Surface Cleaning Time Estimator
ANA›Life Services Authority›National Calculator Authority›Surface Cleaning Time Estimator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Surface Cleaning Time Estimator
Estimate the time required to clean a surface based on area, soil level, cleaning method, and number of workers.
Surface Area (m²)
Soil Level
Light (dust, minor smudges) Moderate (everyday dirt, grease) Heavy (stubborn stains, grime) Extreme (industrial, post-construction)
Cleaning Method
Machine / Power Scrubber Standard Mop / Cloth Hand Scrubbing Pressure Washing
Number of Workers
Obstacle Factor
None (open space) Low (few items) Medium (furniture, equipment) High (cluttered / complex layout)
Calculate Fill in the fields above and click Calculate.
function surCalc() { var resultDiv = document.getElementById('sur-result');
var area = parseFloat(document.getElementById('sur-area').value); var soil = parseFloat(document.getElementById('sur-soil').value); var method = parseFloat(document.getElementById('sur-method').value); var workers = parseInt(document.getElementById('sur-workers').value); var obstacles = parseFloat(document.getElementById('sur-obstacles').value);
// --- Validation --- if (isNaN(area) || area ⚠ Please enter a valid surface area greater than 0.'; return; } if (isNaN(workers) || workers ⚠ Number of workers must be at least 1.'; return; } if (area > 100000) { resultDiv.innerHTML = '⚠ Surface area seems unrealistically large. Please check your input.'; return; } if (workers > 500) { resultDiv.innerHTML = '⚠ Number of workers seems unrealistically large. Please check your input.'; return; }
/ * Base cleaning rate (m² per minute) for a single worker using standard method * on a lightly soiled, obstacle-free surface: BASE_RATE = 0.833 m²/min (~50 m²/hr) * * Formula: * raw_time (min) = (area × soil_factor × method_factor × obstacle_factor) / BASE_RATE * adjusted_time = raw_time / workers * * Where: * soil_factor — multiplier for how dirty the surface is (1.0 – 3.0) * method_factor — multiplier for cleaning method efficiency (0.6 – 1.3) * obstacle_factor— multiplier for layout complexity (1.0 – 1.6) * BASE_RATE = 0.833 m²/min (industry standard for light mopping) /
var BASE_RATE = 0.833; // m² per minute
var rawTime = (area * soil * method * obstacles) / BASE_RATE; var adjustedTime = rawTime / workers;
var hours = Math.floor(adjustedTime / 60); var minutes = Math.round(adjustedTime % 60);
// Format readable time string var timeStr = ''; if (hours > 0 && minutes > 0) { timeStr = hours + ' hr ' + minutes + ' min'; } else if (hours > 0) { timeStr = hours + ' hr'; } else { timeStr = minutes + ' min'; }
// Efficiency note var effNote = ''; if (workers > 1) { effNote = 'Note: Parallel efficiency assumed at 100%. Real-world coordination may add 5–15% overhead for teams larger than 3.'; }
resultDiv.innerHTML = 'Estimated Cleaning Time: ' + timeStr + '' + 'Total raw time (single worker): ' + Math.round(rawTime) + ' min' + 'Adjusted for ' + workers + ' worker(s): ' + Math.round(adjustedTime) + ' min' + effNote; }
#### Formula
Raw Time (min) = (Area × Soil Factor × Method Factor × Obstacle Factor) ÷ Base Rate Adjusted Time (min) = Raw Time ÷ Number of Workers Where Base Rate = 0.833 m²/min (~50 m²/hr), representing a single worker performing standard mopping on a lightly soiled, open surface.
#### Assumptions & References
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