Free Developer Tool · FHIR R4

Convert CSV to FHIR — Free

Upload a CSV. Map your fields. Get validated FHIR R4 JSON in minutes. No coding. No integration project. No credit card.

Convert CSV to FHIR — Free
CSV → FHIR R4 · Visual Mapping · Validation · JSON Export
10,000 healthcare records free
FHIR R4 standards-based output
$0 credit card required
app.hipaas.com/fhirflo
CSV patients.csv
Patient ID First Name Last Name Gender
10001 John Smith M
10002 Mary Jones F
10003 Alex Kim M
JSON FHIR R4 Patient Validated 
{
  "resourceType": "Patient",
  "id": "10001",
  "name": [{
    "given": ["John"],
    "family": "Smith"
  }],
  "gender": "male"
}
FHIR validation passed Patient / 10001
Fields auto-mapped 8 of 9 fields matched
CSV → FHIR Converter

From source data to FHIR R4 in five steps.

Stop building one-off transformation scripts. Use a clear conversion workflow your developers, analysts, and interoperability teams can understand.

01

Upload CSV

Bring source healthcare data into the converter securely.

02

Select Resource

Choose the FHIR R4 resource that matches the dataset.

03

Map Fields

Review source-to-FHIR field mappings before conversion.

04

Validate

Identify missing values, mapping issues, and structure errors.

05

Download JSON

Export clean FHIR JSON for APIs, testing, or downstream workflows.

Interactive Product Experience

See how the CSV → FHIR workflow works.

Step 1

Upload healthcare CSV

CSV
patients.csv 3 records · 4 fields
Step 2

Select target FHIR resource

Step 3

Review field mappings

✦ Suggested mappings
Source CSV field FHIR R4 path Status
Suggested mappings are ready

FHIRFlo can recommend common source-to-FHIR mappings. Your team can review and adjust them before conversion.

Step 4

Validation results

✓
FHIR validation passed

Your sample records can be represented as FHIR R4 Patient resources.

100% ready
JSON structure Output is well formed
Required fields Core values available
FHIR resource Patient R4
FHIR R4 JSON Preview 

          


          

            

            
          

        


        
        

          

            
              
            

            Step 5
            
Your FHIR JSON is ready


            

              Download the generated sample resource and continue testing your FHIR workflow.
            


            

            
          

        


      

    


  




    
    

      


        

          Built for Developers

          

            FHIR conversion without building a FHIR mapping engine.
          


          

            Stop writing custom CSV-to-FHIR transformation code for every project.
            Move from source data to structured FHIR resources through one repeatable workflow.
          


          
    
            
  • 
              ✓
              
    
                Upload CSV files
                Start with common healthcare flat-file exports.
              
    
            
    • 

            
  • 
              ✓
              
    
                Detect source fields
                Identify incoming columns before mapping.
              
    
            
    • 

            
  • 
              ✓
              
    
                Map fields to FHIR resources
                Review suggested FHIR R4 paths without writing transformation code.
              
    
            
    • 

            
  • 
              ✓
              
    
                Validate FHIR resources
                Surface mapping and structure issues before export.
              
    
            
    • 

            
  • 
              ✓
              
    
                Download FHIR JSON
                Use generated resources in APIs, apps, testing, and integrations.
              
    
            
    • 
          

        


        

          

            
            fhirflo-conversion.log
          


          

            
01Reading patients.csv

            
02✓ 9 source fields detected

            
03✓ Resource selected: Patient

            
04✓ 8 fields auto-mapped

            
05! 1 field requires review

            
06✓ FHIR JSON generated

            
07✓ Validation completed

            
08Ready to download →

          

        


      

    


    
    

      


        

          Common FHIR Resources

          

            One converter. Multiple FHIR R4 resources.
          


          

            Start with common resources used by digital health teams,
            interoperability engineers, payers, providers, and healthcare startups.
          

        


        

          Patient
          Practitioner
          Organization
          Observation
          Encounter
          Condition
          Medication
          AllergyIntolerance
          Procedure
          DiagnosticReport
        

      

    


    
    

      

        


          

            Free FHIR Converter

            

              Convert your first
              10,000 healthcare records free.
            


            

              Convert CSV → FHIR R4. Validate your output. No credit card required.
            

          


          
            Start converting free