Get your lawn area in m², square feet, and square yards in seconds. Works for rectangles, circles, L-shapes, triangles, and irregular lawns with multiple sections. Enter your measurements and get an instant result — no maths required.
Get an accurate lawn measurement in under two minutes. Works for any shape, any size.
Select whether you are measuring in metres, feet, or yards. Then pick the shape that best matches your lawn — rectangle, circle, or triangle. For lawns that are a combination of shapes — an L-shaped garden, or a lawn with a circular section cut out — click the Add Section button to measure each part separately. The calculator adds all sections together automatically.
Takes 30 secondsMeasure each dimension with a tape measure and enter the numbers. For a rectangle, you need the length and width. For a circle, measure the diameter — the distance across the widest point. For a triangle, measure the base (the longest straight edge) and the perpendicular height (measured at 90 degrees from the base to the opposite corner). For irregular shapes, break the lawn into sections and measure each section as a simple rectangle.
Takes 5 minutesYour total lawn area appears in m², square feet, and square yards. Use the m² figure for ordering sod, fertiliser, weedkiller, or lawn treatments. Use the square footage figure when a supplier quotes in imperial. Write the number down before ordering anything — the most common cause of ordering too much or too little fertiliser and seed is using a rough estimate rather than a measured area.
Takes 5 secondsYour lawn area in m² is the number every lawn product quantity is based on. Here is what you can work out from it.
Use this table to convert between m², square feet, and square yards for common lawn sizes.
| Lawn size (m²) | Square feet (sq ft) | Square yards (sq yd) | Typical lawn type |
|---|---|---|---|
| 10 m² | 108 sq ft | 12 sq yd | Small courtyard or front garden strip |
| 20 m² | 215 sq ft | 24 sq yd | Small town garden lawn |
| 40 m² | 431 sq ft | 48 sq yd | Average semi-detached rear lawn |
| 60 m² | 646 sq ft | 72 sq yd | Mid-sized suburban garden |
| 80 m² | 861 sq ft | 96 sq yd | Larger detached rear garden |
| 100 m² | 1,076 sq ft | 120 sq yd | Large residential garden lawn |
| 150 m² | 1,615 sq ft | 179 sq yd | Large garden or plot |
| 250 m² | 2,691 sq ft | 299 sq yd | Very large garden or paddock section |
Most real lawns are not perfect rectangles. These approaches work for the most common shapes.
Divide the L into two rectangles. For an L-shape that is 10m × 6m with a 4m × 3m section cut from one corner, the area is (10 × 6) − (4 × 3) = 60 − 12 = 48 m². Alternatively, measure the two rectangles that make up the L — for example, a 10 × 3m strip and a 6 × 6m square — and add them together. Use the Add Section button to enter each rectangle separately and let the calculator total them.
For a lawn with curved edges, measure the longest length and widest width and calculate as a rectangle, then subtract approximately 20–30% for a moderately curved shape. For a heavily curved or kidney shape, divide the lawn into several narrow horizontal strips, measure each strip as a thin rectangle, and add the areas. This method — called the strip method — works for almost any curved shape and produces accurate results within 5%.
Measure the total garden area as a rectangle, then measure each planting bed, path, or paved area separately and subtract from the total. For example, a 12m × 8m garden (96 m²) with two 2m × 3m beds (12 m² total) gives a lawn area of 84 m². Add each bed as a separate section with a negative value — or simply calculate the total and subtract bed areas with a phone calculator before entering the final figure.
Answers to the most common questions about measuring lawns and using the results.
Anyone who needs an accurate lawn area before buying products or getting quotes.
You need to know your lawn area before buying fertiliser, seed, weedkiller, or top dressing. Most products list application rates in g/m² or ml/m² — without the area, you are guessing the quantity and will either buy too little or waste money on excess stock.
Sod is ordered by the m² and priced per roll. Knowing your exact area lets you order the right number of rolls with the correct waste allowance — without running short on the last strip or paying for more than you need.
Lawn care services are priced per m². Knowing your area before calling lets you compare quotes accurately and spot when a company is quoting for a larger area than your lawn actually is.
Redesigning a garden, planning a patio, or working out how much topsoil to order — all need an accurate lawn or garden area as a starting point. Use the multi-section feature to measure the full garden and individual sections separately.
