| Space | Area | Height | Type | Plan Days | Estimated Total Usage | Units Needed |
|---|---|---|---|---|---|---|
| Potting Shed | 120 ft² | 8 ft | Spray | 7 | ~65 mL | 1 can |
| Greenhouse | 18 m² | 2.5 m | Gel | 14 | ~8 g | 1 jar |
| Garden Room | 250 ft² | 9 ft | Plug-in | 30 | ~140 mL | 7 refills |
Height (m) = ft × 0.3048 (if needed)
Volume (m³) = Area (m²) × Height (m)
Gel: Total = (Volume × g/day rate × Days) × Buffer
Plug-in: Total = (mL/hour × Hours/day × Days) × Buffer
- Measure your space (floor area and ceiling height), then choose units.
- Select ventilation and intensity to match your conditions and preference.
- Pick a freshener type and enter the related usage inputs.
- Set planning days and optional buffer to avoid running short.
- Click Calculate to see totals, units needed, and cost.
- Download CSV/PDF to save or share your plan.
Coverage Planning for Garden Interiors
This calculator estimates how much fragrance product is needed to keep enclosed garden areas comfortable. It converts floor area and ceiling height into cubic meters, then applies a usage model that matches your chosen product type. Higher space volume generally increases the dose required to achieve the same perceived freshness.
Ventilation and Intensity Adjustments
Ventilation is treated as a multiplier because open vents and fans move scented air out of the space. The tool uses 0.85 for low ventilation, 1.00 for medium, and 1.20 for high. Intensity works similarly, scaling from 0.85 to 1.25. These factors help you compare a lightly scented greenhouse with a heavily ventilated potting shed.
Spray, Gel, and Plug-In Models
Sprays are estimated per application using volume and a base rate, but the calculator also considers your spray count, assuming about 0.10 mL per spray. Gel is modeled as grams per day, reflecting slow release. Plug-ins estimate milliliters per hour, scaled by room volume and your daily runtime hours.
Units, Refills, and Budget
Total usage is divided by your unit size (mL or g) to estimate how many cans, jars, or refills you should purchase. A buffer percentage accounts for real-world waste such as overspraying, temperature-driven evaporation, or inconsistent runtime. Adding a unit cost produces a quick budget figure for the full planning period.
Practical Use in Plant-Focused Spaces
Because garden environments include seedlings, beneficial insects, and sensitive foliage, moderate fragrance is usually safer than heavy dosing. Use the calculator to target consistency rather than maximum strength, and reassess after seasonal changes. Warmer days and stronger airflow can increase consumption, so update inputs when conditions shift. For routine scheduling, plan a short trial week, record how long a can or refill lasts, then refine the unit size or buffer. If you notice irritation or plant stress, lower intensity and increase ventilation instead of adding more product during peak working hours.
FAQs
Use it for enclosed or semi-enclosed patios with measurable walls and roof. For fully open patios, airflow dominates and results will overestimate. Use low intensity and high ventilation to approximate outdoor conditions.
Enter the labeled net content of your product: spray can milliliters, gel jar grams, or plug-in refill milliliters. This lets the calculator convert total usage into the number of units you need to buy.
Fresh air exchange removes scented air and lowers concentration. To maintain the same perceived level, you typically need more product in spaces with fans, open vents, or frequent door opening.
It estimates milliliters per application from room volume and factors, then compares that to your spray count using 0.10 mL per spray. The calculator uses the higher value to avoid underestimating.
Buffer increases totals to cover overspray, warmer temperatures, faster evaporation, or inconsistent plug-in runtime. If you are testing a new product, start with 10–15% and adjust after one week of real use.
Many plants and pollinators are sensitive to strong fragrances. Use mild products, avoid direct spraying on foliage and soil, and keep airflow steady. If you notice stress or reduced insect activity, reduce intensity and shorten exposure.