CalculationTime

Appointment Calendar

Time Duration Calculator
CalculationTime

Appointment Calendar

A printable booking planner for appointment length, buffers, open days, blackout dates, held capacity and demand beside the CalculationTime clockface.

Inputs, result, proof and time.

Use the instrument above, then check the calculation record, assumptions and related tools below.

Appointment Builder

Calculate appointment capacity

Open weekdays

Appointment Calendar

Front Desk Schedule

Mon, 27 July 2026 to Sun, 23 Aug 2026
Capacity
108
Forecast
120
Open days
18
Fill
100%
6Bookable slots per open day
8Gross slots before holdback
12Appointments over capacity
Mon, 10 AugTwo-week follow-up checkpoint
Week 1Mon, 27 July to Sun, 02 Aug
Mon6 bookable9:00am10:00am11:00am12:00pm
Tue6 bookable9:00am10:00am11:00am12:00pm
Wed6 bookable9:00am10:00am11:00am12:00pm
Thu6 bookable9:00am10:00am11:00am12:00pm
Fri6 bookable9:00am10:00am11:00am12:00pm
SatClosed
SunClosed
Week 2Mon, 03 Aug to Sun, 09 Aug
MonBlackout
Tue6 bookable9:00am10:00am11:00am12:00pm
Wed6 bookable9:00am10:00am11:00am12:00pm
Thu6 bookable9:00am10:00am11:00am12:00pm
Fri6 bookable9:00am10:00am11:00am12:00pm
SatClosed
SunClosed
Week 3Mon, 10 Aug to Sun, 16 Aug
Mon6 bookable9:00am10:00am11:00am12:00pm
Tue6 bookable9:00am10:00am11:00am12:00pm
Wed6 bookable9:00am10:00am11:00am12:00pm
Thu6 bookable9:00am10:00am11:00am12:00pm
Fri6 bookable9:00am10:00am11:00am12:00pm
SatClosed
SunClosed
Week 4Mon, 17 Aug to Sun, 23 Aug
MonBlackout
Tue6 bookable9:00am10:00am11:00am12:00pm
Wed6 bookable9:00am10:00am11:00am12:00pm
Thu6 bookable9:00am10:00am11:00am12:00pm
Fri6 bookable9:00am10:00am11:00am12:00pm
SatClosed
SunClosed

Assumptions

45 minute appointments plus 15 minute buffer. 9:00am to 5:00pm appointment window. 15% held for urgent, admin or recovery time. 5 selected workdays per normal week.

Printed Notes

Confirm practitioner availability, rooms, travel, leave and local public holidays outside this worksheet.

Limits

This is appointment capacity arithmetic. Confirm staffing, rooms, travel, cancellations, local holidays and clinical, legal or contractual rules separately.

Method

The planner turns opening hours into dated booking capacity

Each open day is divided into appointment length plus buffer length. The worksheet then removes held capacity, skips closed weekdays and blackout dates, and compares the remaining slots with forecast demand.

Capacity stays visible

Appointment length, buffer, open hours, selected weekdays, held percentage and blackout dates are printed beside the result.

Print path

The print button opens browser print. The print stylesheet keeps the header, summary, week grid, notes, assumptions and limits.

Limits

This is scheduling arithmetic, not a booking system, roster, clinical policy, contract rule, travel plan or cancellation model.

Source Notes

Civil dates and browser form controls

CalculationTime uses browser Date objects for local Gregorian date stepping and HTML date/time inputs for YYYY-MM-DD and HH:MM values. Local holidays, room availability, staff rosters and industry-specific rules are not bundled.

ReferencesECMAScript Date objectsISO 8601 date and time formatHTML date input