# back-of-the-envelope calculation

> rough calculation used to find the order of value of a variable rather then the exact value

**Wikidata**: [Q4839010](https://www.wikidata.org/wiki/Q4839010)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Back-of-the-envelope_calculation)  
**Source**: https://4ort.xyz/entity/back-of-the-envelope-calculation