Convert Cord (cd) to Acre-Foot (ac*ft) instantly.
About these units
Cord (cd)
The cord is a large unit used in North America to measure firewood, defined as a neatly stacked pile measuring 128 cubic feet (usually arranged as 4 ft × 4 ft × 8 ft). Its strict definition helps prevent fraud in firewood sales and ensures fairness in trade. The cord accounts for both wood and air space, though the amount of actual wood can vary depending on how tightly it is stacked. Despite the prevalence of metric units worldwide, the cord remains a robust standard in forestry, firewood commerce, and rural heating practices across the US and Canada.
Acre-Foot (ac*ft)
An acre-foot represents the volume of water needed to cover one acre of land to a depth of one foot—approximately 1,233.48 cubic meters or 325,851 gallons. This unit is foundational in water resource management throughout the western United States, where large-scale irrigation, reservoir planning, and drought analysis depend on acre-foot measurements. For example, major reservoirs like Lake Mead and Lake Powell hold billions of acre-feet. In agriculture, irrigation districts track water rights and allocations using acre-feet, making it a key component of water law. Its scale is ideal for representing the enormous water needs associated with farming, urban expansion, and environmental preservation.