Weights of Various Materials

Metric conversions

To convert Kilograms to (long)tons - multiply by 0.00098
To convert tons to kilograms - multiply by 1016.05
To convert feet to meters - multiply by 0.3048
To convert kilograms to tons - multiply by 0.001
To convert meters to feet - multiply by 3.281

Estimation of weight – Estimate: Then Add 25%

2,240lbs = 1ton (long)

2,000lbs = 1ton (short)

20cwts = 1ton (long)

1,000kg = 1tonne (metric)

The table below gives the weight per unit volume for a range of materials:

Material	Weight in Kilograms per cubic meter	Weight in pounds per cubic foot
Aluminium	2700	170
Brass	8500	530
Copper	8800	550
Iron/steel	7700	480
Oil	800	50
Fresh Water	1000	62
Salt Water	1025	64

Steel plate: Average weight in


Lbs. Per sq ft	kgs per sq. meter
¼” thick 10	6mm thick 47.1
3/8” thick 15	10mm thick 78.5
½” thick 20	12mm thick 94.2
¾” thick 30	20mm thick 157
1” thick 40	25mm thick 196

Pipes: weight in Lbs per ft length


Steel :
1” bore 2	Cast iron:	4” bore 16
2” bore 5	Cast iron:	5” bore 22
3” bore 8	Cast iron:	6” bore 30
4” bore 10	Cast iron:	9” bore 52

Rolled Steel Joists: Average Weight


per meter in Kgs	per Ft in Lbs

76mm x 76mm =12.75	3 x3 = 5 ½
102mm x 44mm = 7.5	6 x 3 = 12
102mm x 102mm = 23	8 x 4 = 18
127mm x 76mm = 16.5	8 x 6 = 35
127mm x 114mm = 26.8	9 x 4 = 21
152mm x 127mm = 37.3	9 x 7 = 50
203mm x 152mm = 52.25	10 x 5 = 30
254mm x 114mm = 37	10 x 8 = 55
254mm x 203mm = 82	12 x 6 = 44
	14 x 6 = 57
	15 x 6 = 59
	18 x 7 = 75
	24 x 7 ½ = 100

Round Steel Bar


Lbs per ft length	Kgs per meter length


Dia	Weight	Dia	Weight
10	0.6	½”	2/3
20	2.5	1”	3
25	3.8	1 ½”	6
50	15.4	24”	11
3”	24
4”	43
6”	96

Drill Pipe

Standard

5” dia 19.5 lbs per ft length
3 ½ dia 13.3 lbs per ft length

Heavyweight drill pipe

Always 50 lbs per ft length

Drill Collars

4 ¾ dia 47 lbs per ft length
7 ¾ dia 3.360 – 4.600 lbs per 30 ft length

Subs

86 lbs per ft length (average)

Drill Casing

Diameter	No in Bundle	Approx Weight
5”	7	3t
7”	5	4t
9 5/8	3	3.5t
13 3/8	3	4t
18 5/8	3	5t