Free hourly energy log

Energy Level Logger

Log your energy from 1 to 10 in one tap, watch today's readings as a bar chart, and see your average energy by hour of day.

6

Today's entries

Ordered by time logged.

Average energy by hour of day

Across all history you've logged, grouped by hour.

Why log energy by the hour

Energy doesn't stay flat through the day, but most people only notice the extremes — a slump so bad they nap, or a burst so good they overcommit. Logging regularly makes the pattern in between visible.

Multiple logs per day

Log as often as you like — morning, after lunch, mid-afternoon — to capture real swings, not just one snapshot.

Automatic timestamps

Every entry is timestamped the moment you log it, so today's chart and the hourly average build themselves.

Find your low hour

The 24-hour average chart makes a recurring afternoon dip or morning slump obvious across weeks of data.

How to use the energy level logger

  1. Set your levelDrag the slider to match your energy right now, from 1 (drained) to 10 (highly energized).
  2. Log itSelect Log energy now. The entry is timestamped automatically and added to today's chart.
  3. Check the hourly chartAfter a few days of varied logging, the 24-hour average chart starts showing your real pattern.

About energy tracking and the afternoon dip

Most people's energy isn't a flat line and isn't random either — it tends to follow a rough daily rhythm shaped by sleep, meals and circadian biology, with a well-documented dip in the early-to-mid afternoon for a lot of people, roughly the window a couple of hours after lunch. The trouble is that a single day's experience is a noisy way to detect that pattern, because one bad night's sleep or one stressful meeting can make any hour look low. Logging energy repeatedly, across many days and at varied times, is what turns noise into signal: the hourly average chart on this page pools every entry you've ever logged by the hour it happened in, so a real recurring dip shows up as a genuine low bar even though any single day contributing to it might look different. This is also why the tool allows unlimited entries per day rather than one — a single daily check-in can tell you how a day felt on average, but only several check-ins spread across the day can tell you when within that day your energy actually changes. Once a pattern is visible, the practical use is straightforward: schedule demanding work for your typical high-energy hours and protect your low hours for lighter tasks or a short break.

Log at varied times

Logging only every morning will never reveal an afternoon pattern — spread entries across the day.

Give it a couple weeks

A day or two of data is noisy. A consistent pattern usually needs at least one to two weeks of logging.

Plan around your dip

Once you spot a low hour, protect it for breaks or light tasks instead of demanding focus work.

Energy level logger FAQ

How many times a day can I log my energy?

As many times as you like. Each log is timestamped automatically, so logging energy several times a day, such as morning, afternoon and evening, builds a more useful picture than one entry.

What does today's bar chart show?

It shows every entry you've logged today, ordered left to right by the time you logged it, with bar height matching the energy level you recorded.

How is the by-hour average calculated?

Every entry you've ever logged, across all days, is grouped by the hour of the day it happened in. Each of the 24 bars shows the average energy level for that hour across your full history.

How much history do I need before the hourly chart is useful?

A handful of entries will show something, but patterns like a consistent afternoon dip become clearer after a week or two of logging at varied times of day.

Is my energy data private?

Yes. All entries are stored only in your browser's local storage. Nothing is uploaded to a server, and no account is required.

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