Singapore UEN Generator & Validator
Generate and check format-valid Unique Entity Numbers across all three official formats. Useful for testing business-onboarding forms — all computation runs in your browser.
Generate
Format
For testing and development only. These are not real entities and must not be used to misrepresent any business. The trailing check letter is a random placeholder, not a computed checksum (see below).
Validate
The three UEN formats
- Business (pre-2009) 8 digits + check letter
53333444A - Local company year (4 digits) + 5 digits + check letter
201912345K - Other entity prefix + 2-digit year + entity code + 4 digits + check letter
T09LL0001B
ACRA does not publish the UEN check-letter algorithm, so this tool checks structure only — a passing result does not mean a UEN is real or registered. To look up a genuine entity, use the official ACRA BizFile directory.