The scoring formula (simple on purpose)

Each slider is rated from 1 to 10. Stress is inverted (because higher stress usually lowers mental energy). The final score is a weighted average, scaled to 0–100.

• Sleep quality: 22%
• Stress (inverted → calm): 20%
• Mental fatigue (inverted → freshness): 18%
• Focus: 16%
• Motivation: 14%
• Recovery: 10%

• Mood, stress and sleep tend to influence everything else.
• Energy and focus are common “day quality” signals.
• Connection matters, but varies by personality and context.

Frequently Asked Questions

• Is this a clinical assessment?

  No. It’s a self‑reflection tool designed for clarity and habit‑building. It is not a diagnosis.

• How often should I use it?

  Weekly is a good rhythm (Last 7 days). Daily can be useful if you’re tracking changes.

• Why is stress inverted?

  Because higher stress usually reduces mental energy. We convert it into a “calm score” for the final average.

• What if my score is very low?

  Treat it as a signal to slow down and support yourself. If you feel unsafe, hopeless, or in crisis, please contact local emergency services or a qualified professional.

Keep exploring (fast, practical, non‑clinical)

Jump to tools that pair well with a “mental battery” check:

How to use this responsibly

Use the score to notice trends, start conversations, or build small habits. Don’t use it to self‑diagnose. If you’re concerned about your mental health, a licensed professional can help you interpret what you’re experiencing.

• Run “Last 7 days” on the same day each week.
• Pick the lowest slider and choose one tiny action to improve it.
• Re‑check next week and look for direction, not perfection.

Mental Energy Meter: what it measures (and what it doesn’t)

Think of mental energy like a battery for attention, emotion regulation, and “getting started.” Some days your battery feels full and everything is easier: you can focus, make decisions, and recover after effort. Other days the battery feels low: even simple tasks feel heavy, you procrastinate, or you feel mentally foggy. This calculator turns that vague feeling into a single 0–100 snapshot so you can track patterns and make small, realistic adjustments.

Important: the Mental Energy Meter is not a clinical test. It does not diagnose depression, anxiety, ADHD, burnout, sleep disorders, or any health condition. It’s a self‑reflection tool designed to help you notice trends and choose one “lever” to improve. If you’re experiencing persistent distress, impairment, or safety concerns, consider speaking with a licensed professional.

Each slider is deliberately simple. You are not trying to be perfectly accurate — you are trying to be consistent. The best way to use this tool is to pick a timeframe (often “Last 7 days”), answer quickly, and repeat weekly.

• Sleep quality: How restorative your sleep feels. This isn’t just hours — it’s whether you wake up feeling “recovered.” Sleep quality tends to be one of the biggest predictors of mental stamina.
• Stress (inverted to calm): Stress is normal. The question is whether it’s a manageable “push” or an overloaded “pressure cooker.” In the score, higher stress becomes lower calm.
• Mental fatigue (inverted to freshness): Mental fatigue is the “drained” feeling after heavy thinking, emotional labor, constant switching, or nonstop notifications. Higher fatigue reduces your freshness score.
• Focus: Your ability to stay with one thing. Focus drops when you’re multitasking, sleep‑deprived, stressed, or mentally saturated.
• Motivation: Your willingness to start and keep going. Motivation often looks like “energy,” but it’s slightly different: you can be physically awake and still feel mentally unmotivated.
• Recovery: How well you bounce back after effort. Recovery is about pauses, decompression, and whether your day includes any genuine “off” moments.

Formula breakdown (the exact math)

Each slider is on a 1–10 scale. Two sliders are “reverse‑coded” because high values represent a drain: stress and mental fatigue. We convert them into helpful signals:

• Calm = 11 − Stress
• Freshness = 11 − Mental Fatigue

After that, we compute a weighted average. The weights intentionally favor the fundamentals (sleep and stress/calm). Here are the weights used:

• Sleep quality: 22%
• Calm (stress inverted): 20%
• Freshness (fatigue inverted): 18%
• Focus: 16%
• Motivation: 14%
• Recovery: 10%

The weighted result lands on a 1–10 range. We then scale to 0–100 using: Score = ((Weighted − 1) ÷ 9) × 100. This makes 1 map to 0, and 10 map to 100.

What your score means

The score is grouped into four simple bands. These are not labels — they’re just a quick interpretation to help you choose a next step.

• 80–100 (Charged): Your mental battery looks strong. Protect your basics so it stays that way.
• 65–79 (Steady): You’re okay. Pick one lever to improve by one point this week.
• 45–64 (Drained / fragile): Mixed signals. Reduce pressure where you can and rebuild stability.
• 0–44 (Low battery): Hard zone. Go gentle, prioritize rest and support, and consider reaching out if needed.

Worked examples

Sleep 7/10, Stress 9/10, Fatigue 6/10, Focus 6/10, Motivation 6/10, Recovery 5/10. Calm becomes 2/10 (11−9) and Freshness becomes 5/10 (11−6). The weighted average drops because stress is extremely high — even if sleep is decent. This is common during deadlines. Your “best move” is usually to reduce pressure and add short recovery blocks rather than trying to power through.

Sleep 8/10, Stress 4/10, Fatigue 3/10, Focus 7/10, Motivation 7/10, Recovery 8/10. Calm becomes 7/10 and Freshness becomes 8/10. You’ll likely land in the Steady or Charged range. The best strategy here is maintenance: keep routines, protect sleep, and avoid overbooking your calendar.

Sleep 5/10, Stress 6/10, Fatigue 8/10, Focus 4/10, Motivation 3/10, Recovery 4/10. Calm becomes 5/10 and Freshness becomes 3/10. This profile often shows up after long stretches of context switching, emotional stress, or poor sleep. A helpful approach is to choose one tiny “opening move” (2 minutes) and build momentum, while also creating a realistic recovery plan (early night, fewer meetings, lighter workload for 48–72 hours).

How to use this for “real life” improvement

A single score is less important than the trend. Here’s a practical way to use the Mental Energy Meter as a weekly system:

• Step 1: Pick a consistent day (Sunday night or Monday morning) and run “Last 7 days.”
• Step 2: Save the snapshot so you can see your pattern over time.
• Step 3: Identify the lowest slider (or the lowest converted signal: calm/freshness).
• Step 4: Choose one tiny action to improve that slider by one point next week.
• Step 5: Re‑check next week. Your goal is direction, not perfection.

If you want a viral “challenge” angle: try the 7‑Day Mental Battery Challenge. Run the meter daily, screenshot your score, and pick one lever to improve. People love simple streaks — and this encourages healthy behaviors without pretending to be medical advice.

FAQ (detailed)

• Is “mental energy” the same as motivation?

  Not exactly. Motivation is one part of mental energy. You can be motivated but depleted (pushing through), or rested but unmotivated (low interest, unclear goals). The meter combines multiple signals to avoid over‑focusing on any single feeling.

• Why do you invert stress and mental fatigue?

  Because in the raw inputs, higher numbers mean “more stress” and “more fatigue,” which usually reduce mental energy. Inverting turns them into positive contributors (calm and freshness) so the final score reads intuitively: higher is better.

• What timeframe should I use?

  “Last 7 days” is ideal for most people because it smooths out one‑off bad days. Use “Today” if you want a quick check before planning your day, and “Last 30 days” if you’re looking at a longer season (exam month, a new job, travel, etc.).

• What if my score is low but I feel fine?

  That can happen if your sliders capture strain you’re not consciously noticing yet (for example, poor recovery or constant stress). Treat it as a gentle prompt to protect rest and boundaries. If you still feel fine, great — you’ve probably built resilience.

• What if my score is high but I’m struggling?

  A number can’t capture everything. For example, grief, anxiety spikes, or health issues can be intense even with decent sleep and focus. If your lived experience doesn’t match the score, trust your experience. Consider using the score as one data point, not the truth.

• How can I raise my score fast?

  The fastest lever for many people is sleep consistency (bedtime window) and stress reduction (removing one demand). But “fast” still means days, not minutes. Choose a small move you can repeat, and you’ll usually see improvement within 3–7 days.

• Does caffeine affect mental energy?

  Caffeine can temporarily increase alertness, but it can also worsen sleep and anxiety for some people. If you notice your score is low, try improving the fundamentals first (sleep, recovery, stress) rather than relying on caffeine as the primary strategy.

Reminder: this tool is for educational self‑reflection only. It does not provide medical advice. If you feel unsafe or in crisis, contact local emergency services or a trusted professional right away.

Small actions that recharge a mental battery

If you’re not sure what to do next, pick one of these “low friction” actions. They’re intentionally tiny, because tiny actions are repeatable — and repeatable actions change trends.

• Walk outside (even around the block) and breathe slower than usual.
• Do a 2‑minute tidy of one surface (desk, counter) to lower background stress.
• Close all tabs; pick one next action; set a 10‑minute timer.
• Message one person “quick check‑in?” (connection reduces load).
• Hydrate + stretch your neck/shoulders (physical tension drains focus).

• Choose a bedtime window and protect it for 3 nights in a row.
• Move screens away 30 minutes before sleep.
• Write a 3‑line plan for tomorrow to reduce rumination.

Pro tip: If your score is low, aim to improve one slider by one point — not all six.