Model infrastructure costs before you deploy — the Cloud VM / EC2 Instance Cost Calculator, Serverless / Lambda Cost Calculator, and Cloud Storage Cost Calculator cover compute and storage bills, while the SLA Uptime Percentage and Uptime / Downtime calculators translate nines into real minutes of acceptable downtime. The Data Center PUE Calculator benchmarks energy efficiency against industry targets.

The full list is ordered by how frequently cloud and DevOps teams use each tool. Open the Trending tab to see what's attracting attention right now — everything is free, needs no account, and works in any browser.

  • Cloud Egress vs CDN Savings Calculator
    Project your month-end cloud bill from month-to-date spend. Calculate daily burn rate, forecast total spend, and check it against your monthly budget.
  • Cloud Data Transfer / Egress Cost Calculator
    Estimate your cloud egress / data transfer bill. Enter GB transferred out, free tier allowance, and price per GB to see your billable cost instantly.
  • Server Power Consumption Cost Calculator
    Calculate the monthly and yearly electricity cost of running servers 24/7. Enter watts, price per kWh and server count to estimate power expenses.
  • Cloud VM / EC2 Instance Cost Calculator
    Estimate the monthly, daily and yearly cost of running cloud VMs or AWS EC2 instances from instance count, hourly rate and hours per month.
  • Serverless / Lambda Cost Calculator
    Estimate your monthly serverless function cost (AWS Lambda style) from requests, duration, memory and pricing per request and per GB-second.
  • SLA Uptime Percentage Calculator
    Calculate SLA uptime and availability percentage from downtime over any period. Convert minutes of outage into 99.9% style availability figures.
  • CDN Bandwidth Cost Calculator
    Estimate your monthly CDN bill from data transfer (GB) and HTTP requests. Enter price per GB and per million requests to see total and annual cost.
  • Reserved Instance vs On-Demand Savings Calculator
    Compare cloud Reserved Instance vs On-Demand pricing. Calculate your savings percentage, monthly savings, and total savings over a 1- or 3-year term.
  • Managed Database / RDS Cost Calculator
    Estimate monthly and annual cost of a managed database (RDS-style) from instance hourly price, storage GB, and provisioned IOPS.
  • Uptime / SLA Downtime Calculator
    Calculate allowed downtime for any SLA uptime percentage (99%, 99.9%, 99.99%) per day, week, month, quarter or year in seconds, minutes, hours and days.
  • Cloud Cost Savings Percentage Calculator
    Calculate the percentage you save on cloud costs after optimization. Enter your old and new monthly bills to see savings percentage and annual total.
  • Cloud Data Egress Cost Calculator
    Estimate cloud data egress (outbound transfer) charges. Enter GB transferred, free tier, and price per GB to see your billable data and total cost.
  • Cloud Data Storage Cost Calculator
    Estimate your cloud data storage costs. Enter storage size in GB, price per GB/month, and duration to get total, monthly, and annual cost.
  • Cloud Data Transfer Time Calculator
    Estimate how long it takes to upload or download data to/from the cloud based on file size in GB and connection bandwidth in Mbps.
  • Savings Plan vs On-Demand Calculator
    Compare cloud Savings Plan vs On-Demand pricing. Enter your on-demand cost and discount % to see monthly savings, effective cost, and annual savings.
  • BigQuery Cost Calculator
    Estimate your Google BigQuery monthly cost from data scanned per query, query volume, storage, and per-TB/per-GB pricing. Includes free tier.
  • S3 / Object Storage Request Cost Calculator
    Estimate monthly object storage costs from GET and PUT request counts plus stored GB. Works for AWS S3, GCS, Azure Blob, R2 and more.
  • Composite SLA / Combined Uptime Calculator
    Calculate combined SLA uptime for serial (dependent) or parallel (redundant) components. Get composite availability % and downtime per year, month and day.
  • SRE Error Budget Calculator
    Calculate your SLO error budget in minutes and how much downtime budget remains. Free SRE uptime and reliability error budget calculator.
  • Data Center PUE Calculator
    Calculate your data center's Power Usage Effectiveness (PUE) and DCiE from total facility power and IT equipment power. Free, instant efficiency results.
  • Cloud Storage Cost Calculator
    Estimate your monthly and yearly cloud storage bill from storage used, egress, and per-GB prices. Free cloud storage cost calculator.
  • Snowflake Credit Cost Calculator
    Estimate Snowflake warehouse compute cost from size, runtime hours and your credit price. See total credits used plus daily and monthly spend.
  • Uptime / Downtime Calculator
    Calculate allowed downtime for any SLA uptime percentage (99.9%, 99.99%, etc.) per day, week, month, or year — in days, hours, minutes & seconds.
  • Cloud Cost Hourly ↔ Monthly Converter
    Convert cloud instance pricing between hourly, monthly, and yearly. Uses 730 hours/month and 8760 hours/year. Scale by instance count instantly.

Frequently asked questions

What cloud infrastructure questions can these calculators answer?

You can estimate monthly costs for VMs, serverless functions, object storage, and CDN routing; translate SLA nines into annual downtime budgets; calculate data center power usage effectiveness; and model server electricity costs. It's a practical toolkit for architecture decisions, budget forecasting, and vendor comparisons.

How accurate are the cost estimates?

The calculators apply standard pricing formulas and typical market rate structures, useful for ballpark estimates and comparative analysis. Actual cloud bills depend on your provider's current pricing, reserved-instance discounts, and egress fees. Always confirm figures on your provider's pricing page and with a qualified financial or cloud architecture professional before committing to a budget.

Are any of the infrastructure details I enter logged or shared?

No. Every calculation runs locally in your browser. No server configurations, cost figures, or usage numbers are sent to our servers or stored anywhere.

Which cloud calculators do teams use most?

The Uptime / Downtime Calculator and SLA Uptime Percentage Calculator are consistently top-ranked, especially during SLA review cycles. The Cloud VM / EC2 Instance Cost Calculator and Cloud Storage Cost Calculator also see heavy use. The list is sorted by real usage; the Trending tab shows what's active right now.

Do I need to sign up or pay to use these tools?

No — everything in this section is completely free, with no account or subscription required. Works on any device with a modern browser.