Cars & Travel
Tools for cars and travel: fuel cost and economy, trip time, tyre sizes, electric-vehicle charging and range, and engine and maintenance figures. Use them to compare options before a purchase or a long drive.
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- Fuel Cost Calculator Calculate trip fuel cost from distance, consumption and price per liter.
- 2-Stroke Fuel Mix Calculator Calculate how much 2-stroke oil to add to petrol for a given mix ratio (e.g. 50:1).
- Fuel Economy Calculator Calculate your fuel economy from the distance travelled and fuel used, as L/100km, km/L and MPG.
- Driving CO₂ Emissions Calculator Estimate the CO₂ emissions of a car trip from distance, fuel economy and fuel type.
- EV Charging Cost Calculator Calculate the energy and cost to charge an electric car between two charge levels.
- Fuel Savings Calculator Compare an old and a new vehicle by yearly distance and fuel consumption. The Fuel Savings Calculator shows the liters saved per year, the annual money saved, and the percentage reduction in consumption.
- EV Charging Time Calculator Estimate the time to charge an electric vehicle from the battery capacity, charger power and efficiency.
- EV vs Petrol Cost Calculator Compare the annual running cost of an electric car versus a petrol car and see your savings.
- MPG to L/100km Calculator Convert fuel economy between miles per gallon (US), litres per 100 km and km per litre.
- Coolant Mix Calculator Work out how much antifreeze concentrate and water to use for a target coolant concentration.
- Engine Compression Ratio Calculator Calculate an engine's compression ratio from bore, stroke and clearance volume.
- Fuel Tank Range Calculator Calculates driving range from tank size and fuel economy, in both miles and kilometers.
- Road Trip Time Calculator Calculate total road trip time from distance, average speed and rest stops: driving time plus the time spent at stops. Plan arrival times and breaks for any journey.
- Tire Size Comparison Calculator Compare two tire sizes by overall diameter and find the resulting speedometer error.
- Engine Displacement Calculator Calculate an engine's total displacement in cubic centimeters and liters from bore, stroke, and number of cylinders. Enter the bore and stroke in millimeters and the cylinder count to get total volume, displacement in liters, and per-cylinder volume.
- CO₂ from Fuel Calculator Estimates carbon-dioxide emissions from a volume of fuel burned using standard emission factors.
- EV vs Gas Cost Calculator Compares the yearly fuel cost of an electric vehicle against a gasoline car to show your potential savings.
- US to UK MPG Converter Convert fuel economy between US miles per gallon and imperial (UK) mpg, and show the equivalent litres per 100 km. US and UK gallons differ, so the figures are not the same.
- EV Range Calculator Estimates an electric vehicle's driving range from its battery capacity, efficiency, and usable battery percentage.
- 0-60 mph Time Calculator Estimates a vehicle's 0-60 mph time from power and weight, plus its quarter-mile time from Patrick Hale's formula.
- EV Home Charging Time Calculator Estimates how long it takes to charge an electric vehicle at home from the battery size, current and target state of charge, and the charger's voltage, amperage, and efficiency.
- Stopping Distance Calculator Calculate vehicle stopping distance — reaction distance plus braking distance — from speed, reaction time and road friction.
- Travel Vaccination Timeline Calculator Tells you how many weeks before a trip to get a travel vaccine and whether you still have enough lead time.
- Road Trip Fuel Cost Calculator Estimates the total fuel cost of a road trip from distance, vehicle fuel economy (mpg), and fuel price per gallon.
- Road Trip Driving Time Calculator Estimate total road-trip time from distance, average speed and rest stops, including time spent at each stop.
- Tire Pressure for Load Calculator Estimate the tire inflation pressure needed for a given load per tire, based on the tire's maximum load and maximum pressure rating, with a safety margin.
- Deadhead Cost Calculator Calculates the fuel and operating cost of deadhead (empty) truck miles driven without a paying load.
- Fuel Injector Size Calculator Calculates the fuel injector size in cc/min (and lb/hr) needed to support a target horsepower, given cylinder count, BSFC and maximum duty cycle.
- Ceramic Coating Coverage Calculator Estimates how much ceramic coating (in mL) you need based on your vehicle size class and the number of coats, plus the number of 30 mL bottles.
- Fuel Pump Flow Calculator Estimate the fuel pump flow your engine needs from target horsepower, BSFC and fuel density, in L/h, gal/h and lb/hr.
- Air-Fuel Ratio Calculator Computes the air-fuel ratio (AFR) from a lambda value and the stoichiometric ratio of the selected fuel, and reports whether the mixture is rich, stoichiometric, or lean.
- Fleet Idle Fuel Cost Calculator Estimates the daily and annual fuel cost wasted by engine idling across a vehicle fleet, plus total gallons burned per year.
- Speedometer Error Calculator Calculates your true speed and speedometer error after fitting tires of a different diameter, since the gauge still assumes the original size.
- Tire Size Calculator Enter a tire's section width (mm), aspect ratio (%), and rim diameter (inch) to calculate the sidewall height, overall diameter, rolling circumference, and the number of revolutions per kilometer. Useful for comparing tire sizes, checking speedometer error, and planning a plus-size fitment.
- Air Filter Replacement Interval Calculator Find how many miles remain before your engine air filter is due, plus how much of its service life is already used.
- Tire Wear Mileage Calculator Estimate the remaining mileage of your tires from how much tread has worn over the miles driven so far. Plan replacements before you reach the legal tread limit.
- Commute Cost Calculator Estimates your daily, weekly, and yearly commuting cost from round-trip distance, cost per mile, and days per week.
- Hotel Points Value Calculator Calculates the cents-per-point value of a hotel award redemption from the cash price, taxes and fees on the award, and points required, with a quick good/poor verdict.
- 0-100 km/h Time Calculator Estimate a car's 0-100 km/h acceleration time from engine power and curb weight.
- Alternator Load Calculator Compare your vehicle's total electrical load with the alternator's output capacity.
- Annual Fuel Cost Calculator Estimate your yearly and monthly fuel spend from annual distance, consumption and price.
- Battery CCA Requirement Calculator Estimate the cold cranking amps (CCA) your car battery needs from engine size, fuel type and climate.
- Brake Disc Minimum Thickness Calculator Remaining brake disc life from current, new and minimum thickness.
- Camping Trip Food Calculator Estimates how much food, water and budget you need for a camping trip based on group size, length and calorie targets.
- Carpool Cost Split Calculator Split total fuel cost evenly among riders and see each person’s share and savings.
- Carry-On Liquid Limit Calculator Checks your carry-on liquids against the TSA 3-1-1 rule: each container 100 mL or less and about 1000 mL total in one quart-size bag.
- Compression Ratio Calculator Engine compression ratio from swept and clearance volumes.
- Coolant Mix Freeze Protection Calculator Find the freeze protection temperature of an ethylene glycol antifreeze and water mix.
- Cost Per Mile to Own Calculator Work out the true cost per mile to own a car from total annual cost and miles driven.
- EV Range at Speed Calculator Estimate an electric car's range and driving time at a cruising speed from battery capacity and consumption.
- EV vs Petrol Cost per Mile Calculator Compare the cost per mile of an electric car and a petrol car and see how much you save each year.
- Fuel Cost Per Km Calculator Work out your fuel cost per kilometre from consumption (L/100 km) and fuel price.
- Fuel Cost Per Mile Calculator Calculate fuel cost per mile from your MPG and the price per gallon.
- Gas vs EV Savings Calculator Compare annual fuel costs and savings from switching a gas car to an EV.
- Mean Piston Speed Calculator Calculate the mean piston speed of an engine from its stroke length and RPM.
- Octane Mixing Calculator Find the resulting octane rating when mixing two fuels of different octane.
- Oil Change Cost Calculator Work out the total cost of a DIY oil change from oil capacity, price and filter.
- Packing Outfit Calculator Calculate how many outfits to pack for a trip from the number of days and outfits per day, with a couple of spares.
- Payload Capacity Calculator Work out remaining payload from GVWR, curb weight, passengers and cargo.
- Regenerative Braking Energy Calculator Estimates the kinetic energy a vehicle can recover when braking, given mass, speeds and recovery efficiency.