What is the mathematical formula for fuel cost?

Fuel cost ≈ (distance/km / 100) × fuel efficiency (L/100km) × price per liter (EUR/L). Example: 500 km × 6.5 L/100km × 1.85 EUR/L = 60.13 EUR, rounded to two decimal places.

Where do prices for real-time fuel come from?

Prices are aggregated from the Osservaprezzi API by MISE (Ministry of Economic Development, now MIMIT). Public endpoint: carburanti.mise.gov.it/ospuc_pub. Updated every 24 hours by operators. Backend cache: 1 hour.

How do I calculate CO2 emissions for a trip?

Emissions Factors EEA 2023: gasoline 2.31 kg CO2/L, diesel 2.68 kg CO2/L, LPG 1.51 kg CO2/L, methane 2.0 kg CO2/kg. Formula: CO2_kg = liters_consumed × emission_factor. Liters are derived from (distance / 100) × consumption.

Is routing precise? Which provider is used?

OSRM (Open Source Routing Machine) with car profile and OpenStreetMap data. Geocoding via Nominatim. Accuracy ±2-5% compared to Google Directions API. The calculator uses the default shortest time path, not shortest distance.

Can I integrate calculation into a REST API?

Yes. Calculates pure compute fuel cost based on distance, consumption, price and fuel type.

Difference between mixed consumption NEDC and WLTP?

NEDC (pre-2017) underestimates fuel consumption by 20-30% compared to real values. WLTP (2018+) is more realistic, with top speed up to 131 km/h vs 120 km/h NEDC. Always use the WLTP value from your vehicle's registration for accurate estimates.

Fuel Cost Calculator | Federico Calò

Optional smart features

Departure

I'm here

Region (Italy)

Fuel type

Travel details

Distance (miles/km)

Fuel consumption (L/100 km)Small cars (subcompact) 5-7 seats, compact and medium-sized vehicles up to 9 passengers, large family car or minivan.

Price per liter (£/L or €/L)Average gasoline price in Italy, 2024: around €1.85 per liter.

Insert distance, consumption and price to calculate the cost of travel.

Come utilizzare Calcolatore Costo Carburante

Seleziona regione e carburante (opzionale)

Scegli la tua regione italiana e il tipo di carburante per recuperare automaticamente il prezzo medio aggiornato dal dataset MISE Osservaprezzi Carburanti.

Calcola distanza automatica (opzionale)

Digita partenza e arrivo per ottenere la distanza stradale reale calcolata via OSRM (OpenStreetMap). In alternativa inserisci manualmente i km.

Imposta il consumo del veicolo

Inserisci il consumo in L/100km del tuo veicolo. Il libretto indica questo valore (default 7 L/100km è tipico di un'utilitaria).

Analizza costo + CO2

Il calcolatore mostra litri necessari, costo totale, costo per km e stima emissioni CO2 del viaggio.

Suggerimenti

Il consumo in autostrada è tipicamente 10-20% superiore rispetto al misto urbano per le velocità elevate.
Pneumatici sgonfi aumentano il consumo fino al 3%. Controlla la pressione mensilmente.
Guidando a 110 km/h invece di 130 km/h su autostrada si risparmia 15-20% di carburante.
I prezzi MISE sono medie regionali: nel tuo distributore possono variare ±10% dalla media.

Domande frequenti

Are fuel prices up-to-date?

Prices are from the MISE Osservaprezzi Carburanti dataset, updated daily at 8am. Our backend downloads and aggregates the CSV at 8:30am by region. Reference date visible below price.

How is distance calculated?

We use OSRM (Open Source Routing Machine) on OpenStreetMap data for real road routing (not linear distance). The address auto-complete uses Nominatim.

How is CO2 measured?

Emissions factors DEFRA 2023: petrol 2.31 kg CO2/L, diesel 2.68 kg/L, LPG 1.61 kg/L, methane 2.75 kg CO2/kg. Multiplied by litres consumed during journey.

Where can I find my vehicle's fuel consumption per 100 km?

Vehicle registration document or manufacturer's site. Real consumption varies with driving style, traffic and climate.

Does highway tolls calculation include?

No, the calculator does not include tolls. For highway trips, add toll costs manually to the total.

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