Capacity calculator
A to-do list never asks whether the day is possible. This time blocking capacity calculator adds every task’s duration, subtracts meetings already on the calendar, and compares the total to the free hours you actually have. The sample Tuesday is the same twelve tasks from our worked example — about 10 hours 20 minutes of work against 7 free hours. Edit the list. The math updates instantly. You still place the blocks; this tool only tells you if they fit.
Hours you can actually work today, before subtracting meetings below.
Optional name, plus how long each item takes.
Standup, 1:1s, and meetings already on the calendar. They reduce free hours.
148% of free hours
Your list never warned you. Twelve ordinary lines can hide a day that was over budget before 9 AM.
Largest items that cover the overflow — move these, shrink them, or leave them for tomorrow:
You place the blocks on ToBlock’s day timeline — the calendar you look at while planning. Collision warns if a slot is taken and points at the next free window; you still decide. Blocks can also write into Apple Calendar as native events (secondary). Unfinished work waits for Plan Tomorrow. Free to download. 14-day Pro trial. ToBlock Pro is $0.99/mo or $9.99/yr.