centimetres
(cm)

cm or
inches

inches
(in)

2.54

1

0.394

5.08

2

0.787

7.62

3

1.181

10.16

4

1.575

12.70

5

1.969

15.24

6

2.362

17.78

7

2.756

20.32

8

3.150

22.86

9

3.543

25.40

10

3.937

50.80

20

7.874

76.20

30

11.811

101.60

40

15.748

127.00

50

19.685

Kilometres
(Km)

Km or miles

miles

1.609

1

0.621

3.219

2

1.243

4.828

3

1.864

6.437

4

2.485

8.047

5

3.107

9.656

6

3.728

11.265

7

4.350

12.875

8

4.971

14.484

9

5.592

16.093

10

6.214

32.187

20

12.427

48.280

30

18.641

64.347

40

24.855

80.467

50

31.069

Kilograms
(Kg)

Kg or
lb

Pounds
(lb)

0.454

1

2.205

0.907

2

4.409

1.361

3

6.614

1.814

4

8.819

2.268

5

11.023

2.722

6

13.228

3.175

7

15.432

3.629

8

17.637

4.082

9

19.842

4.536

10

22.046

9.072

20

44.092

13.608

30

66.139

18.144

40

88.185

22.680

50

110.231

Tonnes
(T)

T or
UK tons

UK tonnes
(Metric Tonnes)

1.016

1

0.984

2.032

2

1.968

3.048

3

2.953

4.064

4

3.937

5.080

5

4.921

6.096

6

5.905

7.112

7

6.889

8.128

8

7.874

9.144

9

8.858

10.161

10

9.842

20.321

20

19.684

30.481

30

29.526

40.642

40

39.368

50.802

50

49.210

hectares
(ha)

ha or
acres

acres

0.405

1

2.471

0.809

2

4.942

1.214

3

7.413

1.619

4

9.884

2.023

5

12.355

2.428

6

14.826

2.833

7

17.297

3.237

8

19.769

3.642

9

22.240

4.047

10

24.711

8.094

20

49.421

12.140

30

74.132

16.187

40

98.842

20.234

50

123.553

Litres
( l )

Litres or
UK Gallons

Gallons

4.546

1

0.220

9.092

2

0.440

13.638

3

0.660

18.184

4

0.880

22.730

5

1.100

27.276

6

1.320

31.822

7

1.540

36.368

8

1.760

40.914

9

1.980

45.460

10

2.200

90.919

20

4.400

136.379

30

6.600

181.839

40

8.800

227.298

50

11.000