JSON Array & Object Counter Online
Count all arrays, objects, keys, and values inside any JSON structure. Our free JSON Counter gives you a quick statistical overview of your JSON data composition.
About JSON Array & Object Counter
Large JSON files can be overwhelming to understand at a glance. This tool analyzes your JSON and counts every object, array, key, and value type, giving you a quick statistical overview of your data structure without manual counting.
How it works
Paste your JSON into the input area and click Analyze. The tool recursively traverses every level of your structure, counting objects, arrays, keys, and primitive values (strings, numbers, booleans, and nulls).
Results appear as color-coded cards showing the count for each category. The statistics help you understand the composition of your JSON at a glance, useful for debugging and documentation.
When you'd use this
You received a large API response and need to understand its structure quickly. Run it through the counter to see how many objects and arrays you're dealing with before writing parsing code.
This tool counts elements but doesn't show their locations or paths. For detailed structural analysis, you'd need a JSON explorer or tree viewer that shows the full hierarchy.
Questions
What does the counter track?
It counts objects, arrays, keys, total values, strings, numbers, booleans, and null values. Each category appears as a separate card.
How are nested structures counted?
Every level is counted recursively. A nested object inside an array inside another object counts toward all three categories.
What counts as a value?
Every primitive (string, number, boolean, null) counts as a value. Objects and arrays contain values but aren't counted as values themselves.
Can I use this with arrays as root?
Yes, the tool works with any valid JSON including arrays at the root level. It will count all elements within the array.
Is there a size limit?
Very large JSON files may slow down your browser. For best performance, keep files under a few megabytes when analyzing.