I-Calculator ye-Horsepower
Bala amandla enjini ye horsepower ukusuka kwi-torque ne-RPM, okanye uqikelele isantya sokuphazamisa se-quarter-mile.
Iinketho ze projekti
Malunga nale Calculator
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 ebuza rhoqo
Kutheni i-5252 ikhona kwifomula ye horsepower?
I-horsepower ichazwa njenge-33,000 ft-lb ngomzuzu, kwaye ujikelezo olunye lususa ii-2π radians. Ukudibanisa iziqwengana eziqhubekayo kunika i-HP = i-torque × RPM ÷ 5252, oko kukuthi i-horsepower kunye ne-torque curves zisoloko zidibana kwi-5252 RPM kwi-dyno chart.
Uyiqikelela njani amandla e horsepower ukusuka kwi-quarter mile?
Ifomula kaRoger Huntington idibanisa uxinzelelo lwesikhephe kunye nobunzima besixhobo: uxinzelelo lwesikhephe ≈ 234 × (hp/ubunzima)^⅓ mph. I-calculator iguqula uxinzelelo lwesikhephe kunye nexesha elidlulayo ukusuka kumandla akho nobunzima, umqondiso onzima ongaziboni uxinzelelo kunye nezixhobo zomoya.
Ingaba i-watts ezili-1000 zinamandla aphezulu?
Imoto enye ye-mechanical horsepower imalunga ne-745.7 watts, ngoko 300 hp imalunga ne-224 kW. I-calculator ibonisa i-kilowatt elinganayo kunye nemoto enye ye-mechanical horsepower.
Kutheni i-torque efanayo inika amandla ahlukileyo e-horsepower kwi-RPM eyahlukileyo?
Kuba amandla ayintonga yexesha lojikelezo lwesantya. HP = intonga × RPM ÷ 5252, ngoko 300 lb-ft yenza malunga ne286 hp kwi5,000 RPM kodwa kuphela 143 hp kwi2,500 RPM -isizathu sokuba iinjini zijikelezwe zifike kumandla aphezulu.
Yintoni ukulingana okulungileyo komandla nobunzima kwimali ekhawulezayo yesiqendu semile?
Ukhawulezo lwesikhuseli lulinganiselwa nge-cube root ye-horsepower nge-pund, ngoko ubunzima bubalulekile njenge-power. Imalunga ne-0.1 hp nge-pund (350 hp, 3,500 lb imoto) ibeka ufutshane ne-110 mph izikhuseli; ukulahleka kobunzima kunceda kakhulu njengokudibanisa amandla.
Ndingalinganisa ixabiso le-horsepower ukusuka kwisantya sam sokuzikhusela?
Inkqubo yesiqendu semile iqhuba ifomula kaHuntington ukusuka kumandla nobunzima ukuya kwisantya sokuqhekeka kunye ne-ET. Ukuhamba ngenye indlela, lungisa ukungena kwesantya sekhephu de ukhawulezo lokuqhekeka olulindelekileyo luhambelane nelo lilinganiselwe - ukuba unamandla ekhephu kuqikelelwa okunzima.
Ingaba iinkwenkwezi zemali ezili-15 zichanekile?
Ziinkcukacha zebala lebhola. Ifomula kaHuntington ayibonisi ukutsala, ukuqhubela phambili, ukuqhubela phambili, indlela yokuqalisa kunye nokulahleka kwendlela yokuqhuba, ngoko ke imoto eyiyo ingabi neshumi elininzi lesibini. Zithiwe njengendlela, hayi njengento etshintshayo yokuhamba ngexesha.
API — sebenzisa le calculator ukusuka kwikhowudi
Nceda le khadi lemali njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo ezantsi njengeparameter yombuzo okanye i-JSON. Nantoni na oyenzayo isebenzisa okungagqibekanga okufanayo eli phepha ligqityiwe ngaphambili; iparameter engaziwayo yi 400, ayikho i zero ekhululekileyo. Funda i-API epheleleyo →
Incopho yesiphelo
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);Results are estimates for general guidance only, not financial, medical or tax advice.