MRR calculator

Updated 2026-08-04

Enter your active subscriptions by billing interval. Everything is normalised to a monthly figure before being summed, which is the only way the total means anything.

Why the annual number is divided by twelve

This is the mistake that inflates most MRR figures. A customer paying $290 once a year is not contributing $290 of monthly recurring revenue — they contribute $24.17 a month. Counting the full amount in the month it was charged makes your MRR spike every January and collapse every February, and makes the metric useless for the one thing it exists for: forecasting.

Full explanation in how to calculate MRR with annual plans.

Why weekly multiplies by ~4.333

Not 4. A year has 52 weeks, not 48. The correct conversion is weekly × 52 ÷ 12 = × 4.333. Using 4 undercounts weekly revenue by about 8%.

What this calculator deliberately excludes

• One-off sales. Not recurring, so not MRR. See does one-off revenue count?
• Trials. Not yet paying. Count them when they convert.
• Past-due and cancelled subscriptions. Not active revenue.
• Fees. MRR is conventionally gross. See gross vs net MRR.

Doing this automatically

Typing averages in gives you an estimate. If you want the real figure computed from live subscription data across Stripe, Lemon Squeezy and more — including the annual and weekly normalisation above — that's what FRGMNT does on your phone.