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Calculators

Fuel and EV calculators

Each tool solves one decision and states its unit system. The first release focuses on calculations that can be tested and maintained without inventing market prices or regulations.

No live prices

You enter the price you pay. These pages do not claim real-time fuel, electricity, toll or tax data.

Fuel and journeys

Estimate what a trip uses and costs, with the right units for each market.

1 tools

Fuel8 markets

Fuel cost calculator

Estimate trip fuel use, total cost and cost per mile or kilometre with UK, US, European, Swiss and Asia-Pacific units.

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Electric vehicles

Charging cost and running-cost comparisons that account for losses.

2 tools

EV8 markets

EV charging cost calculator

Calculate home or public charging cost from energy added, price per kWh, charging losses and session fees in eight markets.

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EV8 markets

Petrol or gas vs EV cost calculator

Compare annual running costs on the same distance basis across eight markets, with an optional purchase-price break-even estimate.

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Conversions

Unit bridges for fuel economy and vehicle power.

2 tools

UnitsUniversal

Fuel efficiency converter

Convert between L/100 km, MPG UK, MPG US and km/L, and between MPGe, mi/kWh and kWh/100 km.

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UnitsUniversal

kW ↔ PS ↔ hp converter

Convert kilowatts, metric horsepower (PS) and mechanical horsepower (hp/bhp) in every direction.

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Why there are not dozens of pages

One page can serve a cluster of equivalent searches: calculator, converter, formula, online and free. Creating separate URLs for each would be a doorway pattern, not a better experience. The same rule applies to number-specific examples, which are covered by the converter and its table.

Page last reviewed: . Formulas are covered by automated tests. Prices are inputs, not live data.