Workers environment variable limits
Limit · workers
64 variables on Free, 128 on Paid, 5 KB each.
Free plan
64 variables per Worker, 5 KB each.
Paid plan
128 variables per Worker, 5 KB each.
What it means
Secrets and text variables share the count. There is no account-wide variable count on the limits table.
What it does to a bill
Variables are not a usage charge. Do not put API keys in wrangler vars; use secrets.
Sources
- Workers limitsOfficial