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Grandezza |
Unità |
Simbolo |
Conversione in unità SI |
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Lunghezza |
mil o thou |
1 mil |
= 25,4 µm |
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inch |
in |
1 in = 1000 mil |
= 2,54 cm |
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foot |
ft |
1 ft = 12 in |
= 0,3048 m |
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yard |
yd |
1 yd = 3 ft |
= 0,9144 m |
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chain |
ch |
1 ch = 22 yd |
= 20,1168 m |
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furlong |
fur |
1 fur = 10 ch |
= 201,168 m |
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mile (statute) |
mi |
1 mi = 8 fur |
= 1609,344 m |
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fathom |
fath |
1 fath = 6 ft |
= 1,8288 m |
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nautical mile (intern.) |
nmi |
1 nmi |
= 1852 m |
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Superficie |
square inch |
sq in |
1 sq in |
= 6,4516 cm2 |
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square foot |
sq ft |
1 sq ft = 144 sq in |
= 929,030 cm2 |
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square yard |
sq yd |
1 sq yd = 9 sq ft |
= 0,836127 m2 |
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rood |
1 moci = 1210 sci yd |
= 1011,71 m2 |
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acre |
1 acre = 4 roods |
= 4046,86 m2 |
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square mile (US) |
sq mi |
1 su mi = 640 acres |
= 2,589 99 km2 |
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Volume |
cubic inch |
cu in |
1 cu in |
= 16,3871 cm3 |
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cubic foot |
cu ft |
1 cu ft |
= 28,316 8 dm3 |
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cubic yard |
cu yd |
1 cu yd |
= 0,764555 m3 |
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Misura di capacità UK |
UK fluid ounce |
UK fl oz |
1 fl oz |
= 28,4131 cm3 |
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UK gill |
1 gill = 5 fl oz |
= 0,142065 dm3 |
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UK pint |
UK pt |
1 pt = 4 gills |
= 0,568261 dm3 |
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UK quart |
UK qt |
1 qt = 2 pt |
= 1,13652 dm3 |
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UK gallon |
UK gal |
1 gal = 4 qt |
= 4,54609 dm3 |
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UK bushel |
UK bu |
1 bu |
= 36,37 dm3 |
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Misura di capacità |
US minim |
min |
1 min |
= 0,061612 cm3 |
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US (fluidi) |
US fluid dram |
fl dr |
1 fl dr = 60 min |
= 3,69669 cm3 |
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US fluid ounce |
US fl oz |
1 fl oz = 8 fl dr |
= 29,5735 cm3 |
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US gill |
gi |
1 gi = 4 fl oz |
= 0,118294 dm3 |
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US liquid pint |
liq pt |
1 liq pt = 4 gi |
= 0,473176 dm3 |
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US liquid quart |
liq qt |
1 liq qt = 2 liq pt |
= 0,946353 dm3 |
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US gallon |
US gal |
1 gal = 4 liq qt |
= 3,78541 dm3 |
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US barrel (oil) |
bbl |
1 bbl = 42 gal |
= 158,987 dm3 |
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Misura di |
US dry pint |
dry pt |
1 dry pt |
= 0,550610 cm3 |
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capacità US |
US dry quart |
dry qt |
1 dry qt = 2 dry pt |
= 1,10122 dm3 |
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(merci secche) |
US peck |
pk |
1 pk = 8 dry qt |
= 8,80976 dm3 |
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US bushel |
bu |
1 bu = 4 pk |
= 35,2391 dm3 |
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US dry barrel |
bbl (dry) |
1 bbl =7056 cu in |
= 115,627 cm3 |
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Velocità |
mile per hour |
mi/h, mph |
1 mi/h |
= 0,44704 m/s |
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knot (internazionale) |
kn |
1 kn = 1 nmi/h |
= 0,514444 m/s |
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Massa |
grain |
gr |
1 gr |
= 0,064799 g |
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Sistema avoir |
dram |
dr |
1 dr = 27,34375 gr |
= 1,77185 g |
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dupois |
ounce |
oz |
1 oz = 16 dr |
= 28,3495 g |
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pound |
lb |
1 lb = 16 Oz |
= 0,453592 kg |
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stone (UK) |
1 stone = 14 lb |
= 6,35029 kg |
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quarter (UK) |
qr |
1 qr = 28 lb |
= 12,7006 kg |
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hundredweight (UK) |
cwt |
1 cwt = 112 lb |
= 50,8023 kg |
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(long) ton (UK) |
ton |
1 ton = 2240 lb |
= 1016,05 kg |
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short hundredweight (US) |
sh cwt |
1 sh cwt = 100 lb |
= 45,3592 kg |
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short ton (US) |
sh ton |
1 sh ton = 2000 lb |
= 907,185 kg |
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Sistema troy |
grain |
gr |
1 gr |
= 0,064799 g |
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pennyweight |
dwt |
1 dwt = 24 gr |
= 1,55517 g |
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troy ounce |
oz tr |
1 oz tr = 20 dwt |
= 31,1035 g |
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troy pound |
lb tr |
1 lb tr = 12 oz tr |
= 373,242 g |
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Forza |
poundal |
pdl |
1 pdl = 1 lb ft/s2 |
= 0,138255 N |
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pound-force |
lbf |
1 lbf |
= 4,44822 N |
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ounce force |
ozf |
1 ozf = 1/16 lbf |
= 0,273014 N |
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UK ton-force |
UK tonf |
1 UK tonf = 2240 lbf |
= 9964,02 N |
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US to-force |
US tonf |
I US tonf = 2000 lbf |
= 8896,44 N |
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kip (US) |
1 kip = 1000 lbf |
= 4448,22 N |
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Pressione |
poundal per square foot |
pdl/ft2 |
1 pdl/ft2 |
= 1,48816 Pa |
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pound-force per sq foot |
lbf/ft2 |
1 lbf/ft2 |
= 47,8803 Pa |
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pound-force per sq inch |
lbf/in2 , psi |
1 lbf/in2 |
= 6,89476 kPa |
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UK ton-force per sq foot |
UK tonf/ft2 |
1 UK tonf/ft2 |
= 1,073 . 105 Pa |
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UK ton-force per sq inch |
UK tonf/in2 |
1 UK tonf/in2 |
= 1,544 . 107 Pa |
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kip per sq in (US) |
ksi |
1 ksi |
= 6,895 . 106 Pa |
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Lavoro, energia, |
foot pound-force |
ft lbf |
1 ft lbf |
= 1,35582 J |
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quantità di calore |
British thermal unit |
Btu |
1 Btu |
= 1,05506 kJ |
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therm |
therm |
1 therm = 105 Btu |
= 105,506 MJ |
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Potenza |
British thermal unit/hour |
Btu/h |
1 Btu/h |
= 0,293071 W |
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horsepower |
hp |
1 hp = 550 ft lbf/s |
= 745,700 W |
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Portata in massa |
pound/hour |
lb/h |
1 lb/h |
= 0,125998 g/s |
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Portata volumica |
cubic foot/minute |
cu ft/min |
1 cu ft/min |
= 0,47195 dm3/s |
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UK gallon/minute |
UK gal/min |
1 UK gal/min |
= 75,768 cm3/s |
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US gallon/minute |
US gal/min |
1 US gal/min |
= 63,090 cm3/s |
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Temperatura |
grado Fahrenheit |
°F |
Temperatura [°C] = (Temperatura [°F] - 32) . 5/9 |
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differenza di temperatura : 1 °F = 5/9 °C = 5/9 K |
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