I-Calculator ye-horsepower
Linganisa amandla enjini kusuka ku-torque ne-RPM, noma ubike ijubane lokucindezela le-quarter-mile.
Iziphetho zivuselelwa uma ubhala.
Malunga nale khadi
Horsepower measures the rate of doing work, and this horsepower calculator finds it two ways. In the first mode, engine power follows directly from torque and rotational speed: HP = torque (lb-ft) × RPM ÷ 5252. The magic number 5,252 comes from the definition of horsepower (33,000 ft-lb per minute) and the 2π radians in a revolution, and it is also the RPM at which the horsepower and torque curves always intersect on a dyno chart. The tool reports the metric equivalent too, using 1 hp = 0.7457 kW.
As a worked example, an engine making 300 lb-ft of torque at 5,000 RPM produces 300 × 5000 ÷ 5252 ≈ 286 hp, which is about 213 kW. Because power is torque times speed, the same 300 lb-ft makes far more horsepower at high RPM than at low — which is why high-revving engines chase big peak-power figures even with modest torque.
Switch to the quarter-mile mode to estimate drag-strip performance from power and vehicle weight using Roger Huntington’s classic empirical formulas: trap speed ≈ 234 × (hp / weight)^⅓ mph and elapsed time ≈ 5.825 × (weight / hp)^⅓ seconds. A 300 hp car weighing 3,500 lb comes out around 103 mph and a 13.2-second quarter mile. These are rough guides that ignore traction, aerodynamics and driver skill, but they are a quick sanity check for a build or a way to back out power from a known trap speed.
Imibuzo ebuzwa kaningi
Kungani 5252 kufomula ye horsepower?
I-horsepower icaciswa njenge-33,000 ft-lb ngomzuzu, futhi ushintsho olulodwa lususa ama-radians angama-2π. Ukuxhuma izimo eziqhubekayo kunikeza i-HP = i-torque × RPM ÷ 5252, okuwukuthi kungani i-horsepower ne-torque curves zihlala ziqhathaniswa ku-5252 RPM kwi-dyno chart.
Ungalinganisa kanjani amandla emoto kusuka ku-quarter mile?
Roger Huntington's formula ixhuma ukukhawulelwa isivinini kanye nobunzima amandla: ukukhawulelwa isivinini ≈ 234 × (hp / ubunzima) ^⅓ mph. I-calculator iguqula ukulinganisela isivinini isivinini kanye isikhathi esidlule kusuka amandla akho nobunzima, umhlahlandlela onzima ukuthi ukhohlwa ukunyakaza kanye aerodynamics.
Ingabe ama-watts angaba amaphi uma i-horsepower eyodwa ikhona?
I-horsepower eyodwa ye-mechanical ilingana ne-745.7 watts, ngakho-ke i-300 hp ilingana ne-224 kW. I-calculator ibonisa i-kilowatt elinganayo kanye ne-horsepower.
Kungani i-torque efanayo inikeza amandla ahlukene e-horsepower ku-RPM ehlukile?
HP = torque × RPM ÷ 5252, ngakho 300 lb-ft yenza mayelana 286 hp ku 5,000 RPM kodwa kuphela 143 hp ku 2,500 RPM - isizathu ama-engine revved ukufinyelela amandla ophezulu.
Yini amandla angcono okulingana nobunzima bemilenze emibili ehamba ngokushesha?
Ukushesha kokuqhuma kulinganiselwa nge-cube root ye-horsepower nge-pound, ngakho ubunzima bubalulekile njengoba amandla. Okungaphezu kuka-0.1 hp nge-pound (350 hp, 3,500 lb imoto) kukubeka ku-110 mph ukuqhuma; ukulahlekelwa ubunzima kusiza kakhulu njengokungeza amandla.
Ingabe ngizolinganisela amandla emoto kusuka ku-trap speed yami?
Imodi yengxenye yemile iqhuba ifomu leHuntington kusuka kumandla nobunzima ukuya kukhawulo we-trap ne-ET. Ukuhamba ngenye indlela, lungisa isingeniso se-horsepower kuze kube yilapho isantya esilindelekile se-trap sifana nesinye esilinganiselwe - ukuthi i-horsepower iyisilinganiso esincane.
Ingabe ukulinganiselwa kwengxenye yemile efanele?
Ifomula Huntington's ukukhohlwa ukunyakaza, aerodynamics, gearing, ukuqala indlela kanye driveline ukulahleka, ngakho imoto engokoqobo ingaba ezingu-10s eziningi sesibili off. Babhekane nabo njengendlela, hhayi umlingani we uhambo olulodwa.
API — sebenzisa le calculator kusuka kukhodi
Nquma le calculator njenge JSON evulekile yendawo yokuqeda - akukho isithonjana esidingekayo. Thumela amaxabiso endawo ngezansi njengezilungiselelo zombuzo noma i-JSON. Noma yini ongayishiya isebenzisa iphutha elifanayo elifakwe ngaphambili lekhasi; ipharamitha engaziwa yi-400, ayikho i-zero emnyama. Funda i-API egcwele →
Ingxenye yendawo
GET https://calculator.free/api/v1/horsepower/curl
curl "https://calculator.free/api/v1/horsepower/?torque=300&rpm=5000&hp=300&weight=3500&_mode=power"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/horsepower/?" + new URLSearchParams({
"torque": "300",
"rpm": "5000",
"hp": "300",
"weight": "3500",
"_mode": "power"
}));
const data = await r.json();
console.log(data.results);Izibalo ziyisilinganiso esisetshenziswa ukuqondisa kuphela, hhayi ukucebisa ngezimali, ukwelashwa noma ukukhokha.