Data
Free tools from the Data group.

Format conversion
CSV to JSONConvert CSV to JSON format. Automatic parsing and formatting. Free, no registration.
JSON to CSVConvert JSON to CSV format. Automatic parsing and formatting. Free, no registration.
XML to JSONConvert XML to JSON format. Automatic parsing and formatting. Free, no registration.
JSON to XMLConvert JSON to XML format. Automatic parsing and formatting. Free, no registration.
YAML to JSONConvert YAML to JSON format. Automatic parsing and formatting. Free, no registration.
JSON to YAMLConvert JSON to YAML format. Automatic parsing and formatting. Free, no registration.
Markdown to HTMLConvert Markdown to HTML and check the result as a page in the preview.
HTML to MarkdownConvert HTML or a whole web page to Markdown with GFM tables for GitHub and Obsidian.
Data size
B to bitsConvert bytes to bits. Every byte has 8 bits, so 4 bytes are 32 bits.
B to KBConvert bytes to kilobytes and back. 1 KB is 1,024 bytes, with a formula and a conversion table.
bits to BConvert bits to bytes. A byte has 8 bits, so 64 bits are 8 bytes and 1 bit is 0.125 bytes.
EB to PBConvert exabytes to petabytes. 1 EB is 1,024 PB in binary or 1,000 PB in decimal.
EB to ZBConvert exabytes to zettabytes. 1,024 EB make 1 ZB in the binary standard and 1,000 EB in the decimal one.
GB to GiBConvert gigabytes to gibibytes. 1,000 GB is 931.32 GiB, which is why a 1 TB drive shows 931 GB in Windows.
GB to MBConvert gigabytes to megabytes and back. 1 GB is 1,024 MB, with a formula and a conversion table.
GB to TBConvert gigabytes to terabytes and back. 1 TB is 1,024 GB, with a formula and a conversion table.
GiB to GBConvert gibibytes to gigabytes. 1 GiB is exactly 1.073741824 GB, so 16 GiB of RAM equals 17.18 GB.
KB to BConvert kilobytes to bytes and back. 1 KB is 1,024 bytes, with a formula and a conversion table.
KB to MBConvert kilobytes to megabytes and back. 1 MB is 1,024 KB, with a formula and a conversion table.
MB to GBConvert megabytes to gigabytes and back. 1 GB is 1,024 MB, with a formula and a conversion table.
MB to KBConvert megabytes to kilobytes and back. 1 MB is 1,024 KB, with a formula and a conversion table.
PB to EBConvert petabytes to exabytes. 1,000 PB is 1 EB in decimal or 0.98 EB in binary.
PB to TBConvert petabytes to terabytes. 1 PB is 1,024 TB in the binary standard or 1,000 TB in the decimal one.
TB to GBConvert terabytes to gigabytes and back. 1 TB is 1,024 GB, with a formula and a conversion table.
TB to PBConvert terabytes to petabytes. A petabyte holds 1,024 TB in the binary standard or 1,000 TB in the decimal one.
TB to TiBConvert terabytes to tebibytes. A 4 TB drive holds 3.638 TiB, which is why Windows shows it as about 3.6 TB.
TiB to TBConvert tebibytes to terabytes. 1 TiB is exactly 1.099511627776 TB, or 9.95% more than a terabyte.
YB to ZBConvert yottabytes to zettabytes. 1 YB is 1,024 ZB in the binary standard or 1,000 ZB in the decimal one.
ZB to EBConvert zettabytes to exabytes. 1 ZB is 1,024 EB in the binary standard or 1,000 EB in the decimal one.
ZB to YBConvert zettabytes to yottabytes. 1,024 ZB make 1 YB in the binary standard and 1,000 ZB in the decimal one.
Transfer speed
Gbps to MbpsConvert gigabits per second to megabits per second. The tables cover rates from 0.1 to 100 Gbps and the rates of Ethernet ports and USB connectors.
Gbps to TbpsConvert gigabits per second to terabits per second. A table lists Ethernet rates from 1 Gbit/s to 1.6 Tbit/s with the standard behind each.
kbps to MbpsConvert kilobits per second to megabits per second. The tables cover values from 56 kbps upwards and the bitrates of music, video calls and streams.
MB/s to MbpsConvert megabytes per second to megabits per second. The tables cover 0.1 to 1,250 MB/s and the Ethernet port a given download speed needs.
Mbps to GbpsConvert megabits per second to gigabits per second. The tables cover rates from 50 to 30,000 Mbps and the line rates of GPON and XGS-PON fibre.
Mbps to kbpsConvert megabits per second to kilobits per second. The tables give connection speeds and the rates Netflix, YouTube and video calls ask for.
Mbps to MB/sConvert megabits per second to megabytes per second, in decimal or the way browsers show it. The tables cover 1 to 10,000 Mbps and Ethernet ports.
Pbps to TbpsConvert petabits per second to terabits per second. A table lists submarine cable capacities and laboratory records.
Tbps to GbpsConvert terabits per second to gigabits per second. A table gives how many 100, 400 and 800 Gbit/s ports add up to a link of a given size.
Tbps to PbpsConvert terabits per second to petabits per second. A table shows the capacity at which petabits become the easier unit.
Numbers & time
Unix to dateConvert a Unix timestamp in seconds or milliseconds to a date and time, in UTC or in your local time.
Date to UnixConvert a date and time to a Unix timestamp in seconds, in UTC or in your local time.
DEC to BINConvert decimal numbers to binary and vice versa. Instant results.
DEC to HEXConvert decimal numbers to hexadecimal and vice versa. Instant results.
Roman to numberTurn a Roman numeral or a Roman numeral date into regular numbers. The converter also reads the IIII form and letters with a bar over them.
Number to RomanWrite any number or date in Roman numerals, from 1 to 3,999,999. Numbers from 4,000 get a bar over the letters.