KNOWLEDGE CENTER
Calculators and Engineering Tools
Use practical tools to estimate daily light delivery, supplemental-lighting requirements, energy costs and the early inputs needed to plan a horticultural lighting project.
FROM INPUTS TO INSIGHTS
Turn Lighting Questions Into Practical Estimates
Early planning becomes clearer when crop targets, available natural light, lighting hours, fixture power and electricity rates are translated into comparable estimates. These tools help growers organize initial decisions before detailed photometric, electrical and site-specific system planning.
PRACTICAL PLANNING TOOLS
Calculate, Compare and Prepare Your Project
Choose the tool that matches your current planning question. Each resource focuses on a different part of evaluating crop lighting requirements and potential operating implications.
DLI Calculator
Calculate the Daily Light Integral delivered to your crop using the average PPFD at canopy level and the number of lighting hours per day.
Calculate DLISupplemental PPFD Calculator
Estimate the average supplemental PPFD required using your target DLI, available natural-light DLI and planned lighting hours.
Calculate Supplemental PPFDLED vs HPS Energy Savings Calculator
Compare estimated annual electricity use, operating costs and potential savings when evaluating LED and HPS horticultural lighting systems.
Compare LED and HPSLighting Project Questionnaire
Share your crop, production targets, growing area, facility conditions and operational requirements to support an initial lighting-project evaluation.
Start the Project QuestionnaireFEATURED ENGINEERING PRINCIPLE
Use Calculations to Inform Decisions, Not Replace System Design
A calculator is only as useful as the information entered into it. Crop targets, natural-light availability, lighting hours, fixture performance, electricity rates and facility conditions should reflect the project as accurately as possible.
The results provide valuable early estimates for comparing scenarios and organizing decisions. Final fixture selection, quantity, positioning, electrical requirements and control strategies should be confirmed through detailed, site-specific system planning.
FROM ESTIMATES TO DECISIONS
Use Planning Tools as Part of a Complete Evaluation
A useful estimate begins with clear objectives and reliable inputs. These four steps help turn calculator results into practical information for early lighting-system planning.
Define Crop and Production Targets
Identify the crop, development stage, desired DLI or PPFD, photoperiod and production objectives before estimating the lighting requirement.
Use Accurate Facility Inputs
Use representative natural-light data, cultivated area, mounting conditions, operating hours and local electricity rates whenever they are available.
Compare Practical Operating Scenarios
Evaluate different lighting schedules, supplemental-light levels, fixture powers and electricity costs to understand how assumptions influence the result.
Validate Through System Design
Confirm early estimates through fixture-layout planning, photometric evaluation, electrical review and consideration of the facility’s operating conditions.
RELATED TECHNICAL GUIDES
Build the Knowledge Behind the Calculations
Explore the measurements, technology comparisons and system-design principles that provide context for interpreting calculator results and applying them to a commercial project.
Lighting Metrics Guide
Understand PAR, PPF, PPFD and DLI, how these measurements differ and how they are used to evaluate light delivery to a crop.
Explore Lighting Metrics
LED vs HPS Lighting
Compare LED and HPS horticultural lighting through efficacy, electricity use, heat, maintenance, control capabilities and system-level considerations.
Compare LED and HPS
Lighting System Design
Learn how light distribution, fixture spacing, mounting height, electrical infrastructure and controls turn preliminary targets into a complete lighting system.
Explore System Design
WHY ENGINEERING TOOLS MATTER
Better Inputs Lead to Better Early Decisions
Planning tools make it easier to understand how changes in PPFD, photoperiod, natural-light availability, fixture power and electricity rates can influence project estimates. They help reveal missing information, compare practical scenarios and create a clearer starting point for detailed lighting-system design.
CONTINUE EXPLORING
Explore More Horticultural Lighting Topics
Continue exploring the lighting principles, system-design considerations, growing environments and crop strategies that provide context for using these planning tools.
Lighting Fundamentals
Build your understanding of PPFD, DLI, spectrum, photoperiod, efficacy and the core measurements used to evaluate horticultural lighting.
Lighting System Design
Explore how light distribution, fixture spacing, mounting height, electrical infrastructure and controls shape a complete lighting system.
Growing Environments
Learn how lighting strategies differ across commercial greenhouses, indoor farms, vertical farms and propagation facilities.
Crop Lighting Guides
Explore crop-specific lighting considerations for tomatoes, lettuce, fresh herbs, roses and other commercial horticultural crops.
PLAN YOUR PROJECT
Turn Your Lighting Estimates Into a Practical Project Plan
Calculator results can provide a useful starting point, but every crop and growing facility presents different technical and operational requirements. Share your project information and initial estimates with our team, and we will help you evaluate the next steps toward an appropriate lighting strategy.