1/4

0.2500

1/2

0.488

0.500

0.556

0.577

15/64

0.218

0.250

5/16

0.3125

9/16

0.546

0.562

0.622

0.650

19/64

0.280

0.314

3/8

0.3750

11/16

0.669

0.688

0.763

0.794

23/64

0.341

0.377

7/16

0.4375

3/4

0.728

0.750

0.830

0.866

27/64

0.403

0.441

1/2

0.5000

7/8

0.850

0.875

0.969

1.010

31/64

0.464

0.504

9/16

0.5625

15/16

0.909

0.938

1.037

1.083

35/64

0.526

0.568

5/8

0.6250

1 1/16

1.031

1.062

1.175

1.227

39/64

0.587

0.631

3/4

0.7500

1 1/4

1.212

1.250

1.382

1.443

47/64

0.710

0.758

7/8

0.8750

1 7/16

1.394

1.438

1.589

1.660

55/64

0.833

0.885

1

1.0000

1 5/8

1.575

1.625

1.796

1.876

63/64

0.956

1.012

1 1/8

1.1250

1 13/16

1.756

1.812

2.002

2.093

1 7/64

1.079

1.139

1 1/4

1.2500

2

1.938

2.000

2.209

2.309

1 7/32

1.187

1.251

1 3/8

1.3750

2 3/16

2.119

2.188

2.416

2.526

1 11/32

1.310

1.378

1 1/2

1.5000

2 3/8

2.300

2.375

2.622

2.742

1 15/32

1.433

1.505

1 5/8

1.6250

2 9/16

2.481

2.562

2.828

2.959

1 19/32

1.556

1.632

1 3/4

1.7500

2 3/4

2.662

2.750

3.035

3.175

1 23/32

1.679

1.759

1 7/8

1.8750

2 15/16

2.844

2.938

3.242

3.392

1 27/32

1.802

1.886

2

2.0000

3 1/8

3.025

3.125

3.449

3.608

1 31/32

1.925

2.013

2 1/4

2.2500

3 1/2

3.388

3.500

3.862

4.041

2 13/64

2.155

2.251

2 1/2

2.5000

3 7/8

3.750

3.875

4.275

4.474

2 29/64

2.401

2.505

2 3/4

2.7500

4 1/4

4.112

4.250

4.688

4.907

2 45/64

2.647

2.759

3

3.0000

4 5/8

4.475

4.625

5.102

5.340

2 61/64

2.893

3.013

3 1/4

3.2500

5

4.838

5.000

5.515

5.774

3 3/16

3.124

3.252

3 1/2

3.5000

5 3/8

5.200

5.375

5.928

6.207

3 7/16

3.370

3.506

3 3/4

3.7500

5 3/4

5.562

5.750

6.341

6.640

3 11/16

3.616

3.760

4

4.0000

6 1/8

5.925

6.125

6.755

7.073

3 15/16

3.862

4.014