Historical survey plans

Imperial and metric conversion

Imperial and metric conversion factors for units of length, area and volume used in surveying.

Note: °° indicates an exact conversion.

To convert from	To	Multiply by
acres	hectares	0.40469
acres	metre²	4046.86
acres	perches	160°°
acres	roods	4.0°°
acres	square feet	43560.0°°
acres	square links	100000.0°°
acres	square miles	0.00156250°°
acres	square yards	4840.0°°
chains	feet	66.0°°
chains	links	100.0°°
chains	metres	20.1168°°
chains	miles	0.0125°°
cubic yards	metre³	0.76455
feet	chains	0.01515
feet	inches	12.0°°
feet	links	1.51515
feet	metre	0.3048°°
feet	miles	0.00019
feet	nautical miles	0.00016
feet	yards	0.33333
hectares	acres	2.47105
hectares	kilometre²	0.01°°
hectares	metre²	10000.0°°
hectares	perches	395.369
hectares	roods	9.88422
hectares	square feet	107639
hectares	square miles	0.00386
inches	feet	0.08333
inches	metre	0.0254°°
inches	millimetres	25.4°°
kilometre²	hectares	100.0°°
kilometre²	square miles	0.3861
kilometres	metres	1000.0°°
kilometres	miles	0.62137
kilometres	nautical miles	0.53996
links	chains	0.01°°
links	feet	0.66°°
links	metres	0.201168°°
links	miles	0.0000125°°
links	millimetres	201.168°°
links	nautical miles	0.00011
links	yards	0.22°°
metre²	acres	0.00025
metre²	cubic yards	1.30795
metre²	hectares	0.0001°°
metre²	perches	0.03954
metre²	roods	0.00099
metre²	square feet	10.7639
metre²	square links	24.7105
metre²	square yards	1.19599
metres	chains	0.04971
metres	feet	3.28084
metres	inches	39.3701
metres	kilometres	0.001°°
metres	links	4.97097
metres	miles	0.00062
metres	millimetres	1000.0°°
metres	nautical miles	0.00054
metres	yards	1.09361
miles	chains	80.0°°
miles	feet	5280.0°°
miles	kilometres	1.609344°°
miles	links	8000.0°°
miles	metre	1609.344°°
miles	nautical miles	0.86842
millimetres	inches	0.03937
millimetres	links	0.00497
millimetres	metre	0.001°°
nautical miles	feet	6080.0°°
nautical miles	kilometres	1.852°°
nautical miles	links	9212.12
nautical miles	metre	1852.0°°
nautical miles	miles	1.15152
perches	acres	0.00625°°
perches	hectares	0.00253
perches	metre²	25.292 5266
perches	roods	0.025°°
perches	square feet	272.25°°
roods	acres	0.25°°
roods	hectares	0.10117
roods	metre²	1 011.7110649
roods	perches	40.0°°
roods	square feet	10890.0°°
square feet	hectares	9.3E-06
square feet	metre²	0.09290304°°
square feet	perches	0.00367
square feet	roods	9.2E-05
square feet	square links	2.29568
square links	acres	0.00001°°
square links	metre²	0.04047
square links	square feet	0.4356°°
square miles	acres	640.0°°
square miles	hectares	258.999
square miles	kilometre²	2.58999
square yards	acres	0.00021
square yards	metre²	0.83613
yards	feet	3.0°°
yards	links	4.54545
yards	metre	0.9144°°

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Last updated:: 13 March 2018

Historical maps and plans