Quick SaaS metric map
MRR is recurring revenue normalized to a month. ARR is usually MRR×12. Churn kills compounding; net new MRR is what actually grows the base. Runway is a cash check, not a valuation model.
Nine tools on this page
- MRR / ARR — customers × ARPU (or override).
- Churn — logo %, revenue %, rough NRR.
- Net new — new + expansion − churn − contraction.
- Runway — cash ÷ net burn.
- LTV — ARPU ÷ monthly churn (optional GM + LTV:CAC).
- Payback — CAC ÷ (ARPU × GM) → months to recover.
- ARR — MRR × 12 (+ optional next-month growth).
- NRR — (start − churn + expansion) ÷ start.
- Logo churn $ — churned customers × ARPU.
- Rule of 40 — growth % + profit margin %.
Rules of thumb
- Sub-3% monthly logo churn is a common early target (varies wildly by segment).
- NRR above 100% means expansion outruns churn.
- Annual prepay is not the same as cash MRR — normalize carefully.
- Educational only — not fundraising or accounting advice.
Popular searches this tool answers
- Free MRR calculator
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FAQ
How do I calculate MRR?
Customers × monthly ARPU, or paste known MRR in the override field. ARR ≈ MRR × 12.
What is logo churn vs revenue churn?
Logo = customers lost ÷ starting customers. Revenue = MRR lost ÷ starting MRR.
Is this financial advice?
No. Educational planning math only.
Is my data private?
Yes. All math runs in your browser.
How is net new MRR calculated here?
Typically new MRR minus churned MRR (and optional expansion/contraction if you model them). Keep inputs consistent with how you report internally.
Is runway the same as profitability?
No. Runway estimates months of cash at a burn rate. You can grow MRR and still burn cash — treat runway as a cash timeline, not profit.
What is the difference between logo churn and revenue churn?
Logo churn counts lost customers. Revenue churn counts lost MRR (and can differ when big accounts cancel). Track both if your plan mix is uneven.
How do I estimate months of runway?
Roughly cash on hand divided by monthly net burn. Growing MRR helps, but runway is still about cash out minus cash in — not ARR alone.
How fast does churn erase new MRR?
If you add $10k new MRR but churn $8k, net new is only $2k. Always net new and expansion against churn before celebrating top-line adds.
Should I plan runway on gross burn or net burn?
Net burn (outflow minus inflow) is usually better for runway. Gross burn alone can overstate how fast cash disappears when revenue is material.