washfit.

Measured fabric dimensional change

A sample changes.
Keep both ratios.

Record your measured fabric length and width before and after treatment. See shrinkage or growth separately, then optionally explore starting dimensions conditional on the same sample ratios applying again.

Measured input, clear modelExact local arithmeticFree + no account

Record a sample, then explore its ratios

NEGATIVE = SHRINKAGE · POSITIVE = GROWTH

01 / Enter your actual measurements

Keep the length and
width directions separate.

Original measured sample

Final measured sample

Optional desired after dimensions

An inverse result assumes the measured retention applies once to another piece. It is a conditional starting dimension, without a future-size or garment-fit guarantee.

Unsigned plain decimals, up to 12 places. Positive dimensions: 0.000001–1,000,000 mm equivalent. Final measured dimensions may also be zero. No fibre-rate defaults or treatment instructions are supplied.

This is sample arithmetic, without a laundering procedure or AATCC/ISO compliance claim. It does not choose care settings, predict future behavior, grade a pattern, add seams, model warp take-up or guarantee fit. Follow the material's care information independently.

Enter observations.

Record original and final benchmark dimensions in consistent length and width directions. The tool does not supply an assumed fibre shrinkage rate.

Keep the sign.

A shorter measured dimension is a negative change; a longer one is positive growth. Retention can therefore exceed 100%.

Label the inference.

Optional target sizing inverts the measured factor once. Other pieces, treatments and repeated cycles can behave differently.