THE NUMBERS, EXPLAINED
How to use this calculator.
Positive integer IDs represent a supplied component inventory. Verification quality and the appropriateness of reduced-motion behavior are external.
Start with your inputs
Enter animated component ids, ids with verified reduced-motion variants. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Animated component IDs | 1,2,3 |
| IDs with verified reduced-motion variants | 1,3 |
A worked example
With the example inputs above, animated component ids missing a verified variant is 2. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Animated component IDs missing a verified variant | 2 |
| Verified preference coverage (%) | 66.666667 |
| Variant IDs without an animated inventory entry |
How this is calculated
Animated component IDs missing a verified variant
Find animated component IDs absent from the verified-variant inventory.
Verified preference coverage (%)
Divide covered animated components by all animated components.
Variant IDs without an animated inventory entry
Find orphan variant records.
Symbols and units
- a
- Animated component IDs
- b
- IDs with verified reduced-motion variants
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Positive integer IDs represent a supplied component inventory. Verification quality and the appropriateness of reduced-motion behavior are external.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Animated component IDs missing a verified variant; Verified preference coverage (%); Variant IDs without an animated inventory entry. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Positive integer IDs represent a supplied component inventory. Verification quality and the appropriateness of reduced-motion behavior are external.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
W3C Technique C39: prefers-reduced-motion ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →