Waste Percentage Calculator

Work out the waste rate you actually achieved, from what you bought and what the project used, and what that waste cost.

Material bought units

Metres, square metres, sheets, grams, rolls. Whatever unit the price is for.

Material in the finished project units

The amount actually in the finished item, measured if you can.

Price per unit

The price for one metre, one sheet, one kilogram, one roll.

Share of the waste you will reuse %

Offcuts big enough for another project are stock, not waste.

Useful items produced

Used for the material cost per item.

Waste rate you planned for %

The allowance you actually used when buying. The comparison shows whether the planning was right.

Reset

Free calculator by Handcraft worked examples and methodology No account, nothing stored.