Conversion Factors and Tables

 

Area
1 acre = 208.7 ft/side
1 acre = 2.47 hectare
1 sq mile = 640 acres
1 section = 1 sq mile
1 township = 36 sections
Energy
1 cal/kg = 3090 ft lb
1 cal/kg = 3.974 btu
1 btu = 0.298 w
1 btu = 44.25 F-Lh/M
1 btu = 777.7 ft lb
1 wh = 0.3412 btu
1 wh = 3.414 btu-hr
1fps = 1.35 w
1 kw = 1.34 hp
1 hp = 550 fps
1 hp = 746 w
1 kwh = 3,412 btu
1 hph = 2,544 btu
1 fr = 1 val/kg
1 cf N. Gas = 1,000 btu
amp = unit of current
Watt = Power + Time
Ohm = resist. of 1V @ 1 Amp
1 watt = 1 Jole/sec
1 watt = (1 amp @ 1V)
Watts = Amp x Volts
  Energy Boiler
1 BHP = 33,480 btu/hr
1 BHP  = 9,803 kw
1 M btu = 1 K lb
  steam/hr-app.
Hydro-H2O
1 hp = 100 gpm @ 40 ft
1 ft-gal = .00025 hp
  Flow
    Pipe
Flow of H2O in pipe
Sq-in of Pipe x Dist.(in.) to a 12" fall = GPM
    Weir
3.33 x L x 1.5 x H (in feet) = CFS (2.5 if Weir is wide)
  Hyd. Ram
Supp./GPM x 2 x H = GPM
     3 x Lift
(CFS x 499 = GPM)
Linear

 

Linear

 

 

1 in

=

25.4 mm

1 in

=

2.54 cm

1 hand

=

4 in

1 ft

=

0.305 m

1 yd

=

0.924 m

1 met

=

39.37 in

1 met

=

3.28 ft

1 rod

=

16.5 ft

1 kl

=

.621 mi

1 mi

=

1.61 km

1 mi

=

0.87 nmi.

1 nmi

=

1.15 mi (s)

 

 

 

Pressure

 

 

1 ft H2O

=

.433 psi

1 psi

=

2.30 ft H2O

1 atm

=

33.9 ft H2O

1 atm

=

29.92 in HG

1 atm ***

=

1 kg/sq cm

1 atm **

=

10 met H2O

1 atm

=

14.7 psi

1 in HG

=

13.59 in H2O

 

 

 

Velosity

 

 

88 ft/min

=

60 mph

1 f/s

=

0.6818 mph

1 mph

=

1.466 f/s

7/8/2009

=

.6213 m/h

1 mph

=

0.87 knots

1 kph

=

1.1507 mph

sound/air

=

1,115 f/s

sound/air

=

760 mph

sound/H20

=

4,800 f/s

sound/H20

=

3,271 mph

sound-1 mile in 4.7 sec

 

 

 

Volume

 

 

1 cc

=

0.061 cin

1 cin

=

16.39 cc

1 cord

=

128 cf

1 cf H20

=

7.48 gal

1 cm

=

1000 lit

1 cm

=

35.31 cf

 

 

 

   Fluid

 

 

oz F

=

1/16 pt

1 gal

=

128 fl oz

1 gal

=

231 cin

1 gal

=

3.78 lit

1 liter

=

1.056 qt

1 liter

=

61.03 cin

1 liter

=

0.264 gal

1 liter

=

1000 cc

1 bbl-oil

=

42 gal

1 British gal

=

1.201 U.S. gal

 

 

 

Weight

 

 

   Wt/Vol

 

 

1 cf H2O

=

62.4 lbs

1 gal H2O

=

8.337 lbs

1 lit H2O

=

1 kg

1 gal/UK

=

10 lbs

1 lb

=

0.453 kg

1 kg

=

2.205 lbs

 

 

 

1 long T.

=

2240 lbs

1 short T.

=

2000 lbs

1 met. T.

=

1000 kg

 

 

 

AL

=

0.097 lbs/cin

FE

=

0.284 lbs/cin

Lead

=

.41 lbs/cin

Mercury

=

.49 lbs/cin

Pine

=

36-G52 lbs/cf

Oak

=

44-G64 lbs/cf

Oil

=

7.1 lbs/G

Coal

=

60 lbs/cf

Brick

=

112 lbs/cf

Conc

=

137 lbs/cf

Gran

=

168 lbs/cf

C. Iron

=

448 lbs/cf

Steel

=

491 lbs/cf

 

=

0.28 lbs cin

Lead

=

711 lbs/cf

Aggregate

 

 

number 3

=

3-4 in

number 4

=

2-2.5 in

number 5

=

3/4 - 1 in

number 57

=

number 5

1 ton granite

=

2.2 AGG yards

1 yd S C G

=

2700 lbs

 

 

 

Math

 

 

Area Circ = 78.5% of a sg

        of

=

diameter

Area Circ

=

0.785 x D2

Area Circ

=

3.14 x R2

vol sph

=

4/3 π R3

  or

 

0.53 D3

Hyp.R.Isc.Tri = a side x 1.414 4.18 X R3

sin

=

opp/hyp

co sin

=

adj/hyp

tan

=

opp/adj

 

 

 

Giga = Billion

 

 

Mega = Million

 

 

kilo = 1000

 

 

hectre = 100

 

 

deca = 10

 

 

deci = 0.1

 

 

centi = 0.01

 

 

milli = 0.001

 

 

92 = Ma. Si.

 

 

 

 

 

Steel

 

 

   Deg. F.

 

 

 

 

 

Melts

 

2800

White

 

2600

White + Y

 

2400

Burns

 

2300

Lt. Y

 

 

Orange

 

1700

Cherry, Scales

 

 

Non Mag

 

1400

Red

 

1200

Vis. in Dark

 

1000

 

 

 

Grey

 

650

Blue

 

600

Purple

 

550

Br.

 

500

Yellow

 

450

Lt.Yellow

 

425

 

 

 

Oak Slppery

 

700

Oak Smokes

 

650

Oil Burns

 

600

Oil Boils

 

?

Oil Smokes

 

400

 

 

 

Steel-Composition

Steel

 

 

1 = C.

 

 

2 = Ni.

 

 

3 = Ch.Ni.

 

 

4 = Moly.

 

 

5 = Ch.

 

 

6 = Ch.V.

 

 

7 = Tun.

 

 

8 = N.C.M.

 

 

9 = Si.Ma.

 

 

Carbon

 

1X

hi Sul, Lo Pho

=

11

hi Sul,hi Pho

=

12

hi Man.C

=

15

Man

 

23

Ni 5%

 

25

Ni Ch

 

3X

(                             30)

res (3X)

=

30

Mo+C

 

40

Mo+Ch Ni

 

43

Mo Ni

 

46

Mo Ni

 

48

Lo Chr

 

51

M Lo Chr(3X)

 

52

H Lo Chr(3X)

 

51

Ch Van (3X)

 

6X

Ch 1%

 

61

Ch Ni Mo

 

86

Ch Ni Mo

 

87

Man Si

 

92

Man N C Mo

 

94

Ni Ch Mo

 

93,977

Category 2

 

 

( UK )/ U.S. Notes

 

 

(many UK/U.S. measures are based on 10 lbs/gal UK vs.
8.337 lbs - U.S. gal. 10/8.337 - 1.200 UK to 1 U.S. or
.833 U.S. to 1 UK )
Usually UK pints, qts., gals have same ratio as U.S. or

2 pts/qt, 4 qt/gal etc.

 

 

UK has no dry measure for oz. pts, qts, etc.

All lbs, miles, yards, feet, inches are equal in US & UK

 

 

( U.S. uses 5 + major systems of measure: U.S. , UK , Metric,
Nautical, Troy)

 

 

 

U.S. Conversion

 

 

1 lb

=

7000 grams

1 oz

=

16 drams

1 oz

=

437.5 grains

1 oz

=

28.35 grams

1 oz

=

.0625 lbs

1 gram

=

.564 drams av

1 gram

=

5 caruts met

1 gram

=

.0352 oz

1 gram

=

.643 penny

1 gram

=

15.43 grains av

1 fortnight

=

14 days

 

 

 

Volume-Dry

 

 

3 systems for substances in U.S. :

Dry, Fluid, Weight

 

 

(Dry to fluid usually 1.1636/1)

1 pt dry

=

33.600 cin

1 pt fl

=

28.875 cin

qt d

=

67.200

qt fl

=

57.75

  vs.

=

1.1636

1 peck

=

8 d qts

1 bushel

=

4 pecks

1 bushel

=

8 gal dry

1 bushel

=

9.31 gal fl

1 bushel

=

2150 cin

1 hogs head = 8.42 cf

 

 

 

Linear

 

 

1 palm

=

3 in

1 fathom

=

6 ft

1 chain

=

66 ft

1 chain

=

4 rods

1 furlong

=

660 ft

1 furlong

=

40 rods

1 furlong

=

10 chains

1 furlong

=

1/8 mi

1 cable

=

200 yds

1 league US

=

3 mi (s)

1 league Naut. = 1840 ft

 

 

 

Volume-Fluid

 

 

1 pint = 4 gil

=

16 fl oz

1 pint

=

4 gils

1 hogs head

=

63 gal

 

 

 

Volume UK Mixed

 

 

1 gal

=

10 lbs UK

4 gal

=

1 bucket UK

1 gal

=

.125 bushel/ UK

1 gal

=

.5 peck UK

1 gal

=

32 gils UK

1 gal

=

160 oz

1 gal

=

277.41 cin

1 gal

=

1.200 g U.S.

1 oz

=

.96 Fl. oz U.S.

1 oz

=

1/20 pt

 

 

 

General

 

 

Anvil Weight

 

 

First Digit x 114 lbs

=

sum of:

Second Digit x 28 lbs

Third Digit x 1 lb

 

 

100 Weight = sated weight

                  100

 

 

 

 

 

Solar

 

 

Earth Circ

 

 

   [360x60] or 24,830 mi = 21,600 NM

Earth Diameter = 6,890 NM or 7,926 mi
1 deg @ eq = 60 NM

1 min@eq

=

1 NM

1 sec@eq

=

 

Moon gravity = 0.16 Earth
Moon incline@eq = 6.65º
Moon incline of elliptic = 5.15º
Moon orbit of Earth = 27.3 days
   [av. 50 min later/day]

Earth incline@eq = 23.45º

If Earth diameter = 1 foot, then Moon diameter = 3.27 inches

 

 

@ 10 yards and Sun diameter = 109 feet @ 2.25 miles