Free reference tables for ISO codes, time zones, dialing codes, HTTP status codes, and more. All data is public domain.
RefTables provides free, accurate reference tables sourced from public-domain datasets maintained by ISO, IANA, IETF, IUPAC, and other open international bodies. No registration required. No data collected. Just the facts.
Alpha-2, alpha-3, and numeric codes for every country. Searchable by name or code.
3-letter currency codes, numeric codes, and decimal digits for all world currencies.
Country calling codes (IDD) for every nation. Search by country or +code.
IANA time zone identifiers with UTC offsets for all regions. Searchable.
All 1xx, 2xx, 3xx, 4xx, and 5xx codes from RFC 9110 with plain-English descriptions.
The full ICAO/NATO spelling alphabet: Alpha, Bravo, Charlie ... with pronunciations.
All SI prefixes from yocto (10^-24) to yotta (10^24) with symbols and factors.
Periodic table data: symbol, atomic number, atomic mass, and category for each element.
Dots and dashes for every letter (A-Z) and digit (0-9). Search by character or pattern.
All data is sourced from public-domain and open-license standards: ISO 3166/4217 (country and currency codes), IANA Time Zone Database, IETF RFCs (HTTP status codes), IUPAC (chemical elements), BIPM (SI prefixes), NATO/ICAO (phonetic alphabet), and ITU (dialing codes).
Yes. All data published on RefTables is from public-domain sources. You are free to use the facts themselves (facts are not copyrightable). Always cite the original standard when using in professional or academic contexts.
Reference data (ISO codes, time zones, etc.) is updated when the relevant governing body publishes changes. ISO country codes change infrequently - typically fewer than five changes per year.
Every table on RefTables has a built-in live search box. Start typing a code, name, or value and matching rows appear instantly. You can also use your browser search (Ctrl+F or Cmd+F) to search within a page.