Measuring Your Garden Area

A measuring guide for your garden turf or landscaping project.

Helping you work out how much new lawn grass to buy.

To measure the area of your planned fresh new lawn in general you just need to multiply the average length by the average width to determine the amount of turf you will need.

It is a good idea to order approximately 10% extra turf for filling odd gaps and spaces and to cover any slight inaccuracy of measurements.

Square or rectangular shaped garden or field area

To calculate the rectangular area multiply the short side by the long side (length x width).

If a rectangle is 6 metres wide and 8 metres long it would be 48 square metres. Adding 10% for any issues would suggest you would need around 53 square metres of turf.

To calculate the square area multiply both sides.

If a square is 6 metres by 6 metres it would be 36 square metres. Adding 10% for any issues would suggest you would need just under 40 square metres of turf.

Circles and circular garden shapes

For a circular area take the radius (half the distance across the middle of the circle) and square it.

If the circle is 30 metres across take half of that (15 metres) and multiply it by itself.

To finish the calculation it’s best to then take the radius and multiply that by 3.14 (or Pi as it’s known in maths). For example: 15 x 15 = 225, you would then need to multiply it with 3.14 which is of course 225 x 3.14 = 707 metres squared.

Again it’s best to add 10% extra just incase of any issues or errors in calculation.

Triangles / triangular shaped garden areas

Right-Angled Triangles

Take the vertical nad horizontal lengths and multiply by each other then simply divide by 2.

If a triangle is 6 metres wide and 8 metres long it would be 48 square metres. Divded by 2 would be 24 metres squared. Adding 10% for any issues would suggest you would need around 27 square metres of turf.

Other triangle area

If your triangle isn’t right-angled you need to find the centre of your irregular triangle and cut it into two halves from the peak / point, straight down towards the long side, making two right-angled triangles. Now find the area for each one of the little triangles and add them together.

Irregular or odd shaped garden turf areas

If your garden area is a little unusual in shape, use the techniques from the measuring guides above to break up the odd shape in to smaller areas and calculate the total area from the smaller shapes.