Strength of Schedule Calculator
ANA›Life Services Authority›National Calculator Authority›Strength of Schedule Calculator
.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; } }
Strength of Schedule Calculator
Calculate the Strength of Schedule (SOS) for a team based on the win-loss records of its opponents. A higher SOS indicates a more difficult schedule.
Number of Opponents (1–16)
Calculate Enter opponent records above and click Calculate.
(function() { // Render opponent input rows window.sos_renderOpponents = function() { var n = parseInt(document.getElementById('sos_num_opponents').value); if (isNaN(n) || n 16) n = 16; var container = document.getElementById('sos_opponents_container'); var existing = container.querySelectorAll('.sos-opp-row'); var currentCount = existing.length;
// Add rows if needed for (var i = currentCount; i Opponent ' + (i+1) + '' + '' + 'Wins' + '' + '' + '' + 'Losses' + '' + '' + '' + 'Ties (optional)' + '' + ''; container.appendChild(row); }
// Remove extra rows var allRows = container.querySelectorAll('.sos-opp-row'); for (var j = allRows.length - 1; j >= n; j--) { container.removeChild(allRows[j]); } };
window.sos_calc = function() { var resultDiv = document.getElementById('sos_result'); var n = parseInt(document.getElementById('sos_num_opponents').value); if (isNaN(n) || n 16) { resultDiv.innerHTML = 'Please enter a valid number of opponents (1–16).'; return; }
var opponents = []; var errors = [];
for (var i = 0; i 0) { resultDiv.innerHTML = '' + errors.join('') + ''; return; }
if (opponents.length === 0) { resultDiv.innerHTML = 'No valid opponent data entered.'; return; }
// SOS = average of opponents' win percentages var sumWinPct = 0; for (var k = 0; k = 0.600) rating = 'Very Strong'; else if (sos >= 0.500) rating = 'Strong'; else if (sos >= 0.400) rating = 'Average'; else if (sos >= 0.300) rating = 'Weak'; else rating = 'Very Weak';
// Build breakdown table var rows = ''; for (var m = 0; m 0 ? '-' + o.t : ''); rows += '' + o.label + '' + record + '' + o.games + '' + (o.winPct * 100).toFixed(1) + '%'; }
resultDiv.innerHTML = '### Results ' + '' + '' + 'Opponent' + 'Record (W-L-T)' + 'Games' + 'Win %' + '' + '' + rows + '' + '' + 'Number of Opponents: ' + opponents.length + '
' + 'Sum of Opponent Win Percentages: ' + (sumWinPct * 100).toFixed(2) + '%
' + 'Strength of Schedule (SOS): ' + (sos * 100).toFixed(2) + '% | ' + rating + '
'; };
// Initialize on load sos_renderOpponents(); })();
#### Formula
Opponent Win Percentage:
Win% = (Wins + 0.5 × Ties) / (Wins + Losses + Ties)
Strength of Schedule (SOS):
SOS = (Σ Opponent Win%) / Number of Opponents
The result is expressed as a percentage. A higher SOS means the team faced tougher competition.
Rating Scale:
#### Assumptions & References
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