{"uid":"cap_pHhWn0Cb71uF5gPqiat6m","slug":"fuel-economy-unit-converter-48b3ce66","name":"Fuel Economy Unit Converter","description":"Convert fuel economy between US mpg, UK mpg, km per litre and litres per 100 km, with optional trip fuel and cost.","url":"https://units-convert.x402tookit.com/fuel-economy?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["value","unit"],"properties":{"unit":{"type":"string","description":"mpg_us, mpg_uk, km_per_l or l_per_100km"},"value":{"type":"number","description":"The fuel-economy figure"},"distance_miles":{"type":"number","description":"Trip length in miles for fuel and cost"},"price_per_gallon_us":{"type":"number","description":"Fuel price per US gallon"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"mpgUk":{"type":["null","number"]},"mpgUs":{"type":["null","number"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"kmPerLiter":{"type":["null","number"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"tripLiters":{"type":["null","number"]},"tripCostUsd":{"type":["null","number"]},"tripGallonsUs":{"type":["null","number"]},"litersPer100Km":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Y8WztXxQm-PCE8eZGo7U1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a fuel economy value between US mpg, UK mpg, km/L, and L/100km, optionally calculating trip fuel usage and cost.","exampleAgentPrompt":"My car gets 32 US mpg — can you convert that to litres per 100 km and UK mpg, and also tell me how many litres of fuel I'd need for a 150-mile trip if gas costs $3.80 per gallon?","exampleUseCases":[{"title":"European road trip fuel planning","prompt":"I'm renting a car in Europe rated at 6 litres per 100 km — can you convert that to US mpg and UK mpg, and figure out how many litres I'd need for a 300-mile trip with gas at $1.60 per litre equivalent?"},{"title":"Comparing US and UK car specs","prompt":"A car listing says it does 55 mpg UK — what is that in US mpg and litres per 100 km so I can compare it to American models?"},{"title":"Road trip cost estimate","prompt":"My truck gets 18 mpg US and I'm driving 250 miles — how many gallons will I burn and what will it cost me if gas is $4.10 per gallon? Also show me the equivalent in litres per 100 km."}],"resultDescription":"Returns the input fuel economy value expressed in all four units (US mpg, UK mpg, km/L, L/100km), plus optionally the total trip fuel consumption in litres and US gallons and the estimated trip fuel cost in USD if distance and price were provided.","failureModes":["Missing required 'value' or 'unit' query parameters returns an error","Unsupported unit string (not one of mpg_us, mpg_uk, km_per_l, l_per_100km) returns an error","Non-numeric value for fuel economy or trip parameters returns a validation error","Negative or zero fuel economy value may return an error or unexpected result","Payment failure (x402) prevents the request from being fulfilled"],"whenToPreferThis":"Choose this endpoint when you need to programmatically convert a fuel economy figure across all four standard units in a single call, especially when you also want optional trip fuel and cost calculations bundled in. It is purpose-built for automotive/travel contexts and handles the mpg_us vs mpg_uk distinction (which many general unit converters conflate).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:19:45.856Z","isFirstParty":false,"canonicalSlug":"fuel-economy-unit-converter-48b3ce66"}