Irrigation Calculator – Gallons & Pivot Hours per Acre
Free irrigation water calculator. Estimate daily ET, gallons per acre, and pump hours for center pivot, drip, and flood systems.
This free calculator is part of CropBuddy's open farm-tools suite. Use it directly in your browser — no signup, no email, no download. Results update instantly as you change inputs, and you can save your numbers to a free CropBuddy account to track them across the season.
About this calculator
Free irrigation water calculator. Estimate daily ET, gallons per acre, and pump hours for center pivot, drip, and flood systems. Built for owner-operators of mid-size farms who need quick answers in the field without opening a spreadsheet. Pair it with CropBuddy's field mapping, task scheduling, and harvest tracking for a complete farm management workflow.
More farming tools: Acreage, Planting dates, NPK fertilizer, Harvest yield, Irrigation, Seed rate, Grain market.