JSON Size Calculator
Estimate JSON payload size based on key count, value lengths, nesting depth, and array size. See minified and gzipped estimates.
Inputs
chars
chars
Results
Estimated Size
1.48 KB
Total Characters1,520
Minified Size1,064 chars
Gzipped Estimate~456 bytes
Objects per 1MB~690 per 1MB payload
Estimated Size
1.48 KB
How to Use This Calculator
- Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
- Keys Per Object — Number of key-value pairs. Accepts values from 1 to 1,000 (default: 10).
- Avg Key Length — Average length of JSON keys. Accepts values from 1 chars to 100 chars (default: 8 chars).
- Avg Value Length — Average length of JSON values. Accepts values from 1 chars to 1,000 chars (default: 15 chars).
- Nesting Depth — Depth of nested objects. Accepts values from 0 to 10 (default: 2).
- Array Size — Number of elements in the array. Accepts values from 1 to 10,000 (default: 5).
- Once all inputs are set, review your results in the Results panel. Here's what each output means:
- Estimated Size — your calculated result. This is the primary result of this calculator.
- Total Characters — shown as a numeric value.
- Minified Size — shown as a numeric value.
- Gzipped Estimate — your calculated result.
- Objects per 1MB — your calculated result.
- Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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