Website Conversion Calculator

Calculate site-wide conversion rate across all traffic sources and entry points.

About Website Conversion Calculator

The website conversion rate is the share of total website sessions that goal completions represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small. Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where higher is better.

Formula

Website Conversion

Website Conversion Rate = Goal completions ÷ Total website sessions × 100

Goal completions: The subset being measured
Total website sessions: The full population it is drawn from

Worked example

With the default values below, Website Conversion Calculator returns Website Conversion Rate of 1.32%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Goal completionsminimum 0: 1,250
Total website sessionsminimum 0: 95,000

Results

Website Conversion Rate: 1.32%
Remaining (whole minus part): 93,750
Equivalent per 1,000: 13.2
One in Every: 76.0

Step by step

1Values used
2Website Conversion
3Website Conversion Rate= 1.32
4Remaining (whole minus part)= 93,750
5Equivalent per 1,000= 13.2
6One in Every= 76.0

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Website Conversion calculated?

Website Conversion Rate = Goal completions ÷ Total website sessions × 100 The website conversion rate is the share of total website sessions that goal completions represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small.

Why does Website Conversion matter?

Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where higher is better.

What values do I need to enter?

This calculator takes 2 inputs: Goal completions, Total website sessions. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.