After-Hours Call Cost Calculator
See how many calls land outside business hours, how many go unanswered for good, and the revenue at risk each month from calls nobody calls back. Free tool.
The calls that come in after you close don't show up in a queue report the next morning — they show up as a voicemail nobody left, or a caller who tried the competitor instead. Support teams that measure abandon rate during business hours often have no equivalent number for the hours they're not staffed at all, which is usually when the highest-intent callers — the ones with an urgent problem — are calling.
Enter weekly call volume, the share that lands after hours, how many of those callers leave a voicemail, how many voicemails you reach on callback, your live-answer conversion rate, and the value of a converted call. It shows after-hours calls per month, contacts you lose for good, the revenue that's at risk, and what answering those same minutes with an AI agent at $0.20 a minute would cost instead.
Lost = after-hours calls − (voicemails × callback reach). Revenue at risk = lost × conversion × value. Agent cost = calls × minutes (rounded up) × $0.20. Nothing you enter leaves your browser.
This ran in your browser on what you typed. The product runs on your actual calls, chats and emails.
Put a number on your own after-hours calls — start freeWhat each input means
- 01
Inbound calls per week
Every inbound call across the lines you publish, from your telephony provider's report. If you run multiple locations, total them or run this once per site.
- 02
Share arriving outside business hours (%)
Calls that land before opening, after closing, or on a day you're not staffed, as a share of the total above. Your provider's timestamp data filtered against your hours gives you this directly.
- 03
Share of those callers who leave a voicemail (%)
Of the after-hours callers, what share actually leave a message rather than hanging up. Most callers who hit an after-hours greeting don't — they try again later or call someone else instead.
- 04
Share of voicemails you reach on callback (%)
Of the voicemails left, how many you successfully reach when you call back the next business day. A caller who's since been helped elsewhere, or who doesn't answer an unknown number, doesn't count.
- 05
Conversion rate on a live-answered call (%)
What share of calls answered live — during business hours, or reached on callback — end in a booking, an order, or a retained customer. Use the same figure your missed call calculator uses if you've run that one.
- 06
Value of a converted call ($)
What a converted call is worth on average: order value, contract value, or the margin you'd defend. Use your median, not your best month.
Questions about this tool
It depends entirely on your hours and industry, so there's no single benchmark — a business open 9-to-5 on weekdays can easily have a third or more of its inbound calls land outside that window, once evenings and weekends are counted. Run your own numbers above rather than assuming a rate.