC OUI Vendor Lookup](https://elysiatools.com/en/tools/mac-oui-vendor-lookup): Look up the manufacturer of a MAC address from the IEEE OUI database, or reverse-search a company name to list all its OUI blocks — fully offline - [NB-IoT LTE-M Cat-M1 CoAP LwM2M Cellular IoT Packet Analyzer](https://elysiatools.com/en/tools/nb-iot-lte-m-cat-m1-coap-lwm2m-cellular-iot-packet-analyzer): Decode hex captures from cellular IoT devices: CoAP headers/options (block-wise, Observe), LwM2M TLV object trees with registry names, SMS-DELIVER UDH port addressing unwrapping CoAP-over-SMS, link-format registrations and DTLS record summaries. ## Samples - [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion - [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion - [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion ## Related content - [Network Address Conversion and Evidence Preparation](https://elysiatools.com/en/hubs/network-convert): Validate addresses, convert IPv4 and IPv6 formats, normalize URL and webhook inputs, and package DNS, hosts, port, WHOIS, and packet evidence for review.