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IMPERIAL

 

Length Area Capacity Weight
1 mile = 1760 yards
1 mile = 8 furlong
1 furlong = 10 chains
1 chain = 4 rods
1 rod = 5 1/2 yards
1 yard = 3 feet
1 foot = 12 inches		 1 sq. mile = 640 acres
1 acre = 4840 sq. yard
1 sq. yard = 9 sq. feet
1 sq. foot = 144 sq. inches		 1 gal. = 4 quarts
1 quart = 2 pints
1 pint = 4 gills
1 pint = 34.6774 inchs3
1 gill = 5 fl. oz.
1 fl. oz. = 8 fl. drachms
1 US gal = 0.8327 gal
1 US pint = 0.8327 pint
1 US pint = 16 fl. oz.
1 yard3 = 27 feet3
1 foot3 = 1728 inches3		 1 ton = 20 cwt
1 ton = 2240 lb.
1 ton = 1.12 US ton
1 cwt = 4 quarters
1 quarter = 2 stone.
1 stone = 14 lb.
1 lb. = 16 oz.
1 oz. = 16 drams
1 oz. = 437.5 grains
1 US ton = 2000 lb.

METRIC

 

Length Area Capacity Weight

 
1 km = 10 hm
1 km = 1000 m
1 hm = 100 m
1 m = 10 dm
1 dm = 10 cm
1 cm = 10 mm
 1 km2 = 100 hectares
1 hectare = 100 ares
1 are = 100 m2
1 m2 = 100 dm2
1 dm2 = 100 cm2
1 cm2 = 100 mm2		 1 m3 = 1000 litres
1 litre = 1 dm3
1 litre = 1000 cc
1 litre = 1000 ml		 1 tonne = 1000 kg
1 kg = 1000 g
1 g = 1000 mg

IMPERIAL to METRIC

 

Length Area Capacity Weight

 
1 mile = 1.609 km
1 yard = 0.9144 m
1 foot = 0.3048 m
1 inch = 25.4 mm		 1 sq. mile = 2.59 km2
1 acre = 0.4047 hectares
1 acre = 4046.86 m2
1 sq. yard = 0.8361 m2
1 sq. foot = 0.0929 m2
1 sq. inch = 645.16 mm2		 1 gallon = 4.5461 litres
1 US gallon = 3.785 litres
1 pint = 0.5683 litres
1 cu. inch = 16.3871 cm3		 1 ton = 1.016 tonnes
1 lb. = 0.4536 kg
1 oz. = 28.3495 g
1 US ton = 0.9072 tonnes

METRIC to IMPERIAL

 

Length Area Capacity Weight

 
1 km = 0.54 miles
1 m = 1.0936 yards
1 m = 3.2808 feet
1 mm = 0.0394 inches		 1 km2 = 0.3861 mile2
1 km2 = 247.105 acres
1 hectares = 2.4711 acres
1 m2 = 10.7639 feet2
1 mm2 = 0.0016 inches2		 1 litre = 0.22 gal.
1litre = 0.2642 US gal.
1 litre = 1.7598 pint
1 m3 = 219.969 gal.
1 m3 = 35.3147 feet3		 1 tonne = 0.9842 ton
1 tonne = 1.1023 US ton
1 kg = 2.2046 lb.
1 kg = 35.274 oz.

TEMPERATURE

 

deg. C to deg. F deg. F to deg. C

 
deg. C x 9/5 + 32 = deg. F (deg. F - 32) x 5/9 = deg. C
 

 

 

SAE to Metric Conversion.

 

inch

inch

mm

1/64

0.016

0.397

1/32

0.031

0.794

3/64

0.047

1.191

1/16

0.063

1.588

5/64

0.078

1.984

3/32

0.094

2.381

7/64

0.109

2.778

1/8

0.125

3.175

9/64

0.141

3.572

5/32

0.156

3.969

11/64

0.172

4.366

3/16

0.188

4.763

13/64

0.203

5.159

7/32

0.219

5.556

15/64

0.234

5.953

1/4

0.250

6.350

17/64

0.266

6.747

9/32

0.281

7.144

19/64

0.297

7.541

5/16

0.313

7.938

21/64

0.328

8.334

11/32

0.344

8.731

23/64

0.359

9.128

3/8

0.375

9.525

25/64

0.391

9.922

13/32

0.406

10.319

27/64

0.422

10.716

7/16

0.438

11.113

29/64

0.453

11.509

15/32

0.469

11.906

31/64

0.484

12.303

1/2

0.500

12.700

33/64

0.516

13.097

17/32

0.531

13.494

35/64

0.547

13.891

9/16

0.563

14.288

37/64

0.578

14.684

19/32

0.594

15.081

39/64

0.609

15.478

5/8

0.625

15.875

41/64

0.641

16.272

21/32

0.656

16.669

43/64

0.672

17.066

11/16

0.688

17.463

45/64

0.703

17.859

23/32

0.719

18.256

47/64

0.734

18.653

3/4

0.750

19.050

49/64

0.766

19.447

25/32

0.781

19.844

51/64

0.797

20.241

13/16

0.813

20.638

53/64

0.828

21.034

27/32

0.844

21.431

55/64

0.859

21.828

7/8

0.875

22.225

57/64

0.891

22.622

29/32

0.906

23.019

59/64

0.922

23.416

15/16

0.938

23.813

61/64

0.953

24.209

31/32

0.969

24.606

63/64

0.984

25.003

1

1.000

25.400

 

IN -- MM Conversion

The formulas below are to convert a IN dimension to MM and vice versa.

MM = inch x 25.4
  IN  = mm / 25.4

SFM -- RPM Conversion

The formulas below are to convert a Surface Feet Per Minute (SFM) speed to straight Revolutions per Minute (RPM) and vice versa. DIA is the DIAMETER of the work piece for a Lathe or Turning calculation or the TOOL DIAMETER when calculating for a milling machine.

SFM = ( RPM x DIA ) / 3.82
RPM = ( SFM x 3.82 ) / DIA

IPR -- IPM Conversion

The formulas below are to convert an Inch Per Revolution (IPR) speed to an Inch per Minute (IPM) and vice versa. You can use (1) as the number of teeth when calculating turning speeds.

IPM = ( # of teeth in the cutter x IPR ) x RPM
IPR = ( IPM / RPM ) / # of teeth in the cutter

 

For More Information Contact:

All American Security Fasteners
144B W. Walnut Fullerton, Calif. 92634-6280
Tel: 714-525-0608
FAX: 714-525-0628

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Last modified: April 24, 2003