Use this parser to convert a string in the named grammar into a structured value while making accepted syntax and failures explicit.

Date

Required string input.

Date format

Required string input.

Parse a calendar date in an explicit format into normalized date fields. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

ISO date

The resulting iso date returned as a string.

Year

The resulting year returned as an integer.

Month

The resulting month returned as an integer.

Day

The resulting day returned as an integer.

UTC timestamp

The resulting utc timestamp returned as an integer.

• Parsing rules depend on locale, radix, encoding, escaping, duplicate fields, whitespace, overflow, rounding, time zone, units, and ambiguity policy. Successful parsing does not validate business meaning or make untrusted input safe.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Reject trailing or ambiguous content, preserve the original input, schema-validate the parsed value, and test malformed, boundary, and adversarial cases.

• Currency Parser

  Parse a currency amount using an explicit currency code and number format.

• Percentage Parser

  Parse percentage text into its normalized decimal value.

• Cache-Control Header Parser

  Tokenize an RFC 9111 Cache-Control header into a record of directives; valueless flags become true and numeric values become numbers.