About the Expansion Revenue Calculator
Expansion MRR from upsells, cross-sells and seat growth, and the expansion rate on your existing base.
Also known as: expansion mrr, upsell revenue, net expansion rate.
How to use this calculator
- Enter upsell mrr, cross-sell mrr, seat / usage growth mrr, existing mrr at start.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Expansion rate = expansion MRR ÷ starting MRR
Worked example
Using the values pre-filled in the calculator above:
- Upsell MRR = 2,500
- Cross-sell MRR = 900
- Seat / usage growth MRR = 1,600
- Existing MRR at start = 60,000
the calculator returns:
- Expansion MRR: 5,000
- Expansion rate: 8.33%