ecech.

Tools tagged #car

Every ecech. tool tagged car: 10 free calculators and utilities across Financial & Currency, Productivity & Units. No signup, runs in your browser.

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Auto Loan

The longer term buys a smaller payment with time spent owing more than the car is worth. That gap is only invisible until you have to sell.

Finance
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Car Depreciation

The same percentage applied to a shrinking number is front-loaded. It is usually the largest cost of owning a car and the only one with no bill attached.

Finance
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Displacement Calc

A millimetre of bore adds more capacity than a millimetre of stroke. And one cubic centimetre off the chamber moves compression from 10.5 to 10.68.

Converters
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EV Charging

A rated charger power is a peak, not an average, and charging losses mean you pay for energy the battery never receives.

Finance
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Gearing & RPM

Tyre circumference sits in the denominator of the same equation as the final drive, so a tyre change is a gearing change whether you meant it or not.

Converters
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Measured Economy

It estimates from injector timing rather than measuring. The pump measures — but one tank is noisy, because auto-shutoff never stops in the same place twice.

Converters
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Torque & Power

33,000 foot-pounds per minute divided by 2π is 5252.11. That is the whole reason the two curves meet — nothing about the engine.

Converters
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Towing & Payload

Four limits apply at once, and the advertised towing figure is rarely the one you hit first. Usually it is payload, and usually nobody checks.

Converters
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Tyre Pressure & Temp

32 psi set on a 20 °C day reads 28.8 at freezing. Nothing leaked — air pressure follows absolute temperature.

Converters
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Tyre Size Compare

45 in 225/45R17 means 45% of 225 mm. Change the width and the sidewall changes too — which is how a 'same size' tyre ends up 3% taller.

Converters

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