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MailChimp

Mailchimp to Excel Converter

Export Mailchimp campaign data and subscriber lists to Excel for analysis.

  • 100% in your browser — nothing uploaded
  • No sign-up, no email
  • Handles 100 MB+ files
  • Open source
raw_data.json
Input: Nested JSON
{
  "orders": [
    {
      "id": "ORD-001",
      "customer": {
        "name": "Alex Chen",
        "email": "[email protected]"
      },
      "items": ["Laptop", "Mouse"],
      "total": 1299.99
    },
    {
      "id": "ORD-002",
      "customer": {
        "name": "Sarah Jones",
        "email": "[email protected]"
      },
      "items": ["Monitor"],
      "total": 349.50
    }
  ]
}
Flattening Nested Objects...
Output: Clean Table
4 Columns Found
IDCustomer NameItemsTotal
ORD-001Alex ChenLaptop, Mouse$1,299.99
ORD-002Sarah JonesMonitor$349.50
Done (0.02s)
No Data Upload
GDPR/HIPAA Compliant
Instant Processing
Free to Use
10,000+
Files Converted
500+
Business Analysts
100%
Private & Secure
1

Trusted by Ops Professionals

Join thousands of ops, support, and admin professionals who trust JsonExport for secure, fast JSON to Excel conversions

Saves 3 hours weekly

“I used to spend 3+ hours every week converting HubSpot JSON exports to Excel for my manager. JsonExport cut that down to 5 minutes. The auto-unescape feature handles our double-encoded data flawlessly.”

SK

Sarah K.

RevOps Manager at Fortune 500 Retail Company

HIPAA compliant

“Privacy was my #1 concern. Other tools required uploading patient data to their servers. JsonExport processes everything client-side, which means we're HIPAA compliant. Absolute game-changer for our team.”

MR

Michael R.

Salesforce Admin at Healthcare Analytics (2,500+ employees)

Auto-unescape magic

“Google Analytics JSON exports used to be a hassle to convert. Other tools either crash or require uploads to their servers. JsonExport's auto-unescape handles our double-encoded data flawlessly. Plus it's completely free!”

JT

Jennifer T.

Marketing Ops Manager at SaaS Startup

No coding required

“Converting Shopify order JSONs with nested line items used to be a nightmare. JsonExport's nested view makes it easy to see relationships, then export to flat Excel for reporting. No Python skills needed.”

DL

David L.

E-commerce Operations Lead at Mid-size Retail (500+ stores)

30 min → 2 min

“We pull Stripe transaction data daily. The timestamp conversion and metadata flattening features save me from writing custom scripts. What used to take 30 minutes now takes 2.”

RM

Rachel M.

Financial Administrator at Fintech Company

Frequently Asked Questions

Everything you need to know about converting JSON to Excel

Absolutely safe! JsonExport processes everything in your browser using JavaScript. Your data never leaves your computer - no uploads, no servers, 100% private.

Why use Mailchimp to Excel Converter?

Mailchimp API data includes nested campaign statistics, merge fields, and subscriber segments. Our converter flattens these into clean Excel tables for marketing analysis.

Native Support

Specifically tuned to handle the quirks and nested structures of Mailchimp JSON data.

Flatten campaign statistics and metrics
Extract subscriber merge fields
Handle segment and tag data
100% private — subscriber data stays local
MailChimpLive Transformation Architecture

How JsonExport Flattens Mailchimp Data

Trello Board Export with cards, lists, checklists, custom fields, and power-up plugins. Nested objects and complex arrays are unpacked into clean spreadsheet columns automatically.

Before: Raw Mailchimp Nested JSON
{
  "id": "64f1a2b3c4d5e6f7a8b9c0d1",
  "name": "Product Sprint 2026",
  "desc": "Q3 Engineering & Design Sprint",
  "closed": false,
  "lists": [
    {
      "id": "list_01",
      "name": "In Progress",
      "closed": false,
      "pos": 1
    },
    {
      "id": "list_02",
      "name": "Ready for QA",
      "closed": false,
      "pos": 2
    },
    {
      "id": "list_03",
      "name": "Done",
      "closed": false,
      "pos": 3
    }
  ],
  "customFields": [
    {
      "id": "cf_tier",
      "name": "Client Tier",
      "type": "list",
      "options": [
        {
          "id": "opt_ent",
          "value": {
            "text": "Enterprise"
          }
        },
        {
          "id": "opt_std",
          "value": {
            "text": "Standard"
          }
        }
      ]
    }
  ],
  "cards": [
    {
      "id": "card_101",
      "name": "Implement D1 SQLite Telemetry Worker",
      "desc": "Zero-cost telemetry endpoint for conversion stats",
      "idList": "list_01",
      "listName": "In Progress",
      "due": "2026-08-30T17:00:00.000Z",
      "dueComplete": false,
      "labels": [
        {
          "id": "lbl_1",
          "name": "Backend",
          "color": "blue"
        },
        {
          "id": "lbl_2",
          "name": "Priority",
          "color": "red"
        }
      ],
      "checklists": [
        {
          "id": "chk_1",
          "name": "Tasks",
          "checkItems": [
            {
              "id": "item_1",
              "name": "Create schema.sql",
              "state": "complete"
            },
            {
              "id": "item_2",
              "name": "Wrangler binding",
              "state": "complete"
            },
            {
              "id": "item_3",
              "name": "CLI pull script",
              "state": "incomplete"
            }
          ]
        }
      ],
      "members": [
        {
          "id": "mem_1",
          "fullName": "Alex Developer",
          "username": "alexdev"
        }
      ],
      "customFieldItems": [
        {
          "idCustomField": "cf_tier",
          "idValue": "opt_ent"
        }
      ],
      "pluginData": [
        {
          "id": "pd_01",
          "idPlugin": "github_sync",
          "scope": "card",
          "value": "{\"prNumber\":42,\"branch\":\"feature/telemetry\"}"
        }
      ]
    },
    {
      "id": "card_102",
      "name": "Design Platform Visual Transform Assets",
      "desc": "Authentic before/after SVG graphics for all converters",
      "idList": "list_02",
      "listName": "Ready for QA",
      "due": "2026-08-29T12:00:00.000Z",
      "dueComplete": true,
      "labels": [
        {
          "id": "lbl_3",
          "name": "Design",
          "color": "purple"
        }
      ],
      "checklists": [],
      "members": [
        {
          "id": "mem_2",
          "fullName": "Jordan UI",
          "username": "jordan_ui"
        }
      ]
    }
  ]
}
After: Flattened Excel (.xlsx) Columns
Clean Dot-Notation Columns
assignedMembersattachments.countboardNamechecklistItemschecklistProgresschecklistsSummary
Alex Developer0Product Sprint 2026[x] Create schema.sql [x] Wrangler binding [ ] CLI pull script2/3Tasks (2/3)
Jordan UI0Product Sprint 2026
Zero [object Object] errors

Specific Questions

How do I export Mailchimp contacts to Excel?

Use the Mailchimp API to export your audience as JSON, then paste it here for instant Excel conversion.

Does this handle merge fields?

Yes. All merge fields (FNAME, LNAME, custom fields) are automatically extracted into separate columns.

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Worked examples and realistic test payloads for this workflow.