About AutosHype

AutosHype is an independent, advertising-supported site for people who drive, buy, or keep a car running — six free calculators and a set of reference guides, built around the numbers that come up most often: horsepower, tire size, depreciation, fuel economy, fuel cost, and auto-loan payments.

How the calculators are built

Every tool here runs on one named, checkable formula, not a hidden model or a lookup table of averages.

• The Horsepower Calculatoruses the standard relationship HP = torque × RPM ÷ 5252, converting in either direction and showing why a torque curve and a horsepower curve always cross at 5252 RPM.
• The Tire Size Calculator decodes a metric tire size — width, aspect ratio, rim diameter — into sidewall height, overall diameter, circumference, and revolutions per mile using standard tire geometry, then compares two sizes to estimate the speedometer error a swap would introduce.
• The Car Depreciation Calculator applies a declining-balance calculation — a starting price reduced by an annual percentage, compounded year over year — to produce a year-by-year value schedule and a total amount lost.
• The MPG Calculator divides miles driven by gallons used, then converts the result to litres per 100 km and kilometres per litre using standard metric conversion factors.
• The Fuel Cost Calculator multiplies a trip’s fuel use (distance ÷ MPG) by a pump price, then scales that per-trip figure up to an annual estimate from your yearly mileage.
• The Car Loan Calculator runs a standard loan-amortization formula against price, down payment, trade-in value, interest rate, term, and tax to produce a monthly payment, the amount financed, total interest, and total cost.

Where the inputs come from

None of these tools pull live data from a manufacturer, a dealer network, or a lender. The underlying formulas are public, standard conventions — the torque-to-horsepower relationship, ordinary tire geometry, compound-interest depreciation, and a standard loan-amortization formula — and the inputs (a torque figure, a tire size, a depreciation rate, an APR) are the numbers you supply, typically from a spec sheet, a dealer quote, or a loan offer. The math behind each result is worked out in full on the tool’s own page, not hidden behind the answer.

Guides, reviews, and the museum

Learn holds background reading on how these numbers actually work. The blog covers reviews and longer pieces. The Cars & Automotive Museumis a separate, browsable history of models, engines, and automakers — every entry, image, and fact there is drawn from Wikipedia and Wikimedia Commons, not written by us.

What this is — and isn’t

AutosHype is run independently and paid for by the ads on this site, not by a dealership, manufacturer, or lender, and it isn’t affiliated with any automaker, tire brand, or standards body. Every calculator result is an estimate for comparing options and planning ahead — not professional automotive, financial, or safety advice. Before you act on a number, especially for a loan or a tire-size swap, verify it against your owner’s manual, a qualified mechanic, or your lender.

Questions about a specific tool, or something that looks wrong? See Contact.