{
    "name": "Cloud Egress Cost Calculator",
    "url": "https://calculators.geekmidst.com/calculators/cloud-egress-cost-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/cloud-egress-cost-calculator.md",
    "category": "IT, networking & security",
    "description": "Work out the monthly cost of data transferred out of a cloud provider with a free allowance and tiered per-GB prices that you enter from your provider’s price list.",
    "summary": "Cloud providers usually charge for data leaving their network in tiers: a free allowance, then a price per GB that falls as volume rises. Enter your provider’s current tiers; the defaults are examples only.",
    "also_called": [
        "Data transfer out cost calculator",
        "Egress fee calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "gb",
            "label": "Data transferred out this month",
            "type": "number",
            "default": "15000",
            "unit": "GB"
        },
        {
            "name": "free_gb",
            "label": "Free allowance",
            "type": "number",
            "default": "100",
            "unit": "GB",
            "optional": true
        },
        {
            "name": "tier1_gb",
            "label": "Tier 1: next",
            "type": "number",
            "default": "10240",
            "unit": "GB"
        },
        {
            "name": "tier1_price",
            "label": "Tier 1 price per GB",
            "type": "number",
            "default": "0.09"
        },
        {
            "name": "tier2_gb",
            "label": "Tier 2: next",
            "type": "number",
            "default": "40960",
            "unit": "GB",
            "optional": true
        },
        {
            "name": "tier2_price",
            "label": "Tier 2 price per GB",
            "type": "number",
            "default": "0.085",
            "optional": true
        },
        {
            "name": "tier3_price",
            "label": "Price per GB beyond tier 2",
            "type": "number",
            "default": "0.07"
        },
        {
            "name": "currency",
            "label": "Currency",
            "type": "currency",
            "default": "USD"
        }
    ],
    "outputs": [
        {
            "key": "cost",
            "label": "Egress cost this month",
            "format": "currency"
        },
        {
            "key": "billable_gb",
            "label": "Billable GB",
            "format": "number"
        },
        {
            "key": "free_used_gb",
            "label": "Free allowance used",
            "format": "number"
        },
        {
            "key": "effective_per_gb",
            "label": "Effective cost per GB",
            "format": "decimal4"
        },
        {
            "key": "annual_cost",
            "label": "Annual cost at this volume",
            "format": "currency"
        }
    ],
    "formula": {
        "text": "Billable = max(0, GB − Free);  Cost = min(Billable, T1) × P1 + min(remaining, T2) × P2 + remaining × P3",
        "variables": {
            "T1, T2": "sizes of the first and second tiers in GB",
            "P1, P2, P3": "price per GB in each tier"
        }
    },
    "worked_example": {
        "inputs": {
            "gb": "15000",
            "free_gb": "100",
            "tier1_gb": "10240",
            "tier1_price": "0.09",
            "tier2_gb": "40960",
            "tier2_price": "0.085",
            "tier3_price": "0.07",
            "currency": "USD"
        },
        "steps": [
            "Billable = 15,000 − 100 free = 14,900 GB.",
            "Tier 1: 10,240 × $0.09 = $921.60.",
            "Tier 2: the remaining 4,660 × $0.085 = $396.10, so the total is $1,317.70."
        ],
        "result": "Sending 15,000 GB out with these example tiers costs $1,317.70 a month, about $0.0878 per GB."
    },
    "interpretation": "Egress is often the hidden cost in multi-cloud and hybrid designs. A CDN, caching or keeping chatty services in the same region can cut it more than negotiating rates.",
    "assumptions": [
        "Tiers apply to the month’s total volume in order after the free allowance."
    ],
    "limitations": [
        "Inter-region, inter-zone, CDN and private-link transfers are usually priced differently; calculate each separately.",
        "Taxes are not included."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Is inbound data free?",
            "answer": "With most large providers, data transfer in is free or very cheap, but check your provider’s price list."
        },
        {
            "question": "Do tiers reset each month?",
            "answer": "Usually yes: tier thresholds apply to the volume in each billing month."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "SIEM Ingest Cost Calculator",
            "url": "https://calculators.geekmidst.com/calculators/siem-ingest-cost-calculator"
        },
        {
            "name": "Website Bandwidth Calculator",
            "url": "https://calculators.geekmidst.com/calculators/bandwidth-calculator"
        },
        {
            "name": "VPN Bandwidth Estimate Calculator",
            "url": "https://calculators.geekmidst.com/calculators/vpn-bandwidth-estimate-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}