Tools & Resources | Feed An Island

Food security calculators

Choose a tool based on the question you need to answer—How much food? How much water? What is the impact? What savings can we prove?

Crop Yield & Servings Calculator

Estimate total pounds produced, servings fed, and planning-level output based on area, crop type, and growing system.

lbs produced servings fed area-based

Best for: proposals + community planning Open

Water Demand & Irrigation Calculator

Estimate daily and seasonal irrigation needs, compare water sources, and model water-saving scenarios for resilient island growing.

gal/day rainwater efficiency

Best for: water-limited sites Open

Farm-in-a-Box Project Budget Calculator

Build a project budget (CAPEX + OPEX), estimate cost per pound and cost per serving, and show a clear funding gap for grants and sponsorships.

capex + opex $/lb funding gap

Best for: grants + sponsors Open

Import Reduction & Cost Savings

Quantify import displacement—estimate local production share, cost savings, and emissions avoided from shorter supply chains.

import savings food miles budget clarity

Best for: decision makers Open

Island Food Security Index

Create a simple vulnerability score using land, water, import reliance, and climate risk to prioritize projects and funding.

risk score planning prioritization

Best for: island assessments Open

Tomato Volcano Shade House Calculator

Plan a Tomato Volcano shade house: estimate volcano beds, plant count, annual yield, water demand, and shade cloth sizing—plus quick layout metrics for protected growing.

layout yield + water shade cloth

Best for: protected growing Open

Planning guides

Use these guides to understand constraints unique to islands (water, imports, storage, storms) and how resilient growing systems can be designed for reliable output.

Want the calculators on your island?

If you’re a community leader, NGO, school, or property partner, we can adapt tools and plans to your acreage, water constraints, and food goals.

Tip: If you’re preparing a grant, start with the Yield & Servings calculator, then add the Water Demand model for resource proof.

FAQ

Quick answers for partners and planners.

These tools are designed for planning-level estimates—great for proposals, comparisons, budgeting, and scenario testing. If you need engineering or agronomy-grade precision for a specific site, we recommend validating with local soil, water, and climate data.

Start with Yield & Servings to define output, then use Water Demand to confirm feasibility. If you’re writing grants or reporting impact, add Carbon & Co-Benefits.

Yes—these tools are designed to be adaptable to local realities like import costs, rainfall patterns, water access, crop preferences, and land constraints. Use the contact page to share your goals and we can map a deployment plan.