{
  "api_version": "0.2-draft",
  "exactness_note": "Every result carries an `exactness` level (exact | standard_definition | source_based | estimated | region_year_specific | user_assumption | context_required | unsupported) and non-exact results carry source_refs. Treat `value` as display text; `raw` is the full-precision decimal string. This API is a draft and may change before 1.0.",
  "result": {
    "input": {
      "value": "10",
      "unit_id": "liter",
      "unit_label": "L",
      "fuel_id": "diesel",
      "fuel_label": "diesel",
      "original_input": "10 L diesel"
    },
    "groups": [
      {
        "key": "energy",
        "title": "Energy",
        "results": [
          {
            "value": "356.6",
            "raw": "356.58",
            "unit_id": "megajoule",
            "unit_label": "MJ",
            "category": "energy",
            "exactness": "source_based",
            "formula": "10 L diesel × 9.905 kWh/L [LHV/NCV] = 99.05 kWh = 356.6 MJ",
            "basis": "lhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on LHV/NCV basis, 9.905 kWh/L",
                "value": "9.905",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "99.05",
            "raw": "99.05000000000000000000000000000000000001",
            "unit_id": "kilowatt_hour",
            "unit_label": "kWh",
            "category": "energy",
            "exactness": "source_based",
            "basis": "lhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on LHV/NCV basis, 9.905 kWh/L",
                "value": "9.905",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "0.3566",
            "raw": "0.35658",
            "unit_id": "gigajoule",
            "unit_label": "GJ",
            "category": "energy",
            "exactness": "source_based",
            "basis": "lhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on LHV/NCV basis, 9.905 kWh/L",
                "value": "9.905",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "338,000",
            "raw": "337972.6287613226471805588911591132404632",
            "unit_id": "btu",
            "unit_label": "BTU",
            "category": "energy",
            "exactness": "source_based",
            "basis": "lhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on LHV/NCV basis, 9.905 kWh/L",
                "value": "9.905",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "379.1",
            "raw": "379.116",
            "unit_id": "megajoule",
            "unit_label": "MJ",
            "category": "energy",
            "exactness": "source_based",
            "formula": "10 L diesel × 10.531 kWh/L [HHV/GCV — secondary] = 105.3 kWh = 379.1 MJ",
            "basis": "hhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on HHV/GCV basis, 10.531 kWh/L",
                "value": "10.531",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [
              {
                "kind": "basis_secondary",
                "severity": "info",
                "text": "HHV/GCV figure shown alongside the default."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "105.3",
            "raw": "105.31",
            "unit_id": "kilowatt_hour",
            "unit_label": "kWh",
            "category": "energy",
            "exactness": "source_based",
            "basis": "hhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on HHV/GCV basis, 10.531 kWh/L",
                "value": "10.531",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [
              {
                "kind": "basis_secondary",
                "severity": "info",
                "text": "HHV/GCV figure shown alongside the default."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "0.3791",
            "raw": "0.379116",
            "unit_id": "gigajoule",
            "unit_label": "GJ",
            "category": "energy",
            "exactness": "source_based",
            "basis": "hhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on HHV/GCV basis, 10.531 kWh/L",
                "value": "10.531",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [
              {
                "kind": "basis_secondary",
                "severity": "info",
                "text": "HHV/GCV figure shown alongside the default."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "359,300",
            "raw": "359332.6353847035636000470149214156017484",
            "unit_id": "btu",
            "unit_label": "BTU",
            "category": "energy",
            "exactness": "source_based",
            "basis": "hhv",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on HHV/GCV basis, 10.531 kWh/L",
                "value": "10.531",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [
              {
                "kind": "basis_secondary",
                "severity": "info",
                "text": "HHV/GCV figure shown alongside the default."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "mass",
        "title": "Mass",
        "results": [
          {
            "value": "8.324",
            "raw": "8.32361",
            "unit_id": "kilogram",
            "unit_label": "kg",
            "category": "mass",
            "exactness": "source_based",
            "formula": "10 L diesel × 832.361 kg/m³ [density] = 8.324 kg",
            "assumptions": [
              {
                "kind": "density",
                "text": "assumed diesel density 832.361 kg/m³ at 15 °C (fuel-properties basis)",
                "value": "832.361",
                "unit": "kg_per_m3",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "volume",
        "title": "Volume",
        "results": [
          {
            "value": "10,000",
            "raw": "10000",
            "unit_id": "milliliter",
            "unit_label": "mL",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": "10",
            "raw": "10",
            "unit_id": "liter",
            "unit_label": "L",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": "0.01",
            "raw": "0.01",
            "unit_id": "cubic_meter",
            "unit_label": "m³",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": "~2.64172",
            "raw": "2.641720523581484153798999216091625079593",
            "unit_id": "us_gallon",
            "unit_label": "US gal",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": "~2.19969",
            "raw": "2.199692482990877875273036829451242716268",
            "unit_id": "imperial_gallon",
            "unit_label": "imp gal",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": "~0.0628981",
            "raw": "0.06289810770432105128092855276408631141887",
            "unit_id": "barrel",
            "unit_label": "bbl",
            "category": "volume",
            "exactness": "exact",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          }
        ]
      },
      {
        "key": "emissions",
        "title": "Emissions",
        "results": [
          {
            "value": "~25.4",
            "raw": "25.3763",
            "unit_id": "kilogram_co2",
            "unit_label": "kg CO2",
            "category": "emissions",
            "exactness": "region_year_specific",
            "explanation": "metric: CO₂ · scope: direct combustion · region: UK · year: 2025 · source table: 'Fuels' sheet, 'Diesel (average biofuel blend)' — CO2 component",
            "formula": "10 L × 2.53763 kgCO2/L [CO₂, direct combustion, UK 2025] = ~25.4 kg CO2",
            "assumptions": [],
            "warnings": [
              {
                "kind": "representative_value",
                "severity": "info",
                "text": "Fuel properties are representative, sourced values — not a measurement of your specific fuel batch. Real densities, heating values and emission factors vary with grade, composition, temperature and source."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "~25.7",
            "raw": "25.7082",
            "unit_id": "kilogram_co2e",
            "unit_label": "kg CO2e",
            "category": "emissions",
            "exactness": "region_year_specific",
            "explanation": "metric: CO₂e · scope: direct combustion · region: UK · year: 2025 · source table: 'Fuels' sheet, 'Diesel (average biofuel blend)' — total kgCO2e/L",
            "formula": "10 L × 2.57082 kgCO2e/L [CO₂e, direct combustion, UK 2025] = ~25.7 kg CO2e",
            "assumptions": [],
            "warnings": [
              {
                "kind": "representative_value",
                "severity": "info",
                "text": "Fuel properties are representative, sourced values — not a measurement of your specific fuel batch. Real densities, heating values and emission factors vary with grade, composition, temperature and source."
              }
            ],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "energy_density",
        "title": "Energy Density",
        "results": [
          {
            "value": "42.84",
            "raw": "42.839",
            "unit_id": "",
            "unit_label": "MJ/kg",
            "category": "energy_density",
            "exactness": "source_based",
            "explanation": "LHV/NCV energy density of diesel.",
            "basis": "lhv",
            "assumptions": [],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": "9.905",
            "raw": "9.905",
            "unit_id": "",
            "unit_label": "kWh/L",
            "category": "energy_density",
            "exactness": "source_based",
            "explanation": "LHV/NCV energy density of diesel.",
            "basis": "lhv",
            "assumptions": [],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "assumptions",
        "title": "Assumptions",
        "results": [
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "assumptions",
            "exactness": "user_assumption",
            "explanation": "assumed diesel density 832.361 kg/m³ at 15 °C (fuel-properties basis)",
            "assumptions": [
              {
                "kind": "density",
                "text": "assumed diesel density 832.361 kg/m³ at 15 °C (fuel-properties basis)",
                "value": "832.361",
                "unit": "kg_per_m3",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "assumptions",
            "exactness": "user_assumption",
            "explanation": "energy on LHV/NCV basis, 9.905 kWh/L",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on LHV/NCV basis, 9.905 kWh/L",
                "value": "9.905",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "assumptions",
            "exactness": "user_assumption",
            "explanation": "energy on HHV/GCV basis, 10.531 kWh/L",
            "assumptions": [
              {
                "kind": "heating_value_basis",
                "text": "energy on HHV/GCV basis, 10.531 kWh/L",
                "value": "10.531",
                "unit": "kWh/L",
                "source_refs": [
                  "uk-desnz-ghg-2025"
                ]
              }
            ],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "warnings",
        "title": "Warnings",
        "results": [
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "warnings",
            "exactness": "unsupported",
            "explanation": "HHV/GCV figure shown alongside the default.",
            "assumptions": [],
            "warnings": [
              {
                "kind": "basis_secondary",
                "severity": "info",
                "text": "HHV/GCV figure shown alongside the default."
              }
            ],
            "source_refs": []
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "warnings",
            "exactness": "unsupported",
            "explanation": "Fuel properties are representative, sourced values — not a measurement of your specific fuel batch. Real densities, heating values and emission factors vary with grade, composition, temperature and source.",
            "assumptions": [],
            "warnings": [
              {
                "kind": "representative_value",
                "severity": "info",
                "text": "Fuel properties are representative, sourced values — not a measurement of your specific fuel batch. Real densities, heating values and emission factors vary with grade, composition, temperature and source."
              }
            ],
            "source_refs": []
          }
        ]
      },
      {
        "key": "sources",
        "title": "Sources",
        "results": [
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "uk-desnz-ghg-2025",
            "category": "sources",
            "exactness": "source_based",
            "explanation": "Source: uk-desnz-ghg-2025",
            "assumptions": [],
            "warnings": [],
            "source_refs": [
              "uk-desnz-ghg-2025"
            ]
          }
        ]
      },
      {
        "key": "formula",
        "title": "Formula / Calculation Path",
        "results": [
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "formula",
            "exactness": "exact",
            "explanation": "10 L diesel × 832.361 kg/m³ [density] = 8.324 kg",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "formula",
            "exactness": "exact",
            "explanation": "10 L diesel × 9.905 kWh/L [LHV/NCV] = 99.05 kWh = 356.6 MJ",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "formula",
            "exactness": "exact",
            "explanation": "10 L diesel × 10.531 kWh/L [HHV/GCV — secondary] = 105.3 kWh = 379.1 MJ",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "formula",
            "exactness": "exact",
            "explanation": "10 L × 2.53763 kgCO2/L [CO₂, direct combustion, UK 2025] = ~25.4 kg CO2",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          },
          {
            "value": null,
            "raw": null,
            "unit_id": "",
            "unit_label": "",
            "category": "formula",
            "exactness": "exact",
            "explanation": "10 L × 2.57082 kgCO2e/L [CO₂e, direct combustion, UK 2025] = ~25.7 kg CO2e",
            "assumptions": [],
            "warnings": [],
            "source_refs": []
          }
        ]
      }
    ],
    "assumptions": [
      {
        "kind": "density",
        "text": "assumed diesel density 832.361 kg/m³ at 15 °C (fuel-properties basis)",
        "value": "832.361",
        "unit": "kg_per_m3",
        "source_refs": [
          "uk-desnz-ghg-2025"
        ]
      },
      {
        "kind": "heating_value_basis",
        "text": "energy on LHV/NCV basis, 9.905 kWh/L",
        "value": "9.905",
        "unit": "kWh/L",
        "source_refs": [
          "uk-desnz-ghg-2025"
        ]
      },
      {
        "kind": "heating_value_basis",
        "text": "energy on HHV/GCV basis, 10.531 kWh/L",
        "value": "10.531",
        "unit": "kWh/L",
        "source_refs": [
          "uk-desnz-ghg-2025"
        ]
      }
    ],
    "warnings": [
      {
        "kind": "basis_secondary",
        "severity": "info",
        "text": "HHV/GCV figure shown alongside the default."
      },
      {
        "kind": "representative_value",
        "severity": "info",
        "text": "Fuel properties are representative, sourced values — not a measurement of your specific fuel batch. Real densities, heating values and emission factors vary with grade, composition, temperature and source."
      }
    ],
    "source_refs": [
      "uk-desnz-ghg-2025"
    ]
  }
}