Free · Add a number field across records
JSON Total Calculator
Sum numbers from a JSON array without moving the data into a spreadsheet.
- Real JSONata 2.2 query
- Private in your browser
- Time and result safety caps
Calculate JSON total
Paste JSON, edit the JSONata expression, and run it locally with time, depth, and result limits.
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Add JSON and a queryBoth stay in this browser tab
Bounded local queryJSONata 2.2.2 · 800 ms timeout · $eval off
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See the resultReady when you are
Your query result will appear here
JSONata can filter, sort, group, calculate, and reshape the sample without an upload.
Three simple steps
How to use it
- Paste JSON with number fields.
- Point $sum at the number path.
- Use the total with the source context.
Your JSON stays on this device
JSONata reads and transforms the JSON inside this browser tab. Bookify does not upload or save the data or expression. Every run has time, sequence, stack, input, and output limits, and $eval stays disabled.