Spoon Calculator

How the spoon calculator works

Spoon theory, created by Christine Miserandino in 2003, pictures energy as a handful of spoons. Every task costs some, and when they are gone, they are gone. The calculator does the counting in four steps.

1. Budget: your energy rating times 2.4, rounded to a whole spoon. Energy 5 gives 12 spoons; energy 8 gives 19.
2. Adjustments: short sleep, lower heart rate variability (HRV) or a raised resting heart rate make each activity cost more. When more than one applies, the multipliers multiply, and costs round to the nearest quarter spoon.
3. Activities: each one starts from an example cost you can change. A rest break gives one spoon back.
4. Reserve: one spoon is kept back for the unexpected. If the plan goes over budget, it is marked as a crash risk so you can move, shorten or drop something.

For example, you rate your energy 6 after 5.5 hours of sleep. Your budget is 14 spoons (6 × 2.4 = 14.4, rounded) and every cost is multiplied by 1.25: getting dressed costs 1.25, a shower 2.5, a simple meal 2.5 and an appointment 5. With one rest break, that is 10.25 spoons planned and 3.75 left, including your reserve.

Where the numbers come from

The starting rule and the multipliers come from Juno’s technical white paper, Personalized pacing with Juno (version 1.0, 21 September 2026). In the paper, the budget and the cost of each activity go on to learn from a person’s own records. Those learning parts are a development prototype, not a clinical tool, and this calculator does not use them: it applies only the fixed starting rule and the published multipliers.

It is a planning aid, not medical advice. A higher budget is never an instruction to do more, and spoons you have left do not have to be spent. If your energy or symptoms are changing, talk to your clinician. To see how pacing works in the app, read energy pacing with Juno.