# SMS Calculators & planners | VeloBotix

> Plan SMS campaign cost, Unicode credits and bulk volume for Sri Lanka on VeloBotix.

Source: https://www.velobotix.app/resources/calculators

# Calculators & planners

Tools and guides to estimate SMS spend before you send.

-   [## Unicode vs GSM-7 credit estimator
    
    See how Sinhala, Tamil or emoji changes how many credits a message consumes.](https://www.velobotix.app/resources/guides/gsm7-vs-unicode-sms)
-   [## SMS pricing & pack calculator
    
    Compare LKR packs on the pricing page. Credits never expire.](https://www.velobotix.app/sms-pricing-sri-lanka)
-   [## Bulk campaign size planner
    
    Steps to estimate list size, Unicode cost and Sender ID before a blast.](https://www.velobotix.app/resources/guides/send-bulk-sms-sri-lanka)