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  3. CSV to JSON Converter

CSV to JSON Converter

Convert CSV data into JSON arrays locally.

🌐 Uses API
Also try:Historical Age Calculator·Pet Age Calculator·Relationship Timeline
Tips for CSV → JSON
  • First row is used as headers; remaining rows become objects with header keys.
  • Quoted fields support commas; double quotes inside are escaped by doubling them.
  • All values are treated as strings; you can coerce types after conversion if needed.
  • Tip: Use Reset to clear one side, or Reset all to clear both panels; use Pretty JSON to format JSON output.
  • Tip: Press Ctrl/Cmd + Enter in the CSV panel to convert instantly.
Pretty JSON
Frequently asked questions
Does CSV require a header row?
Yes. The first row is used as JSON keys.
Are quoted commas supported?
Yes. Basic quoted fields and escaped quotes ("") are handled.
Are files uploaded?
No. Conversion happens entirely in your browser.
Related tools
  • Historical Age Calculator
    See your age in different eras and calendars.
  • Pet Age Calculator
    Convert dog and cat years into human equivalents.
  • Relationship Timeline
    Track important dates and milestones together.
  • School Days Calculator
    Days until graduation or vacation by calendar.
Privacy
Most processing happens locally in your browser for speed & privacy. Network calls occur only for live rates or updates.
Premium
Premium feature
Historical analysis & trends
Track your past calculations and visualize patterns.
Calculation presets
Save, load, and manage your favorite calculation setups.
No presets saved yet.
Scenario planning
Compare multiple inputs side-by-side.
Batch processing
Upload a CSV to compute results in bulk.
Custom formulas
Create and reuse your own rules.
External data
Connect Google Sheets or an API as inputs.
By paying you agree to our  Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds
Free Tier Usage0/100 calculations today
Premium feature
Historical analysis & trends
Track your past calculations and visualize patterns.
Calculation presets
Save, load, and manage your favorite calculation setups.
No presets saved yet.
Scenario planning
Compare multiple inputs side-by-side.
Batch processing
Upload a CSV to compute results in bulk.
Custom formulas
Create and reuse your own rules.
External data
Connect Google Sheets or an API as inputs.
By paying you agree to our  Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds
CSV to JSON Converter | INSINEX Tools