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Life & fun · December 3, 2015

Notepad Calculator – create and share back of the envelope calculations

For jotting down and sharing quick calculations. Type free-form text and see the results of any calculations appear in the margin.

Notepad Calculator – create and share back of the envelope calculations launched on December 3, 2015 with 7 votes and more than 50% of that year's launches. The site was still online in September 2026, 10 years on.

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