Conversione Misure

Legenda
Common Mesurements
Easy Conversions
Temperature
Unità di lavoro ed energia
Unità di potenza
Unità di pressione
Unità di forza
Simboli di uso più frequente
Unità di Tempo
Unità di lunghezza
Unità elettriche e magnetiche
Unità di Massa

METRIC TO U.S. CONVERSIONS

U.S. TO METRIC CONVERSIONS

METRIC MEASURE	MULTIPLIED BY	EQUALS U.S. MEASURE
LENGTH
millimeter centimeter meters meters kilometers	x 0.0394 x 0.3937 x 3.2808 x 1.0936 x 0.6214	= inches = inches = feet = yards = miles
AREA
sq. cm. sq. meters sq. km. hectares	x 0.155 x 1.1960 x 0.3861 x 2.4710	= sq. inches = sq. yards = sq. miles = acres
WEIGHT
grams kilograms tonnes	x 0.0353 x 2.2046 x 1.1	= ounces = pounds = short tons
VOLUME
milliliters liters liters liters cu. meters cu. meters	x 0.0338 x 2.1134 x 1.0567 x 0.2642 x 35.3145 x 1.3079	= fluid ounces = pints = quarts = gallons = cubic feet = cubic yards
TEMPERATURE
centigrade temperature	x 1.8 (+32)	= fahrenheit temperature

U.S. MEASURE	MULTIPLIED BY	EQUALS METRIC MEASURE
LENGTH
inches feet yards miles	x 2.54 x 30.48 x0.9144 x 1.6093	= centimeters = centimeters = meters = kilometers
AREA
sq. inches sq. feet sq.yards sq.miles acres	x 6.452 x 0.0929 x 0.8361 x 2.59 x 0.4047	= sq. cm = sq. meters = sq. meters = sq. kilometers = hectares
WEIGHT
ounces pounds short tons	x 28.3495 x 0.4536 x 0.9072	= grams = kilograms = tonnes
VOLUME
fluid ounces pints quarts gallons cubic feet cubic yards	x 29.574 x 0.4732 x 0.9463 x 3.7853 x 0.0283 x 0.7646	= milliliters = liters = liters = liters = cubic meters = cubic meters
TEMPERATURE
fahrenheit temperature	- 32 (/1.8)	= centigrade temperature

To calculate the approximate U.S. measure equivalent to a known metric measure, simply multiply the metric quantity by the conversion factor in the center column.
Example: 38 kilograms = 84 pounds, approximately (38 x 2.2046 = 83.78)

To calculate the approximate metric measure equivalent to a known U.S. quantity by the conversion factor in the center colum.
Example: 563 miles= 900 kilometers, approximately (563 x 1.6093 = 906.04)

COMMON MEASUREMENTS

LENGTH VOLUME
1 kilometer
1 meter
1 centimeter
1 mile
1 foot
1 inch = 0.62137 mile
= 3.2808 feet
= 0.3937 inches
= 1.6093 kilometers
= 0.3048 meter
= 2.54 centimeters 1 hectoliter = 100 liters = 0.1 cubic meters = 26.4172 gallons
1 liter = 100 centiliters = 1 cubic decimeter = 1.0567 quarts

1 gallon (U.S.) = 3.7853 liters
1 cubic inch = 16.3871 cubic centimeters
WEIGHT AREA
1 kilogram
1 gram
1 short ton
1 pound
1 ounces = 2.2046 pound
= 0.0353 ounces
= 907.1847 kilos
= 0.4536 kilos
= 28.3495 grams 1 square kilometer = 1 milion square meters = 0.3861 square miles
1 hectare = 10.000 square meters = 2.471 acres
1 square meter = 10.7639 square feet = 1550.003 square inches
1 square mile = 640 acres = 258.9988 hectares
1 square foot = 144 square inches = 929.0304 square centimeters

EASY CONVERSIONS

MEASUREMENT
SYMBOL
WHEN YOU KNOW
MULTIPLY BY
TO FIND
SYMBOL
LENGTH
mm
cm
m
m
km
in
ft
yd
millimeters
centimeters
meters
meters
kilometers
inches
feet
yards
0.03937
0.3937
3.3
1.1
0.6
2.54
30.48
0.9
inches
inches
feet
yards
centimeters
centimeters
meters
kilometers
in
in
ft
yd
cm
cm
m
km
AREA
cmq
mq
kmq
ha
in sq
ft sq
yd sq
ml sq
square centimeters
square meters
square kilometers
hectars (10.000 mq)
square inches
square feet
square yardes
square miles
0.16
1.2
0.4
2.5
6.5
0.09
0.8
2.6
square inches
square yards
square miles
acres
square centimeters
square meters
square meters
square kilometers
in sq
yd sq
mi sq
in sq
cmq
mq
mq
kmq
WEIGHT
g
kg
t
oz
lb
grams
kilograms
tonnes (1.000 kg)
ounces
poundes
0.035
2.2046
1.1
28.3495
0.45
ounces
pounds
short tons
grams
kilograms
oz
lb
tn
g
kg
VOLUME
ml
l
l
l
mc
mc
tsp
tbsp
fl oz
c
pt
qt
gal
ft cu
yd cu
milliliters
liters
liters
liters
cubic meters
cubic meters
teaspoons
tablespoons
fluid ounces
cups
pints
quarts
gallons
cubic feet
cubic yards
0.03
2.1
1.06
0.26
35.314
1.3
5
15
30
0.24
0.47
0.97
3.8
0.03
0.76
fluid onces
pints
quarts
gallons
cubic feet
cubic yards
millimeters
millimeters
millimeters
liters
liters
liters
liters
cubic meters
cubic meters
fl oz
pt
qt
gal
ft cu
ya cu
ml
ml
ml
1
l
l
l
mc
mc

TEMPERATURE

GRADI CELSIUS	GRADI REAUMUR	GRADI FAHRENHEIT	CONVERSIONI
70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 5 10 15 17.8 20 25 30 35 40	56 52 48 44 40 36 32 28 24 20 16 12 8 4 0 4 8 12 14.2 16 20 24 28 32	158 149 140 131 122 113 104 95 86 77 68 59 50 41 32 23 14 5 0 4 13 22 31 40	da °C a °R = °C x 4/5 da °C a °F = °C x 9/5 + 32 da °R a °C = °R x 5/4 da °R a °F = °R x 9/4 + 32 da °F a °C = °F - 32 x 5/9 da °F a °R = °F - 32 x 4/9

Unità di lavoro ed energia

simb.	J	erg	Kgm	wh	ev	Kcal
J	I	10^⁷	0,1019	0,278·10^{^-3}	6,24·10^¹⁸	0,239·10^{^-3}
erg	10^{^-7}	1	0,1019·10^{^-8}	0,278·10^{^-10}	6,24·10^¹¹	0,278·10^{^-10}
kgm	9,806	9,806·10^⁷	1	0,272·10^{^-2}	6,126·10^¹⁹	0,235·10^{^-2}
wh	3,6·10^³	3,6·10^¹⁰	3,668·10^²	1	2,247·10^²²	0,860
ev	0,160·10^{^-18}	0,160·10^{^-11}	0,163·10^{^-19}	0,445·10^{^-22}	1	0,382·10^{^-22}
Kcal	4,185·10^³	4,185·10^¹⁰	4,25·10^²	1,16	2,61·10^²²	1

Unità di potenza

simb	W	Erg/sec	Kgm/sec	C.V
W	1	10^⁷	1,02·10^{^-1}	1,36·10^{^-3}
Erg/sec	10^{^{^-7}}	1	1,02·10^{^-8}	1,36·10^{^-10}
Kgm/sec	9,81	9,81·10^⁷	1	1,33·10^{^-2}
C.V	736	736·10^⁹	75	1

Unità di pressione

denom.	simb.	P	µb	mm H2O	mm Hg
pascal	P	1	10	1,02·10^{^-1}	7,50·10^{^-3}
barfa	µp	0,1	1	1,02·10^{^-2}	7,50·10^{^-4}
millimetro d'acqua	mm H2O	9,80	98	1	7,25·10^{^-2}
torr	mm Hg	1,3332·10^{^²}	1,3332·10^³	12,598
bar	b	10^{^⁵}	10^⁶	102·10^⁴	7,50·10^{^-2}
atmosf. norm.	Kgp/cm2	9,8·10^⁴	9,8·10^⁵	10^⁴	7,35·10^{^-2}
atmosf. tecn.	atm	1,01325·10^⁵	1,01325·10^⁶	1,01335·10^⁴	7,60·10^²

denom.	simb.	b	Kgp/cm²	atm
pascal	P	10^{^{^-5}}	1,02·10^{^-5}	9,868·10^{^-6}
barfa	µp	10^{^{^-6}}	1,02·10^{^-6}	9,868·10^{^-7}
millimetro d'acqua	mm H2O	9,8·10^{^-5}	10^{^-4}	9,672·10^{^-5}
torr	mm Hg	1,01335·10^{^-3}	1,3598·10^{^-3}	1,3157·10^{^-3}
bar	b	1	1,02	0,9868
atmosf. norm.	Kgp/cm2	0,98	1	0,9672
atmosf. tecn.	atm	1,01325	1,0335	1

Unità di forza

simb	N	dyn	Kgp	gp
N	1	10^{^⁵}	1,02·10 ^-1	1,02 ·10^{^²}
dyn	10 ^{^{^-5}}	1	1,02·10^{^{^-6}}	1,02 ·10^{^{^-3}}
Kgp	9,81	9,81·10^{^{^-5}}	1	10^{^³}
gp	9,81·10^{^{^-3}}	9,81·10^{^{^-2}}	10^{^{^-3}}	1

Simboli di uso più frequente

sim	denomin.	denomin.
	uguale	equals
	diverso	not equal to
	ordine di grandezza	similar to, order of magnitude
	circa uguale	appoximately equals
	proporzionale	varies as, proportional to
	minore	less than
	maggiore	greater than
	minore o uguale	egual to or less than
	molto minore	much less then
	molto maggiore	much greater then
	incremento	increment of x
	infinito	infinity
	somma per K variabile da 1 an	summation of...., over k from 1
	perpendicolare	perpendicular to
	parallelo	parallel to
	prodotto vettoriale	vector product
	prodotto scalare	scalar product

Unità di tempo

Denom.	Secondo	Minuto	Ora	Giorno
Anno tropico	31.556.926	525.948,4	8765,8	365,24
Anno siderale	31.558.464	525.974,4	8766,24	365,26
Secondo	1	1,667·10 ^-2	2,778 ·10 ^-4	1,157·10 ^-5
Minuto	60	1	1,667·10 ^-2	6,944·10 ^-4
ora	3.600	60	1	4,167·10 ^-2
Giorno	86.400	1.440	24	1

Unità di Lunghezza

angstrom [A]	10^{^{^-10}} m	kilometro	10³ m; 10^⁵cm
micron [µ]	10^{^{^-6}} m	miglio antico	1481,4810 m
millimetro	10^{^{^-3}} m	miglio	1609,3426 m
centimetro	10^{^{^-2}} m	miglio marino	1853,182 m
pollice	25,4 mm	miglio ammiragliato	1855,16 m
piede	304,7997 mm	lega inglese	4828,0278 m
yarda inglese	914,3992 mm	quadrante	10^{^⁷} m
yarda americana	914,40183 mm	secondo-luce	299.776 Km
metro	10 mm; 10^{^{^-3}} Km	unità astronomica	149.691.081 Km
gòmena francese	194,904 m	anno luce	9,4606 . 10^{^¹²} Km
gòmena nuova	250 m	parsec	30,838 . 10^{^¹²} Km

Unità elettriche e magnetiche

Grandezza	Denominazione S.I.	Denominazione Sistema di Gauss
Carica elettrica q	coulomb
Intensità campo el. E	volt su metro
Induz. elettrica D	coulomb su metro quadrato
Potenziale V	volt
Intens. di corrente I	ohm
Resistenza R	farad
Capacità C	ampere su metro
Inten. campo mag. H	weber su metro quadrato	oersted
Induz. mag. B	weber	gauss
Flusso mag.	henry	maxwell
Coeff di autoinduz. L
S.I. - sistema internazionale µ_{_S.I.}- unità del sistema internazionale µ_{_g}- unità di Gauss

Unità di Massa

simbol	Kg	g	u.t.m.
Kg	1	10³	1,02·10 ^{^{^-1}}
g	10^{^-3}	1	1,02·10 ^{^{^-4}}
u.t.m	9,81	9,81·10³	1

Legenda