# The 1-3-5 rule: one big task, three medium, five small > The 1-3-5 rule gives each day a shape: one big task, three medium ones and five small ones. How it works, where nine tasks is too many, and how to fit it into Noodle. Published 2026-10-21, updated 2026-10-21 · Daily planning methods · https://www.noodleassistant.com/blog/one-three-five-rule The 1-3-5 rule says a day holds one big task, three medium ones and five small ones. Most to-do lists treat every task the same: "Write the proposal" and "Buy stamps" each get one line, as if they took the same time. The 1-3-5 rule gives the day a shape instead of just a length. ## Where it comes from The rule comes from Alexandra Cavoulacos, a co-founder of the career site The Muse, who shared it in a Muse article and later in the book *The New Rules of Work*, written with Kathryn Minshew. It spread because it fits on a sticky note and its name is the whole explanation. People bend it to their own days, and Cavoulacos expected them to: busy days get fewer slots. ## How it works 1. Pick one big thing: a task that takes a good part of your day, like a first draft, a tricky repair or a long application. 2. Pick three medium things, about an hour each: preparing for a meeting, a call with some back and forth, a round of edits. 3. Pick five small things, ten or fifteen minutes each: a quick reply, a payment, a booking. 4. Write the nine down the evening before, or first thing in the morning. 5. When a slot is full, it's full. A new medium task means one of the three medium ones moves to another day. ## Why it works - **It makes you think about size.** Sorting tasks into big, medium and small is a quick, honest guess at how long they'll take. Most overplanning comes from skipping that guess. - With only one big slot, you can't fill a day with three huge goals and finish none. - The quick stuff gets five slots of its own, so it gets done without crowding out the work that matters. - On a light day you might do 1-3-5. On a busy one, 1-2-3. The shape stays the same. ## Where it falls short - Nine tasks is more than many people finish, once meetings, chores and children are in the mix. A list you never complete teaches you to ignore it. Start smaller. - A "small" task can open up into an hour. If that happens often, adjust your sizes. - The rule says what fits, not what to do first. Cavoulacos suggests getting the big one done before lunch; that's a good default. ## Fitting nine tasks into Plan's six Noodle's [Plan](https://www.noodleassistant.com/#plan) is built around the [Ivy Lee method](https://www.noodleassistant.com/blog/ivy-lee-method), so it has a soft limit of six tasks a day. Soft means Noodle never blocks you. When you type a seventh task, it asks "That's more than six for one day. Put it on another day?", and you can tap **Another day** or keep going. A day with nine tasks shows "9 of 6" in a warning color and asks "Move one to another day?" under the list. A full 1-3-5 day works, but Noodle will keep suggesting you trim it. Two ways to make the rule fit: - Batch the small ones. Five small tasks are often the same kind of thing. Group them into one task, like "Admin: pay the water bill, book the car inspection, reply to Ana". That makes 1-3-1, five lines in all. - Try 1-3-2: one big, three medium and two small, exactly six. Small tasks tend to get done anyway, list or no list. **Example: Today in Plan.** A 1-3-2 day at the six-task limit. One small task is already done. - [ ] Big: first draft of the grant budget - [ ] Medium: prepare for Thursday's site visit (Carried 1 day) - [ ] Medium: edit the newsletter (linked to the saved item "Notes from the October meeting") - [ ] Medium: call the insurer about the claim - [x] Small: pay the water bill - [ ] Small: book the car service > **Try it in Noodle** > > - Open Plan with the calendar button on Home. Add the big task first, then the medium ones, then the small ones. New tasks go to the bottom, so they line up by size. > - Start each task with "Big:", "Medium:" or "Small:". It's plain text, but it keeps the shape visible. > - To rearrange, hold the six-dot handle on the right of a task and drag it, or tap the task and choose **Move up** or **Move down**. > - To send a task on, tap it and choose **Move to another day**. Or tap **Another day** when Noodle asks about a seventh task. > - Anything not ticked off moves to tomorrow by itself, with "Carried 1 day" next to it. > **What Noodle doesn't do (yet)** > > Plan has no task sizes, estimates or durations, and nothing stops you putting three big tasks on one day. A size word at the start of each task, plus the order, is the closest you'll get. Plan has no times either, so it can't tell you whether nine tasks really fit in your day. ## Make it a habit - If you only decide one thing, decide the big one. That's close to the [daily highlight](https://www.noodleassistant.com/blog/daily-highlight). - Be strict with "medium". Anything over an hour and a half is probably big. - A big task showing "Carried 2 days" is too big for one day. Split it. - On Friday, scroll back through Plan's past days and count what you finished. Maybe your rule is 1-2-3. To see 1-3-5 next to the other methods, read [daily planning methods, compared](https://www.noodleassistant.com/blog/daily-planning-methods); the [Plan guide](https://www.noodleassistant.com/docs/plan) explains every button. --- Noodle Assistant is a free Android app that saves videos, posts, articles, photos, PDFs and voice notes, reads what is inside them, and finds them again when you describe them. Everything stays on the phone. Download: https://www.noodleassistant.com/download