| horsepower-hour | 1 hp·h | 2 hp·h | 3 hp·h | 4 hp·h | 5 hp·h | 6 hp·h | 7 hp·h | 8 hp·h | 9 hp·h | 10 hp·h | 11 hp·h | 12 hp·h | 13 hp·h | 14 hp·h | 15 hp·h | 16 hp·h | 17 hp·h | 18 hp·h | 19 hp·h | 20 hp·h | 21 hp·h | 22 hp·h | 23 hp·h | 24 hp·h | 25 hp·h | 26 hp·h | 27 hp·h | 28 hp·h | 29 hp·h | 30 hp·h | 31 hp·h | 32 hp·h | 33 hp·h | 34 hp·h | 35 hp·h | 36 hp·h | 37 hp·h | 38 hp·h | 39 hp·h | 40 hp·h | 41 hp·h | 42 hp·h | 43 hp·h | 44 hp·h | 45 hp·h | 46 hp·h | 47 hp·h | 48 hp·h | 49 hp·h | 50 hp·h | 51 hp·h | 52 hp·h | 53 hp·h | 54 hp·h | 55 hp·h | 56 hp·h | 57 hp·h | 58 hp·h | 59 hp·h | 60 hp·h | 61 hp·h | 62 hp·h | 63 hp·h | 64 hp·h | 65 hp·h | 66 hp·h | 67 hp·h | 68 hp·h | 69 hp·h | 70 hp·h | 71 hp·h | 72 hp·h | 73 hp·h | 74 hp·h | 75 hp·h | 76 hp·h | 77 hp·h | 78 hp·h | 79 hp·h | 80 hp·h | 81 hp·h | 82 hp·h | 83 hp·h | 84 hp·h | 85 hp·h | 86 hp·h | 87 hp·h | 88 hp·h | 89 hp·h | 90 hp·h | 91 hp·h | 92 hp·h | 93 hp·h | 94 hp·h | 95 hp·h | 96 hp·h | 97 hp·h | 98 hp·h | 99 hp·h | 100 hp·h |
| quad | 2.5444335776439 × 10-12 quad | 5.0888671552877 × 10-12 quad | 7.6333007329316 × 10-12 quad | 1.0177734310575 × 10-11 quad | 1.2722167888219 × 10-11 quad | 1.5266601465863 × 10-11 quad | 1.7811035043507 × 10-11 quad | 2.0355468621151 × 10-11 quad | 2.2899902198795 × 10-11 quad | 2.5444335776439 × 10-11 quad | 2.7988769354082 × 10-11 quad | 3.0533202931726 × 10-11 quad | 3.307763650937 × 10-11 quad | 3.5622070087014 × 10-11 quad | 3.8166503664658 × 10-11 quad | 4.0710937242302 × 10-11 quad | 4.3255370819946 × 10-11 quad | 4.5799804397589 × 10-11 quad | 4.8344237975233 × 10-11 quad | 5.0888671552877 × 10-11 quad | 5.3433105130521 × 10-11 quad | 5.5977538708165 × 10-11 quad | 5.8521972285809 × 10-11 quad | 6.1066405863453 × 10-11 quad | 6.3610839441097 × 10-11 quad | 6.615527301874 × 10-11 quad | 6.8699706596384 × 10-11 quad | 7.1244140174028 × 10-11 quad | 7.3788573751672 × 10-11 quad | 7.6333007329316 × 10-11 quad | 7.887744090696 × 10-11 quad | 8.1421874484604 × 10-11 quad | 8.3966308062247 × 10-11 quad | 8.6510741639891 × 10-11 quad | 8.9055175217535 × 10-11 quad | 9.1599608795179 × 10-11 quad | 9.4144042372823 × 10-11 quad | 9.6688475950467 × 10-11 quad | 9.9232909528111 × 10-11 quad | 1.0177734310575 × 10-10 quad | 1.043217766834 × 10-10 quad | 1.0686621026104 × 10-10 quad | 1.0941064383869 × 10-10 quad | 1.1195507741633 × 10-10 quad | 1.1449951099397 × 10-10 quad | 1.1704394457162 × 10-10 quad | 1.1958837814926 × 10-10 quad | 1.2213281172691 × 10-10 quad | 1.2467724530455 × 10-10 quad | 1.2722167888219 × 10-10 quad | 1.2976611245984 × 10-10 quad | 1.3231054603748 × 10-10 quad | 1.3485497961512 × 10-10 quad | 1.3739941319277 × 10-10 quad | 1.3994384677041 × 10-10 quad | 1.4248828034806 × 10-10 quad | 1.450327139257 × 10-10 quad | 1.4757714750334 × 10-10 quad | 1.5012158108099 × 10-10 quad | 1.5266601465863 × 10-10 quad | 1.5521044823628 × 10-10 quad | 1.5775488181392 × 10-10 quad | 1.6029931539156 × 10-10 quad | 1.6284374896921 × 10-10 quad | 1.6538818254685 × 10-10 quad | 1.6793261612449 × 10-10 quad | 1.7047704970214 × 10-10 quad | 1.7302148327978 × 10-10 quad | 1.7556591685743 × 10-10 quad | 1.7811035043507 × 10-10 quad | 1.8065478401271 × 10-10 quad | 1.8319921759036 × 10-10 quad | 1.85743651168 × 10-10 quad | 1.8828808474565 × 10-10 quad | 1.9083251832329 × 10-10 quad | 1.9337695190093 × 10-10 quad | 1.9592138547858 × 10-10 quad | 1.9846581905622 × 10-10 quad | 2.0101025263386 × 10-10 quad | 2.0355468621151 × 10-10 quad | 2.0609911978915 × 10-10 quad | 2.086435533668 × 10-10 quad | 2.1118798694444 × 10-10 quad | 2.1373242052208 × 10-10 quad | 2.1627685409973 × 10-10 quad | 2.1882128767737 × 10-10 quad | 2.2136572125502 × 10-10 quad | 2.2391015483266 × 10-10 quad | 2.264545884103 × 10-10 quad | 2.2899902198795 × 10-10 quad | 2.3154345556559 × 10-10 quad | 2.3408788914324 × 10-10 quad | 2.3663232272088 × 10-10 quad | 2.3917675629852 × 10-10 quad | 2.4172118987617 × 10-10 quad | 2.4426562345381 × 10-10 quad | 2.4681005703145 × 10-10 quad | 2.493544906091 × 10-10 quad | 2.5189892418674 × 10-10 quad | 2.5444335776439 × 10-10 quad |
A horsepower-hour (hph) is an outdated unit of energy, not used in the SI system of units. The unit represents an amount of work a horse is supposed capable of delivering during an hour (1 (one) horsepower integrated over a time interval of an hour). Based on differences in the definition of what constitutes the 'power of a horse', a horsepower-hour differs slightly from the German "Pferdestärkenstunde" (PSh):
| 1 horsepower-hours = 2.5444335776439E-12 quads | 6 horsepower-hours = 1.5266601465863E-11 quads |
| 2 horsepower-hours = 5.0888671552877E-12 quads | 7 horsepower-hours = 1.7811035043507E-11 quads |
| 3 horsepower-hours = 7.6333007329316E-12 quads | 8 horsepower-hours = 2.0355468621151E-11 quads |
| 4 horsepower-hours = 1.0177734310575E-11 quads | 9 horsepower-hours = 2.2899902198795E-11 quads |
| 5 horsepower-hours = 1.2722167888219E-11 quads | 10 horsepower-hours = 2.5444335776439E-11 quads |
A quad is a unit of energy equal to 1015 (a short-scale quadrillion) BTU, or 1.055 × 1018 joules (1.055 exajoules or EJ) in SI units.
| 1 quads = 393014778922.23 horsepower-hours | 6 quads = 2358088673533.4 horsepower-hours |
| 2 quads = 786029557844.46 horsepower-hours | 7 quads = 2751103452455.6 horsepower-hours |
| 3 quads = 1179044336766.7 horsepower-hours | 8 quads = 3144118231377.8 horsepower-hours |
| 4 quads = 1572059115688.9 horsepower-hours | 9 quads = 3537133010300.1 horsepower-hours |
| 5 quads = 1965073894611.1 horsepower-hours | 10 quads = 3930147789222.3 horsepower-hours |
| 1 horsepower-hours = 2.5444335776439 × 10-12 quads |
| 1 quads = 393,014,778,922.23 horsepower-hours |