Combine Compatible Material Orders
Learn when material lines can share one purchase quantity and why specifications, units, allowances and package sizes must remain visible.
Bring material estimates into one local shopping list, combine compatible specifications and review quantities before export.

Learn when material lines can share one purchase quantity and why specifications, units, allowances and package sizes must remain visible.
Create, edit and organise local project areas and material items while keeping compatible purchases and source measurements traceable.
Use a practical checklist to review measurements, product specifications, units, allowances and exports before buying materials.
Compare two bags, boxes or cans using your required quantity, actual product coverage and price. See whole-package counts, supplied quantity, extra and cost.
Follow each quantity from the measured space to the amount you order.
Measure each section and choose its units. Keep separate areas and openings explicit.
Review the measured area or quantity before applying your material settings and allowance.
Enter an allowance that suits your job. See it separately from the net quantity.
Use your product's yield or capacity. Round up whole packs only after the required quantity is known.

Follow a measured quantity through a chosen allowance and whole-pack rounding, and learn what to check on the final shopping list.
Read the guide
See why a small change in your selected allowance can add a whole package, and keep that purchasing effect separate from the material need.
Read the guideGive each area a name that makes sense when you return to it: bedroom walls, patio slab or the path beside the garage. Keep its dimensions and material parameters with the result.
The same material name is not enough. Product specification, purchasing unit, package size and other calculation parameters must agree. Compatible unrounded requirements can be combined before the final whole-pack rounding.
Enter a price for the purchasing unit you actually plan to buy. Missing prices do not invalidate the quantities. Different currencies stay separate because PackLedge does not supply exchange rates.
Review each material line before downloading. A PDF is useful for reading and printing; CSV is useful for a spreadsheet; a JSON backup preserves the editable project. None of these files places an order with a supplier.
Original derivations using geometry, ratios, sums and whole-package rounding. Each calculator explains its assumptions and worked examples.
Instructions for the calculators, browser-local projects, user prices and downloadable project records.