Workout Log

name: Workout Log description: "A workout logger with exercise entries, weekly volume chart, and streaks." category: fitness connections: [] version: 1

Purpose & behavior

A workout training log. Log any lift as exercise + sets × reps × weight (0 kg = bodyweight) with a date; history groups entries by day with per-day volume totals and one-click delete. A pure-CSS bar chart shows training volume across the last 7 days (today highlighted), stat cards show 7-day workouts, 7-day volume, current consecutive-day streak, and total logged entries, and a Personal Bests row highlights your heaviest lift per exercise.

Setup

Open app.html in any browser — no build step, no dependencies.
Entries persist in the browser via localStorage (key workoutLogV1).
Swap the fictional starter entries in the SAMPLE_W constant for your own, or delete them from the history list.

Source

app.html — the complete app (single self-contained file: HTML, CSS, and JavaScript, no external dependencies):

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Workout Log</title>
<style>
:root{
  --bg1:#161110; --bg2:#241a13;
  --card:#241c15; --brd:rgba(255,255,255,.09);
  --ink:#faf5ee; --muted:#a89c8b;
  --or:#f97316; --or2:#fb923c; --red:#ef4444; --grn:#4ade80;
  --r:16px; --sh:0 10px 28px rgba(0,0,0,.4);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:radial-gradient(1000px 600px at 85% -10%,#431407,transparent),
             radial-gradient(800px 500px at -10% 100%,#3b1d0e,transparent),
             linear-gradient(160deg,var(--bg1),var(--bg2));
  color:var(--ink);min-height:100vh;padding:28px 18px 60px;line-height:1.5}
.wrap{max-width:1020px;margin:0 auto}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.logo{font-size:22px;font-weight:800;letter-spacing:-.5px}
.logo span{background:linear-gradient(90deg,var(--or2),var(--red));-webkit-background-clip:text;background-clip:text;color:transparent}
.streak-pill{background:rgba(249,115,22,.12);border:1px solid rgba(249,115,22,.4);border-radius:999px;padding:8px 16px;font-size:14px;font-weight:700}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}
.card{background:var(--card);border:1px solid var(--brd);border-radius:var(--r);box-shadow:var(--sh);padding:22px}
.stat{text-align:center}
.stat .n{font-size:30px;font-weight:800;background:linear-gradient(90deg,#fff,var(--or2));-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stat .l{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-top:4px}
.grid2{display:grid;grid-template-columns:.95fr 1.05fr;gap:18px;margin-bottom:18px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}
.card h2{font-size:17px;margin-bottom:14px}
label{display:block;font-size:13px;font-weight:700;margin:12px 0 5px;color:var(--muted)}
input{width:100%;padding:11px 13px;border:1.5px solid rgba(255,255,255,.14);border-radius:12px;font-size:15px;font-family:inherit;background:rgba(0,0,0,.3);color:var(--ink)}
input:focus{outline:none;border-color:var(--or)}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.btn{border:none;border-radius:12px;padding:13px;font-size:15px;font-weight:800;cursor:pointer;width:100%;margin-top:16px}
.btn-p{background:linear-gradient(135deg,var(--or2),var(--or));color:#fff;box-shadow:0 6px 18px rgba(249,115,22,.4)}
.chart{display:flex;align-items:flex-end;gap:10px;height:190px;margin-top:6px}
.col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:6px;height:100%}
.cbar{width:100%;max-width:46px;border-radius:8px 8px 4px 4px;background:linear-gradient(180deg,var(--or2),var(--or));min-height:5px;transition:height .4s}
.col.today .cbar{background:linear-gradient(180deg,#fca5a5,var(--red));box-shadow:0 0 14px rgba(239,68,68,.5)}
.col .dl{font-size:11px;color:var(--muted);font-weight:700}
.col .vl{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}
.pbchips{display:flex;flex-wrap:wrap;gap:10px}
.pb{background:rgba(249,115,22,.1);border:1px solid rgba(249,115,22,.35);border-radius:12px;padding:10px 16px;font-size:13px}
.pb b{color:var(--or2);font-size:15px}
.day{margin-bottom:6px}
.day-h{display:flex;justify-content:space-between;align-items:baseline;margin:16px 2px 8px}
.day-h b{font-size:15px}
.day-h span{font-size:12px;color:var(--muted);font-weight:700}
.erow{display:flex;align-items:center;gap:12px;padding:11px 14px;background:rgba(0,0,0,.22);border:1px solid var(--brd);border-radius:12px;margin-bottom:8px}
.erow .en{flex:1;font-weight:700;font-size:14px}
.erow .dt{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.erow .vv{font-size:12px;color:var(--or2);font-weight:800;white-space:nowrap}
.del{background:none;border:none;color:var(--muted);font-size:18px;cursor:pointer;padding:2px 4px}
.del:hover{color:var(--red)}
.empty{text-align:center;color:var(--muted);padding:26px 0;font-size:14px}
.hint{font-size:12px;color:var(--muted);margin-top:12px}
</style>
</head>
<body>
<div class="wrap">
  <header>
    <div class="logo">🏋️ Workout <span>Log</span></div>
    <div class="streak-pill">🔥 <span id="streakTop">0</span>-day streak</div>
  </header>

  <div class="stats">
    <div class="card stat"><div class="n" id="sWk">0</div><div class="l">Workouts · 7 days</div></div>
    <div class="card stat"><div class="n" id="sVol">0</div><div class="l">Volume · 7 days (kg)</div></div>
    <div class="card stat"><div class="n" id="sStr">0</div><div class="l">Day streak</div></div>
    <div class="card stat"><div class="n" id="sTot">0</div><div class="l">Total logged</div></div>
  </div>

  <div class="grid2">
    <div class="card">
      <h2>Log a workout</h2>
      <form onsubmit="addEntry(event)">
        <label>Exercise</label>
        <input type="text" id="fEx" list="exlist" placeholder="e.g. Bench Press" required>
        <datalist id="exlist">
          <option value="Bench Press"><option value="Squat"><option value="Deadlift">
          <option value="Overhead Press"><option value="Barbell Row"><option value="Pull-up">
          <option value="Dumbbell Curl"><option value="Leg Press"><option value="Lunge">
        </datalist>
        <div class="row3">
          <div><label>Sets</label><input type="number" id="fSets" min="1" max="50" value="4" required></div>
          <div><label>Reps</label><input type="number" id="fReps" min="1" max="200" value="8" required></div>
          <div><label>Weight (kg)</label><input type="number" id="fWt" min="0" max="1000" step="0.5" value="60" title="0 = bodyweight"></div>
        </div>
        <label>Date</label>
        <input type="date" id="fDate">
        <button class="btn btn-p" type="submit">+ Log workout</button>
      </form>
      <div class="hint">Use 0 kg for bodyweight moves like pull-ups.</div>
    </div>
    <div class="card">
      <h2>Volume — last 7 days</h2>
      <div class="chart" id="chart"></div>
      <div class="hint" style="text-align:center">Total weight moved per day (sets × reps × kg)</div>
    </div>
  </div>

  <div class="card" style="margin-bottom:18px">
    <h2>🏆 Personal bests</h2>
    <div class="pbchips" id="pbs"></div>
  </div>

  <div class="card">
    <h2>History</h2>
    <div id="hist"></div>
  </div>
</div>
<script>
const LS='workoutLogV1';
const SAMPLE_W=[
  {id:1,date:'2026-09-15',ex:'Squat',sets:5,reps:5,wt:80},
  {id:2,date:'2026-09-15',ex:'Overhead Press',sets:4,reps:8,wt:40},
  {id:3,date:'2026-09-16',ex:'Bench Press',sets:4,reps:8,wt:60},
  {id:4,date:'2026-09-16',ex:'Barbell Row',sets:4,reps:10,wt:50},
  {id:5,date:'2026-09-18',ex:'Deadlift',sets:3,reps:5,wt:100},
  {id:6,date:'2026-09-18',ex:'Pull-up',sets:4,reps:10,wt:0},
  {id:7,date:'2026-09-19',ex:'Bench Press',sets:4,reps:6,wt:62.5},
  {id:8,date:'2026-09-20',ex:'Squat',sets:4,reps:8,wt:82.5},
  {id:9,date:'2026-09-21',ex:'Dumbbell Curl',sets:3,reps:12,wt:14}
];
const $=id=>document.getElementById(id);
const todayS=()=>new Date().toISOString().slice(0,10);
function esc(s){return String(s).replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));}
function blank(){return{entries:JSON.parse(JSON.stringify(SAMPLE_W)),nextId:10};}
let S;try{S=JSON.parse(localStorage.getItem(LS))||blank();}catch(e){S=blank();}
const save=()=>localStorage.setItem(LS,JSON.stringify(S));
const vol=e=>e.sets*e.reps*e.wt;
const dayVol=ds=>S.entries.filter(e=>e.date===ds).reduce((a,e)=>a+vol(e),0);
function last7(){const out=[];for(let i=6;i>=0;i--){const d=new Date(Date.now()-i*864e5);out.push(d.toISOString().slice(0,10));}return out;}
function streak(){const has=ds=>S.entries.some(e=>e.date===ds);let d=todayS();if(!has(d)){d=new Date(Date.now()-864e5).toISOString().slice(0,10);if(!has(d))return 0;}let n=0;while(has(d)){n++;d=new Date(new Date(d+'T12:00:00').getTime()-864e5).toISOString().slice(0,10);}return n;}
function pbs(){const m={};S.entries.forEach(e=>{if(e.wt>0&&(!m[e.ex]||e.wt>m[e.ex]))m[e.ex]=e.wt;});return Object.keys(m).map(k=>({ex:k,wt:m[k]})).sort((a,b)=>b.wt-a.wt).slice(0,6);}
function fmtD(ds){const p=ds.split('-');return new Date(+p[0],+p[1]-1,+p[2]).toLocaleDateString('en-US',{weekday:'short',month:'short',day:'numeric'});}
function fmtV(v){return v>=1000?((v/1000).toFixed(1)+'k'):String(Math.round(v));}
function addEntry(ev){ev.preventDefault();const ex=$('fEx').value.trim();if(!ex)return;const sets=Math.max(1,parseInt($('fSets').value,10)||1);const reps=Math.max(1,parseInt($('fReps').value,10)||1);const wt=Math.max(0,parseFloat($('fWt').value)||0);S.entries.push({id:S.nextId++,date:$('fDate').value||todayS(),ex:ex,sets:sets,reps:reps,wt:wt});$('fEx').value='';save();render();}
function delEntry(id){S.entries=S.entries.filter(e=>e.id!==id);save();render();}
function render(){
  const days=last7();
  const wk=S.entries.filter(e=>days.indexOf(e.date)>=0);
  $('sWk').textContent=wk.length;
  $('sVol').textContent=fmtV(wk.reduce((a,e)=>a+vol(e),0));
  $('sStr').textContent=streak();$('streakTop').textContent=streak();
  $('sTot').textContent=S.entries.length;
  const vols=days.map(dayVol),mx=Math.max.apply(null,vols.concat([1]));
  const WD=['S','M','T','W','T','F','S'];
  $('chart').innerHTML=days.map((ds,i)=>{
    const v=vols[i],h=Math.max(3,Math.round(v/mx*100));
    const dt=new Date(ds+'T12:00:00');
    const isT=ds===todayS();
    return '<div class="col'+(isT?' today':'')+'"><div class="vl">'+(v?fmtV(v):'')+'</div>'+
      '<div class="cbar" style="height:'+h+'%"></div>'+
      '<div class="dl">'+WD[dt.getDay()]+' '+dt.getDate()+'</div></div>';
  }).join('');
  const pb=pbs();
  $('pbs').innerHTML=pb.length?pb.map(p=>'<div class="pb">'+esc(p.ex)+' · <b>'+p.wt+' kg</b></div>').join(''):'<div class="empty">Log a weighted lift to set your first PB.</div>';
  const dates={};
  S.entries.forEach(e=>{(dates[e.date]=dates[e.date]||[]).push(e);});
  const dsKeys=Object.keys(dates).sort().reverse();
  $('hist').innerHTML=dsKeys.length?dsKeys.map(ds=>{
    const rows=dates[ds].map(e=>{
      const det=e.sets+' × '+e.reps+(e.wt>0?(' @ '+e.wt+' kg'):' · bodyweight');
      const vv=e.wt>0?(fmtV(vol(e))+' kg'):'—';
      return '<div class="erow"><span class="en">'+esc(e.ex)+'</span><span class="dt">'+det+'</span><span class="vv">'+vv+'</span><button class="del" onclick="delEntry('+e.id+')" title="Delete">×</button></div>';
    }).join('');
    return '<div class="day"><div class="day-h"><b>'+fmtD(ds)+'</b><span>'+fmtV(dayVol(ds))+' kg volume</span></div>'+rows+'</div>';
  }).join(''):'<div class="empty">No workouts logged yet.</div>';
}
$('fDate').value=todayS();
render();
</script>
</body>
</html>

Rebuild instructions

Create app.html as a single self-contained file: HTML + CSS + JavaScript, no external dependencies.
Style it as a dark athletic dashboard: near-black warm background, orange-to-red gradient accents, cards with subtle borders.
Define entries as {id,date,ex,sets,reps,wt} with volume = sets × reps × weight.
Build the log form (exercise text with datalist suggestions, sets, reps, weight, date defaulting to today) with basic validation.
Render stat cards (7-day workout count, 7-day volume, day streak, total entries), a 7-day CSS bar chart of daily volume, personal-best chips (max weight per exercise), and history grouped by date descending with delete buttons.
Compute the streak as consecutive days with at least one entry, counting back from today (or yesterday if today is empty).
Persist entries to localStorage on every change; seed from SAMPLE_W on first run.

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