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Hem Shortening Calculator — Take Up Hems
Calculate new hem position and fabric to remove when shortening.
How We Calculate This
The calculator determines how much to remove and where to cut based on the current and desired lengths plus the new hem allowance.
The formula
Amount to shorten = Current length - Desired length
Cut position = Desired length + New hem allowance + Pressing ease
Fabric to remove = (Current length + Current hem) - Cut position
The cut position is where the raw edge sits once you fold up the new hem plus a small turn-under margin for a clean double-fold finish. Fabric to remove is simply the original raw edge minus that cut line, so it always agrees with the cut position.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.