Historical maps and plans

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 fromToMultiply by
acreshectares0.40469
acresmetre²4046.86
acresperches160°°
acresroods4.0°°
acressquare feet43560.0°°
acressquare links100000.0°°
acressquare miles0.00156250°°
acressquare yards4840.0°°
chainsfeet66.0°°
chainslinks100.0°°
chainsmetres20.1168°°
chainsmiles0.0125°°
cubic yardsmetre³0.76455
feetchains0.01515
feetinches12.0°°
feetlinks1.51515
feetmetre0.3048°°
feetmiles0.00019
feetnautical miles0.00016
feetyards0.33333
hectaresacres2.47105
hectareskilometre²0.01°°
hectaresmetre²10000.0°°
hectaresperches395.369
hectaresroods9.88422
hectaressquare feet107639
hectaressquare miles0.00386
inchesfeet0.08333
inchesmetre0.0254°°
inchesmillimetres25.4°°
kilometre²hectares100.0°°
kilometre²square miles0.3861
kilometresmetres1000.0°°
kilometresmiles0.62137
kilometresnautical miles0.53996
linkschains0.01°°
linksfeet0.66°°
linksmetres0.201168°°
linksmiles0.0000125°°
linksmillimetres201.168°°
linksnautical miles0.00011
linksyards0.22°°
metre²acres0.00025
metre²cubic yards1.30795
metre²hectares0.0001°°
metre²perches0.03954
metre²roods0.00099
metre²square feet10.7639
metre²square links24.7105
metre²square yards1.19599
metreschains0.04971
metresfeet3.28084
metresinches39.3701
metreskilometres0.001°°
metreslinks4.97097
metresmiles0.00062
metresmillimetres1000.0°°
metresnautical miles0.00054
metresyards1.09361
mileschains80.0°°
milesfeet5280.0°°
mileskilometres1.609344°°
mileslinks8000.0°°
milesmetre1609.344°°
milesnautical miles0.86842
millimetresinches0.03937
millimetreslinks0.00497
millimetresmetre0.001°°
nautical milesfeet6080.0°°
nautical mileskilometres1.852°°
nautical mileslinks9212.12
nautical milesmetre1852.0°°
nautical milesmiles1.15152
perchesacres0.00625°°
percheshectares0.00253
perchesmetre²25.292 5266
perchesroods0.025°°
perchessquare feet272.25°°
roodsacres0.25°°
roodshectares0.10117
roodsmetre²1 011.7110649
roodsperches40.0°°
roodssquare feet10890.0°°
square feethectares9.3E-06
square feetmetre²0.09290304°°
square feetperches0.00367
square feetroods9.2E-05
square feetsquare links2.29568
square linksacres0.00001°°
square linksmetre²0.04047
square linkssquare feet0.4356°°
square milesacres640.0°°
square mileshectares258.999
square mileskilometre²2.58999
square yardsacres0.00021
square yardsmetre²0.83613
yardsfeet3.0°°
yardslinks4.54545
yardsmetre0.9144°°

Related links

    In this guide

    1. Survey plan prefixes abbreviations
    2. Survey plans county prefixes
    3. Imperial and metric conversion

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