Cloud Backup Storage Cost Calculator
ANA›Life Services Authority›National Calculator Authority›Cloud Backup Storage Cost 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; } }
Cloud Backup Storage Cost Calculator
Estimate your monthly and annual cloud backup storage costs based on raw data size, compression, redundancy, storage tier, and data transfer fees.
Raw Data Size (GB)
Total uncompressed data you want to back up
Compression Ratio
Typical ratio: 1.2 (low) to 3.0 (high). 1 = no compression
Redundancy / Replication Factor
Number of copies stored (e.g. 3 = triple redundancy)
Retention Period (months)
How long backups are kept (versioned snapshots accumulate)
Monthly Data Change Rate (%)
Percentage of data that changes each month (incremental backups)
Storage Price ($/GB/month)
AWS S3 Standard ~$0.023, Glacier ~$0.004, Azure ~$0.018, GCP ~$0.020
Monthly Data Retrieval / Egress (GB)
Data downloaded or restored per month
Egress Price ($/GB)
AWS/Azure/GCP typically charge $0.08–$0.09/GB for egress
Monthly API Requests (thousands)
PUT/GET/LIST requests for backup operations
API Request Price ($/1,000 requests)
AWS S3 PUT ~$0.005/1K, GET ~$0.0004/1K (use blended average)
Calculate
function cloCalc() { var resultDiv = document.getElementById("clo-result");
var rawData = parseFloat(document.getElementById("clo-raw-data").value); var compression = parseFloat(document.getElementById("clo-compression").value); var redundancy = parseFloat(document.getElementById("clo-redundancy").value); var retention = parseFloat(document.getElementById("clo-retention").value); var changeRate = parseFloat(document.getElementById("clo-change-rate").value); var storagePrice = parseFloat(document.getElementById("clo-storage-price").value); var egressGb = parseFloat(document.getElementById("clo-egress-gb").value); var egressPrice = parseFloat(document.getElementById("clo-egress-price").value); var apiReqs = parseFloat(document.getElementById("clo-api-requests").value); var apiPrice = parseFloat(document.getElementById("clo-api-price").value);
// Validation var errors = []; if (isNaN(rawData) || rawData 100) errors.push("Monthly Change Rate must be between 0 and 100."); if (isNaN(storagePrice) || storagePrice 0) { resultDiv.innerHTML = "Please fix the following:" + errors.map(function(e){ return ""; }).join("") + ""; return; }
/ * FORMULA: * * Step 1 — Compressed base size (GB): * compressedBase = rawData / compressionRatio * * Step 2 — Effective stored size with redundancy (GB): * baseStored = compressedBase × redundancyFactor * * Step 3 — Incremental data added per month (GB): * monthlyIncremental = compressedBase × (changeRate / 100) × redundancyFactor * * Step 4 — Total stored data accounting for retention (GB): * Retention accumulates incremental snapshots over the retention window. * totalStoredGB = baseStored + monthlyIncremental × (retentionMonths - 1) * (First full backup + (retention-1) incremental snapshots retained simultaneously) * * Step 5 — Monthly storage cost ($): * storageCost = totalStoredGB × storagePricePerGB * * Step 6 — Monthly egress cost ($): * egressCost = egressGB × egressPricePerGB * * Step 7 — Monthly API cost ($): * apiCost = apiRequestsThousands × apiPricePerThousand * * Step 8 — Total monthly cost ($): * monthlyTotal = storageCost + egressCost + apiCost * * Step 9 — Annual cost ($): * annualTotal = monthlyTotal × 12 /
var compressedBase = rawData / compression; var baseStored = compressedBase * redundancy; var monthlyIncremental = compressedBase * (changeRate / 100) * redundancy; var totalStoredGB = baseStored + monthlyIncremental * (retention - 1);
var storageCost = totalStoredGB * storagePrice; var egressCost = egressGb * egressPrice; var apiCost = apiReqs * apiPrice; var monthlyTotal = storageCost + egressCost + apiCost; var annualTotal = monthlyTotal * 12;
// Cost breakdown percentages var storagePct = monthlyTotal > 0 ? (storageCost / monthlyTotal * 100).toFixed(1) : 0; var egressPct = monthlyTotal > 0 ? (egressCost / monthlyTotal * 100).toFixed(1) : 0; var apiPct = monthlyTotal > 0 ? (apiCost / monthlyTotal * 100).toFixed(1) : 0;
function fmt(n) { return "$" + n.toFixed(2); } function fmtGB(n){ return n.toFixed(2) + " GB"; }
resultDiv.innerHTML = "### Results " + "" + "Compressed Base Size" + fmtGB(compressedBase) + "" + "Base Stored (with redundancy)" + fmtGB(baseStored) + "" + "Monthly Incremental Stored" + fmtGB(monthlyIncremental) + "" + "Total Stored Data (steady-state)" + fmtGB(totalStoredGB) + "" + "" + "Monthly Storage Cost (" + storagePct + "%)" + fmt(storageCost) + "" + "Monthly Egress Cost (" + egressPct + "%)" + fmt(egressCost) + "" + "Monthly API Cost (" + apiPct + "%)" + fmt(apiCost) + "" + "" + "Total Monthly Cost" + fmt(monthlyTotal) + "" + "Total Annual Cost" + fmt(annualTotal) + "" + "" + "Cost per GB stored: " + fmt(monthlyTotal / (totalStoredGB || 1)) + "/GB/month (all-in)
"; }
#### Formula
1. Compressed Base Size (GB): compressedBase = rawData ÷ compressionRatio
2. Base Stored with Redundancy (GB): baseStored = compressedBase × redundancyFactor
3. Monthly Incremental Data (GB): monthlyIncremental = compressedBase × (changeRate ÷ 100) × redundancyFactor
4. Total Stored Data — steady-state with retention (GB): totalStoredGB = baseStored + monthlyIncremental × (retentionMonths − 1) Represents one full backup plus (retention − 1) incremental snapshots held simultaneously.
5. Monthly Storage Cost: storageCost = totalStoredGB × storagePricePerGB
6. Monthly Egress Cost: egressCost = egressGB × egressPricePerGB
7. Monthly API Cost: apiCost = apiRequestsThousands × apiPricePerThousand
8. Total Monthly Cost: monthlyTotal = storageCost + egressCost + apiCost
9. Annual Cost: annualTotal = monthlyTotal × 12
#### Assumptions & References
- References: AWS S3 Pricing, Azure Blob Storage Pricing, GCP Cloud Storage Pricing.
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