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Free tools

10 free tools for better forms.

Every tool runs entirely in your browser — no signup, no upload, no paywall. Nothing you type ever leaves your device.

Survey design

Survey Sample Size Calculator
How many responses you actually need
NPS Calculator & Benchmark
Net Promoter Score with industry benchmarks
Likert Scale Generator
Balanced, correctly-labeled rating scales

Build & validate

Validation Pattern Generator
Copy-paste regex for any form field
QR Code Generator
Turn a form link into a scannable QR code
Consent & Disclosure Copy Generator
GDPR, CCPA, HIPAA & FERPA-aware consent text

Form quality

Form Readability Checker
Reading level + estimated completion time
Character & Word Counter
Live counts with form field-limit presets

Form data

CSV ⇄ JSON Converter
Convert data — or turn a spreadsheet into fields
Form Outline Builder
A recommended field list for any form type

These tools plan the form. SimilarForm builds it.

Show SimilarForm a URL, image, or PDF and it recreates the whole form — fields, layout, and branding — in under 30 seconds.

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