New SMS Reminder is now on Shopify. Add appointment booking to your store, free plan available. Get it on Shopify →
A no-show is a booked appointment where the client doesn't arrive and doesn't cancel in time for you to fill the slot. Those missed appointments add up. Enter three numbers below to estimate what no-shows cost you each month — and how much you could recover by reducing them.
Nothing you enter is saved — the calculator runs entirely in your browser.
The estimate is a simple multiplication:
Estimated monthly recovery = average appointment value × monthly no-shows × recovery rate
For example, if your average appointment is worth $150, you get 8 no-shows a month, and you believe reminders could recover about 30% of them, that's roughly $360 a month — over $4,300 a year. Multiply your own monthly figure by 12 for an annual estimate.
A missed appointment isn't only the lost booking fee. It's also the prep time, the space and staff held for that slot, and the chance to have booked someone else in. For appointment-based businesses, a run of no-shows can quietly take a meaningful bite out of monthly revenue — which is why even a small reduction is worth chasing.
The most reliable lever is a consistent reminder system: send an SMS reminder around 24 hours before and again on the day, make it easy for clients to confirm or cancel by reply or link, and set clear expectations at booking. Automating it so a reminder goes out for every appointment is what keeps the improvement steady. Our full guide walks through it step by step.
Read: how to reduce no-shows for appointments →Multiply your average appointment value by the number of no-shows you get in a month. To estimate what you could win back, multiply that by the share of no-shows you believe reminders and confirmations could prevent. For example: $150 average value × 8 no-shows × 30% recovery ≈ $360 a month, or roughly $4,300 a year.
A no-show is a booked appointment where the client neither turns up nor cancels in time for you to fill the slot. It is different from a cancellation, where the client tells you in advance and you may still be able to rebook the time.
No-show rates vary widely by industry and clientele, so the useful benchmark is your own trend over time. Track your rate each month and aim to lower it — reminders, required confirmations, and clear booking expectations all help.
Send an SMS reminder about 24 hours before and again on the day, make it easy to confirm or cancel by reply or link, and set expectations at booking. Automating reminders so they send for every appointment is what makes the reduction consistent.
No. The calculator runs entirely in your browser and nothing you enter is saved or sent anywhere.
No. The figure is an estimate based on the numbers you enter, including your own assumption about how many no-shows you could prevent. Actual results vary by business.
Connect SMS Reminder to Google Calendar and every appointment gets an automatic reminder — clients confirm by reply, and your calendar updates itself.
Start your free trial.