About Torquely
What this site is
Torquely is a free collection of automotive calculators for tire fitment, gearing, horsepower, engine builds, and shop unit conversions. It exists for DIY mechanics, builders, and tuners who need a number before they order parts — not a social network, not a parts store, and not a manufacturer portal.
Every tool runs in your browser. We do not create an account for you, and we do not send your torque, tire size, or bore/stroke figures to a server to get a result. Each calculator page publishes the formula it uses so you can check the math against a dyno sheet or a workshop manual.
Why it exists
A lot of automotive calculators on the web still look and behave like they were built in 2003: broken on phones, light on explanation, and unclear about what the number actually means. Torquely is the opposite bet — mobile-first tools with enough context that you know when to trust the result and when to measure the car instead.
We would rather have fewer, useful pages than a farm of near-duplicate converters. The unit converter covers metric and imperial shop units in one place. Dedicated calculators exist where the job is more than a unit swap — tire diameter, axle gears, compression, injectors, and so on.
How the numbers are produced
Results are geometry and standard engineering relationships, not a black-box “AI estimate.” Horsepower uses the SAE lb·ft × RPM ÷ 5252 relationship. RPM at speed uses the classic mph × overall ratio × 336 ÷ tire diameter formula. Compression ratio is swept volume over clearance volume. Where a page uses a rule-of-thumb (quarter-mile ET, injector BSFC), the page says so and lists the limits.
Treat every output as a planning number. Real engines have converter slip, tire growth, manufacturing tolerance, and weather. If you are about to machine a block, order pistons, or set street-legal tire pressure, confirm against OEM specs and physical measurement.
Who publishes it
Torquely is an independent site, published from Australia, with no OEM or aftermarket affiliation. We are not a licensed workshop and we do not sell parts on these pages. Display advertising (when Google approves the site) is how the tools stay free.