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The table below shows calculated average damage for different monster levels. Magic, Rare and Unique monsters inherently have increased damage. Monsters of the same level share DPS, this means monsters which attack slower will have higher per hit damage than the table, and monsters with high APS will do less damage per hit.

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Monster On Page 70 On The Dmg Video

It is based on this quote:

By manually fitting the average damage values onto a graph, it fits approximately to:
Monster damage = 0.0015 * Monster level ^ 3 + 0.2 * Monster level + 6 ^[1]or:
Monster damage = 17.16117 * e^(0.0495 * Monster Level) - 13.1

Data Table

Monster On Page 70 On The Dmg Lyrics

Data Chart

References

1. ↑Jaroslavna (November 8, 2014). 'PoE armour calculations'. Retrieved November 8, 2014.