Sharing

Click the share button to make a calc public. You'll get a permalink (instacalc.com/12345), and can add your calc to a website with an embed code.

When viewers open a shared calc, they can play with the numbers, but the original calc is unchanged.

Demo

Shared calc: https://instacalc.com/42214

Embed code:

<iframe src="https://instacalc.com/42214/embed" width="450" height="350" frameborder="0"></iframe>