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close this bookBetter Farming Series 10 - The Farm Business Survey (FAO - INADES, 1976, 38 p.)
close this folderPart 2 - The farm business survey
View the document(introduction...)
View the documentWhy make a farm business survey?
View the documentA farmer should know the size of his fields
View the documentHow to reckon the length and width of a field
View the documentHow to reckon the area of a field
View the documentHow to measure the weight of a harvest
View the documentHow to reckon the yield per hectare
View the documentHow to reckon receipts
View the documentExplanations to help in answering the questionnaire

How to reckon the area of a field

The area of a field is measured in square metres (m²).

To reckon the area of a field that has the shape of a rectangle, multiply the length in metres by the width in metres.

Area of a field = length x width

Example: I have a field which is 54 metres long and 22 metres wide; the area of the field is

54 m x 22 m = 1 188 m². I have another field which is 187 m long and 84 m wide; the area of the feed is

187 m x 84 m = 15 708 m². I have a garden which is 21 m long and 8 m wide; the area of my garden is 21m x 8m= 168 m².

Usually, to measure the area of a field, we use another unit of measurement which is more useful than m². This is the hectare (ha). A hectare equals 10 000 m². It is the area of a square field, the four sides of which are each 100 metres long.

How to change into hectares the area off a field given in m².

You simply put in a decimal point four places back, thus:

15 708 m² = 1.5708 ha
1 188 m² = 0.1188 ha
168 m² = 0.0168 ha