GM Service Manual Online
For 1990-2009 cars only

Decimal and Metric Equivalents for Chevrolet Chevy P42 Commercial Chassis 1998

Refer to the following table for equivalent of fractions to decimals in English (inches), to metric (millimeters).

Fraction (in)

Decimal (in)

Metric (mm)

1/64

0.015625

0.39688

1/32

0.03125

0.79375

3/64

0.046875

1.19062

1/16

0.0625

1.5875

5/64

0.078125

1.98437

3/32

0.09375

2.38125

7/64

0.109375

2.77812

1/8

0.125

3.175

9/64

0.140625

3.57187

5/32

0.15625

3.96875

11/64

0.171875

4.36562

3/16

0.1875

4.7625

13/64

0.203125

5.15937

7/32

0.21875

5.55625

15/64

0.234375

5.95312

1/4

0.25

6.35

17/64

0.265625

6.74687

9/32

0.28125

7.14375

19/64

0.296875

7.54062

5/16

0.3125

7.9375

21/64

0.328125

8.33437

11/32

0.34375

8.73125

23/64

0.359375

9.12812

3/8

0.375

9.525

25/64

0.390625

9.92187

13/32

0.40625

10.31875

27/64

0.421875

10.71562

7/16

0.4375

11.1125

29/64

0.453125

11.50937

15/32

0.46875

11.90625

31/64

0.484375

12.30312

1/2

0.5

12.7

33/64

0.515625

13.09687

17/32

0.53125

13.49375

35/64

0.546875

13.89062

9/16

0.5625

14.2875

37/64

0.578125

14.68437

19/32

0.59375

15.08125

39/64

0.609375

15.47812

5/8

0.625

15.875

41/64

0.640625

16.27187

21/32

0.65625

16.66875

43/64

0.671875

17.06562

11/16

0.6875

17.4625

45/64

0.703125

17.85937

23/32

0.71875

18.25625

47/64

0.734375

18.65312

3/4

0.75

19.05

49/64

0.765625

19.44687

25/32

0.78125

19.84375

51/64

0.796875

20.24062

13/16

0.8125

20.6375

53/64

0.828125

21.03437

27/32

0.84375

21.43125

55/64

0.859375

21.82812

7/8

0.875

22.225

57/64

0.890625

22.62187

29/32

0.90625

23.01875

59/64

0.921875

23.41562

15/16

0.9375

23.8125

61/64

0.953125

24.20937

31/32

0.96875

24.60625

63/64

0.984375

25.00312

1

1.0

25.4

Fraction (in)

Decimal (in)

Metric (mm)

1/64

0.015625

0.39688

1/32

0.03125

0.79375

3/64

0.046875

1.19062

1/16

0.0625

1.5875

5/64

0.078125

1.98437

3/32

0.09375

2.38125

7/64

0.109375

2.77812

1/8

0.125

3.175

9/64

0.140625

3.57187

5/32

0.15625

3.96875

11/64

0.171875

4.36562

3/16

0.1875

4.7625

13/64

0.203125

5.15937

7/32

0.21875

5.55625

15/64

0.234375

5.95312

1/4

0.25

6.35

17/64

0.265625

6.74687

9/32

0.28125

7.14375

19/64

0.296875

7.54062

5/16

0.3125

7.9375

21/64

0.328125

8.33437

11/32

0.34375

8.73125

23/64

0.359375

9.12812

3/8

0.375

9.525

25/64

0.390625

9.92187

13/32

0.40625

10.31875

27/64

0.421875

10.71562

7/16

0.4375

11.1125

29/64

0.453125

11.50937

15/32

0.46875

11.90625

31/64

0.484375

12.30312

1/2

0.5

12.7

33/64

0.515625

13.09687

17/32

0.53125

13.49375

35/64

0.546875

13.89062

9/16

0.5625

14.2875

37/64

0.578125

14.68437

19/32

0.59375

15.08125

39/64

0.609375

15.47812

5/8

0.625

15.875

41/64

0.640625

16.27187

21/32

0.65625

16.66875

43/64

0.671875

17.06562

11/16

0.6875

17.4625

45/64

0.703125

17.85937

23/32

0.71875

18.25625

47/64

0.734375

18.65312

3/4

0.75

19.05

49/64

0.765625

19.44687

25/32

0.78125

19.84375

51/64

0.796875

20.24062

13/16

0.8125

20.6375

53/64

0.828125

21.03437

27/32

0.84375

21.43125

55/64

0.859375

21.82812

7/8

0.875

22.225

57/64

0.890625

22.62187

29/32

0.90625

23.01875

59/64

0.921875

23.41562

15/16

0.9375

23.8125

61/64

0.953125

24.20937

31/32

0.96875

24.60625

63/64

0.984375

25.00312

1

1.0

25.4