How the plan builder works
The other tools on this site each answer one question, so a full decision means entering the same measurements several times. This page keeps them in one place. You pick what you are covering, measure it once, and the size, fabric, weight, and price all update together from that single set of numbers.
- Pick the job. Each job has its own geometry. An equipment cover drops over the top and down all four sides; a firewood cover hangs over the top only, because the sides need to stay open for drying.
- Measure once. Length, width, height, and the allowance you want at the ends and sides. Nothing is asked twice.
- Compare fabrics. Every option is weighed and priced at the exact size the page just worked out, so the difference between a light cover and a heavy one is a real number rather than a label.
- Take it with you. Save the plan to this device, copy a link that reopens it, copy the shopping list, or print it.
These are planning numbers, not a quotation
The size comes from the geometry you enter, and the weight and price come from published fabric ranges applied to the size you would actually buy. A seller's price, shipping, seam layout, reinforcement, and grommet spacing are not something this page can know. Treat the plan as the shape of the decision, then check the finished specification on the real listing.
Choosing between the fabric options
Each plan shows the lightest option first, then what the heavier ones add in weight and money at your size. That comparison matters more than the fabric name, because the same cover can be a one-person lift in PE and a two-person job in coated polyester.
The usual trade is honest: lighter fabric is cheaper and easier to move, and it wears out sooner where it rubs. Heavier fabric resists abrasion and repeated handling and costs more per square foot. If the cover will sit untouched for years, the lighter option is often enough. If it comes on and off weekly, or drags over sharp machinery, the added weight is the point.
Measuring so the plan is right
- Measure the longest and widest points, including attachments, mirrors, handles, and anything that sticks out.
- For equipment, the height is the distance from the top down to the lowest point you want covered.
- The allowance is working room, not slack. It covers tie-down placement, overlap, and the fact that nobody centers a tarp perfectly outdoors.
- Compare the final size with the manufacturer's finished, hemmed dimensions, which are usually smaller than the cut size in the product name.
What the plan does not cover
Wind loading, support structure, drainage, and whether a cover is safe to walk on or use near traffic are all decisions this page does not make. Ridge poles, slope, anchoring hardware, and building codes are outside the plan. For anything that keeps water out of a living space, or holds a load in place, the cover is one part of a system and not the whole answer.
Your measurements stay on your device
The plan is calculated in your browser. Saving a plan stores it in this browser's local storage, and a share link encodes the measurements in the address itself. Either way the numbers are not sent to a server. See the privacy policy for details.