SFID
Salesforce ID Converter (15 ↔ 18)
Convert 15-character Salesforce IDs to 18-character with checksum, or validate an 18-char ID. Browser-only.
Runs entirely in your browser · Your input is never transmitted
INPUT · 15 or 18 char IDs
0 IDsReady
OUTPUT · 18 char
Ready—
How to use
- Paste one or more 15- or 18-char Salesforce IDs (one per line).
- Conversion is automatic.
- Copy the padded results.
Frequently asked
Why convert 15 to 18?
Salesforce stores IDs as 15-char case-sensitive internally, but APIs and tools often use 18-char case-insensitive — with a 3-char checksum appended. Many integrations require the 18-char form.
How is the checksum calculated?
Split the 15-char ID into three 5-char chunks; for each chunk, build a 5-bit value from the uppercase flags; look up the value in a 32-char table. The three lookups form the checksum suffix.
What if I paste an invalid ID?
The tool flags it. Salesforce IDs are 15 or 18 alphanumeric chars. Anything else is invalid format.