Kitchen Unit & Volume-Weight Converter implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t7-009

Effect

Computation or source lookup only

Input and validation requirements

A zero-density table record produces an undefined mass-to-volume calculation, and an unqualified oz unit permits materially different weight-ounce and fluid-ounce results.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "ingredient": "water",
    "quantity": 1,
    "from_unit": "cup",
    "to_unit": "g"
  },
  "expected_outputs": {
    "quantity": 240,
    "unit": "g"
  },
  "reference_data": {
    "cup_to_mL": 240,
    "source_convention": "widely tabulated standard culinary US-cup value",
    "water_density_g_per_mL": 1,
    "density_source_convention": "widely tabulated standard culinary value; water approximated as 1 g/mL"
  },
  "working": "1 cup × 240 mL/cup = 240 mL.\nMass = volume × density = 240 mL × 1.000 g/mL = 240 g."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche7/tranche7-results.json