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

Percentage

Required string input.

Number format

Required string input.

Number without percent sign

Required string input.

Parse percentage text into its normalized decimal value. 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]

Decimal value

The resulting decimal value returned as a number.

• 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.

• Quantity with Unit Parser

  Parse a finite numeric value and preserve its attached unit without converting it.

• Date Parser

  Parse a calendar date in an explicit format into normalized date fields.

• Query String Parser

  Parse a URL query string into an object of decoded keys and string values (repeated keys keep the last value).