Common Logarithm  
Tables
(For Base 1 thru 9.9)

x

0

1

2

3

4

1.0

0

.0043

.0086

.0128

.0170

1.1

.0414

.0453

.0492

.0531

.0569

1.2

.0792

.0828

.0864

.0899

.0934

1.3

.1139

.1173

.1206

.1239

.1271

1.4

.1461

.1492

.1523

.1553

.1584

x

5

6

7

8

9

1.0

.0212

.0253

.0294

.0334

.0374

1.1

.0607

.0645

.0682

.0719

.0755

1.2

.0969

.1004

.1038

.1072

.1106

1.3

.1303

.1335

.1367

.1399

.1430

1.4

.1614

.1644

.1673

.1703

.1732

x

0

1

2

3

4

1.5

.1761

.1790

.1818

.1847

.1875

1.6

.2041

.2068

.2095

.2122

.2148

1.7

.2304

.2330

.2355

.2380

.2405

1.8

.2553

.2577

.2601

.2625

.2648

1.9

.2788

.2810

.2833

.2856

.2878

x

5

6

7

8

9

1.5

.1903

.1931

.1959

.1987

.2014

1.6

.2175

.2201

.2227

.2253

.2279

1.7

.2430

.2455

0.248

.2504

.2529

1.8

.2672

.2695

.2718

.2742

.2765

1.9

.2900

.2923

.2945

.2967

.2989

x

0

1

2

3

4

2.0

.3010

.3032

.3054

.3075

.3096

2.1

.3222

.3243

.3263

.3284

.3304

2.2

.3424

.3444

.3464

.3483

.3502

2.3

.3617

.3636

.3655

.3674

.3692

2.4

.3802

.3820

.3838

.3856

.3874

x

5

6

7

8

9

2.0

.3118

.3139

.3160

.3181

.3201

2.1

.3324

.3345

.3365

.3385

.3404

2.2

.3522

.3541

.3560

.3579

.3598

2.3

.3711

.3729

.3747

.3766

.3784

2.4

.3892

.3909

.3927

.3945

.3962

x

0

1

2

3

4

2.5

.3979

.3997

.4014

.4031

.4048

2.6

.4150

.4166

.4183

.4200

.4216

2.7

.4314

.4330

.4346

.4362

.4378

2.8

.4472

.4487

.4502

.4518

.4533

2.9

.4624

.4639

.4654

.4669

.4683

x

5

6

7

8

9

2.5

.4065

.4082

.4099

.4116

.4133

2.6

.4232

.4249

.4265

.4281

.4298

2.7

.4393

.4409

.4425

.4440

.4456

2.8

.4548

.4564

.4579

.4594

.4609

2.9

.4698

.4713

.4728

.4742

.4757

X

0

1

2

3

4

3.0

.4771

.4786

.4800

.4814

.4829

3.1

.4914

.4928

.4942

.4955

.4969

3.2

.5051

.5065

.5079

.5092

.5105

3.3

.5185

.5198

.5211

.5224

.5237

3.4

.5315

.5328

.5340

.5353

.5366

x

5

6

7

8

9

3.0

.4843

.4857

.4871

.4886

.4900

3.1

.4983

.4997

.5011

.5024

.5038

3.2

.5119

.5132

.5145

.5159

.5172

3.3

.5250

.5263

.5276

.5289

.5302

3.4

.5378

.5391

.5403

.5416

.5428

X

0

1

2

3

4

3.5

.5441

.5453

.5465

.5478

.5490

3.6

.5563

.5575

.5587

.5599

.5611

3.7

.5682

.5694

.5705

.5717

.5729

3.8

.5798

.5809

.5821

.5832

.5843

3.9

.5911

.5922

.5933

.5944

.5955

x

5

6

7

8

9

3.5

.5502

.5514

.5527

.5539

.5551

3.6

.5623

.5635

.5647

.5658

.5670

3.7

.5740

.5752

.5763

.5775

.5786

3.8

.5855

.5866

.5877

.5888

.5899

3.9

.5966

.5977

.5988

.5999

.6010

X

0

1

2

3

4

4.0

.6021

.6031

.6042

.6053

.6064

4.1

.6128

.6138

.6149

.6160

.6170

4.2

.6232

.6243

.6253

.6263

.6274

4.3

.6335

.6345

.6355

.6365

.6375

4.4

.6435

.6444

.6454

.6464

.6474

x

5

6

7

8

9

4.0

.6075

.6085

.6096

.6107

.6117

4.1

.6180

.6191

.6201

.6212

.6222

4.2

.6284

.6294

.6304

.6314

.6325

4.3

.6385

.6395

.6405

.6415

.6425

4.4

.6484

.6493

.6503

.6513

.6522

X

0

1

2

3

4

4.5

.6532

.6542

.6551

.6561

.6571

4.6

.6628

.6637

.6646

.6656

.6665

4.7

.6721

.6730

.6739

.6749

.6758

4.8

.6812

.6821

.6830

.6839

.6848

4.9

.6902

.6911

.6920

.6928

.6937

x

5

6

7

8

9

4.5

.6580

.6590

.6599

.6609

.6618

4.6

.6675

.6684

.6693

.6702

.6712

4.7

.6767

.6776

.6785

.6794

.6803

4.8

.6857

.6866

.6875

.6884

.6893

4.9

.6946

.6955

.6964

.6972

.6981

X

0

1

2

3

4

5.0

.6990

.6998

.7007

.7016

.7024

5.1

.7076

.7084

.7093

.7101

.7110

5.2

.7160

.7168

.7177

.7185

.7193

5.3

.7243

.7251

.7259

.7267

.7275

5.4

.7324

.7332

.7340

.7348

.7356

X

5

6

7

8

9

5.0

.7033

.7042

.7050

.7059

.7067

5.1

.7118

.7126

.7135

.7143

.7152

5.2

.7202

.7210

.7218

.7226

.7235

5.3

.7284

.7292

.7300

.7308

.7316

5.4

.7364

.7372

.7380

.7388

.7396

X

0

1

2

3

4

5.5

.7404

.7412

.7419

.7427

.7435

5.6

.7482

.7490

.7497

.7505

.7513

5.7

.7559

.7566

.7574

.7582

.7589

5.8

.7634

.7642

.7649

.7657

.7664

5.9

.7709

.7716

.7723

.7731

.7738

X

5

6

7

8

9

5.5

.7443

.7451

.7459

.7466

.7474

5.6

.7520

.7528

.7536

.7543

.7551

5.7

.7597

.7604

.7612

.7619

.7627

5.8

.7672

.7679

.7686

.7694

.7701

5.9

.7745

.7752

.7760

.7767

.7774

X

0

1

2

3

4

6.0

.7782

.7789

.7796

.7803

.7810

6.1

.7853

.7860

.7868

.7875

.7882

6.2

.7924

.7931

.7938

.7945

.7952

6.3

.7993

.8000

.8007

.8014

.8021

6.4

.8062

.8069

.8075

.8082

.8089

X

5

6

7

8

9

6.0

.7818

.7825

.7832

.7839

.7846

6.1

.7889

.7896

.7903

.7910

.7917

6.2

.7959

.7966

.7973

.7980

.7987

6.3

.8028

.8035

.8041

.8048

.8055

6.4

.8096

.8102

.8109

.8116

.8122

X

0

1

2

3

4

6.5

.8129

.8136

.8142

.8149

.8156

6.6

.8195

.8202

.8209

.8215

.8222

6.7

.8261

.8267

.8274

.8280

.8287

6.8

.8325

.8331

.8338

.8344

.8351

6.9

.8388

.8395

.8401

.8407

.8414

X

5

6

7

8

9

6.5

.8162

.8169

.8176

.8182

.8189

6.6

.8228

.8235

.8241

.8248

.8254

6.7

.8293

.8299

.8306

.8312

.8319

6.8

.8357

.8363

.8370

.8376

.8382

6.9

.8420

.8426

.8432

.8439

.8445

X

0

1

2

3

4

7.0

.8451

.8457

.8463

.8470

.8476

7.1

.8513

.8519

.8525

.8531

.8537

7.2

.8573

.8579

.8585

.8591

.8597

7.3

.8633

.8639

.8645

.8651

.8657

7.4

.8692

.8698

.8704

.8710

.8716

X

5

6

7

8

9

7.0

.8482

.8488

.8494

.8500

.8506

7.1

.8543

.8549

.8555

.8561

.8567

7.2

.8603

.8609

.8615

.8621

.8627

7.3

.8663

.8669

.8675

.8681

.8686

7.4

.8722

.8727

.8733

.8739

.8745

X

0

1

2

3

4

7.5

.8751

.8756

.8762

.8768

.8774

7.6

.8808

.8814

.8820

.8825

.8831

7.7

.8865

.8871

0.8876

.8882

.8887

7.8

.8921

.8927

.8932

.8938

.8943

7.9

.8976

.8982

.8987

.8993

.8998

X

5

6

7

8

9

7.5

.8779

.8785

.8791

.8797

.8802

7.6

.8837

0.8842

.8848

.8854

.8859

7.7

.8893

.8899

.8904

.8910

.8915

7.8

.8949

.8954

.8960

.8965

.8971

7.9

.9004

.9009

.9015

.9020

.9025

X

0

1

2

3

4

8.0

.9031

.9036

.9042

0.9047

.9053

8.1

.9085

.9090

.9096

.9101

.9106

8.2

.9138

.9143

.9149

.9154

.9159

8.3

.9191

.9196

.9201

.9206

.9212

8.4

.9243

.9248

.9253

.9258

.9263

X

5

6

7

8

9

8.0

.9058

.9063

.9069

.9074

.9079

8.1

.9112

.9117

.9122

.9128

.9133

8.2

.9165

.9170

0.9175

.9180

.9186

8.3

.9217

.9222

.9227

.9232

.9238

8.4

.9269

.9274

.9279

.9284

.9289

X

0

1

2

3

4

8.5

.9294

.9299

.9304

.9309

.9315

8.6

.9345

.9350

0.9355

.9360

.9365

8.7

.9395

.9400

0.9405

.9410

.9415

8.8

.9445

.9450

.9455

0.946

.9465

8.9

.9494

.9499

.9504

.9509

.9513

X

5

6

7

8

9

8.5

.9320

.9325

.9330

.9335

.9340

8.6

.9370

.9375

0.938

.9385

.9390

8.7

.9420

0.9425

0.943

.9435

.9440

8.8

.9469

.9474

.9479

.9484

.9489

8.9

.9518

.9523

.9528

.9533

.9538

X

0

1

2

3

4

9.0

.9542

.9547

.9552

.9557

.9562

9.1

.9590

.9595

0.96

.9605

.9609

9.2

.9638

.9643

.9647

.9652

.9657

9.3

.9685

.9689

.9694

.9699

.9703

9.4

.9731

.9736

.9741

.9745

.9750

X

5

6

7

8

9

9.0

.9566

.9571

.9576

.9581

.9586

9.1

.9614

.9619

.9624

.9628

.9633

9.2

.9661

0.9666

.9671

.9675

.9680

9.3

.9708

.9713

.9717

.9722

.9727

9.4

.9754

.9759

.9763

.9768

.9773

X

0

1

2

3

4

9.5

.9777

.9782

.9786

.9791

.9795

9.6

.9823

.9827

.9832

.9836

.9841

9.7

.9868

0.9872

.9877

.9881

.9886

9.8

.9912

.9917

.9921

.9926

.9930

9.9

.9956

.9961

.9965

.9969

.9974

X

5

6

7

8

9

9.5

.9800

.9805

.9809

.9814

.9818

9.6

.9845

.9850

0.9854

.9859

.9863

9.7

.9890

.9894

.9899

.9903

.9908

9.8

.9934

.9939

.9943

.9948

.9952

9.9

.9978

0.9983

.9987

.9991

.9996