Checkout Conversion Calculator
Measure the share of shoppers who reach checkout and go on to complete the order.
About Checkout Conversion Calculator
The checkout conversion rate is the share of checkouts started that orders completed 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
Checkout Conversion
Checkout Conversion Rate = Orders completed ÷ Checkouts started × 100
- Orders completed
- The subset being measured
- Checkouts started
- The full population it is drawn from
Worked example
With the default values below, Checkout Conversion Calculator returns Checkout Conversion Rate of 31.00%. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Orders completedminimum 0
- 3,100
- Checkouts startedminimum 0
- 10,000
Results
- Checkout Conversion Rate
- 31.00%
- Remaining (whole minus part)
- 6,900
- Equivalent per 1,000
- 310.0
- One in Every
- 3.2
Step by step
- 1Values used
- 2Checkout Conversion
- 3Checkout Conversion Rate= 31.00
- 4Remaining (whole minus part)= 6,900
- 5Equivalent per 1,000= 310.0
- 6One in Every= 3.2
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 Checkout Conversion calculated?
Checkout Conversion Rate = Orders completed ÷ Checkouts started × 100 The checkout conversion rate is the share of checkouts started that orders completed 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 Checkout 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: Orders completed, Checkouts started. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.