Standard Lawn Mower Dimensions (The Quick Overview) Type of Lawn MowerWidth of Cutting DeckSize of Yard Riding Mowers & Lawn Tractors36 to 42 inches 42 to 54 Inches1 to 2 acres 3 to 4 acres Zero Turn Mowers36 to 42 inches 42 to 54 inches 54 to 72 inches1 to 2 acres 3 to 4 acres More than 4 acres 2 more rows