I've gone blank - help me measure up for curtains please?

[moodlum]

So I have a window that measures 145cm across, and I want curtains that fall to the floor, which is a height of 220cm.

The fabric doesn't have a pattern repeat, and is 140cm wide.

So how many metres do I need? Is it 2.5 x something?

Please help I have until midnight to get 25% off a fabric and am a bit foxed.

TIA

this should help

Thank you

I had found that site but not that helpful page, so thank you.

what height is your curtain rail off the floor.