Lawn Mowing Time Calculator — How Long to Mow Your Lawn

Active push-mowing of a 100 m² lawn takes roughly 5-10 minutes, and a 500 m² lawn about 25-35 minutes (the calculator applies the industry-standard 80% efficiency factor for turning and overlap). Add 10-20 minutes for edging, raking and emptying the box on a real cut. Self-propelled mowers are about 20% faster, and ride-on mowers cut large lawns 3-4 times faster than walking.

For small lawns (under 100 m²), a 30-35 cm cut width is fine. Medium lawns (100-300 m²) suit 35-45 cm. Large lawns (300+ m²) benefit from 45-55 cm. Ride-on mowers typically have 76-107 cm cutting decks.

A 10% overlap is standard and prevents missed strips. On uneven ground or with irregular edges, increase to 15-20%. Professional groundskeepers often use 10-15% overlap for a clean finish.

Yes, each obstacle (tree, flower bed, ornament) adds 1-2 minutes for manoeuvring around it. A lawn with 10 obstacles could add 15-20 minutes to your total mowing time compared to an open lawn.

Weekly mowing is ideal from March to October in the UK. In peak summer, twice weekly may be needed. In spring and autumn, fortnightly is usually sufficient. Never cut more than one-third of the grass blade height at once.