How is data transfer cost calculated?

First the volume is converted to GB (1 GB = 1000 MB). The free allowance is subtracted, and the remaining billable GB is multiplied by the price per GB. For example, 500 GB with a 100 GB free tier at 0.09 per GB costs (500 − 100) × 0.09 = 36.00.

Egress is outbound data leaving your cloud provider or CDN — for example, files downloaded by your users or responses sent from your API. Inbound data (ingress) is usually free; egress is the line item most providers charge for, which is what this tool estimates.

How accurate is the estimate?

It is accurate for a flat per-GB price, but many providers use tiered pricing, per-region rates and separate inbound/outbound charges. Use your provider's exact per-GB rate and free tier for the closest figure; the currency symbol is a label only and applies no exchange rate.

Does the free tier reset each month?

On most providers the free egress allowance resets at the start of each billing month, so enter the monthly free amount. The tool subtracts it once from the volume you enter, which represents a single month's transfer.

Why does the currency dropdown not change the number?

The currency selector only changes the symbol shown next to the result. No exchange rate is applied, so enter the price per GB in whatever currency your provider bills you in and the symbol simply labels the output.

Is my usage data sent anywhere?

No. The calculator is privacy-first and runs entirely in your browser — the figures you enter never leave your device.

Data Transfer Cost Calculator

Estimate what your data transfer (egress) will cost on a cloud host or CDN. It is for developers, ops teams and anyone sizing a hosting bill who needs a quick outbound-bandwidth figure before committing to a provider or scaling traffic up.

How it works

Providers bill outbound data per gigabyte and usually bundle a free monthly allowance, so the calculation is:

cost = (total GB − free GB) × price per GB

The tool first converts your volume to gigabytes using decimal units — MB ÷ 1000, GB ×1, TB ×1000 (1 GB = 1000 MB). It then subtracts the free allowance, clamps the billable amount at zero (so a volume under the free tier costs nothing), and multiplies the remaining billable GB by your price per GB. The currency selector is a display label only — no exchange rate is applied.

Example

500 GB of egress, a 100 GB free tier, at $0.09 per GB:

Total = 500 GB
Billable = 500 − 100 = 400 GB
Cost = 400 × 0.09 = $36.00

Input	Value
Volume	500 GB
Free allowance	100 GB
Billable	400 GB
Price per GB	$0.09
Cost	$36.00

Everything is calculated locally in your browser — nothing is sent anywhere.