Convert String to Double in Salesforce (4 Easy Methods)
Summary
The article explains how to convert String values to Double data types in Salesforce Apex, addressing common challenges when numeric data comes in as text from UI inputs, APIs, or bulk uploads. It provides clear code examples using Double.valueOf() with error handling, demonstrating real-world use cases such as price calculations with tax, API response processing, user input validation, and bulk data processing. Salesforce teams can implement these patterns to ensure precise calculations, data integrity, and error-free reporting when working with decimal numbers stored as strings.
Takeaways
- Use Double.valueOf() to convert valid String to Double in Apex code
- Handle invalid input with try-catch to avoid runtime exceptions
- Validate String format before conversion to prevent errors
- Bulkify conversions in loops for efficient batch processing
- Prefer Number fields with decimals over Text fields to reduce conversions
Imagine your sales team imports leads from a CSV file every morning. The file comes from different partners, and fields such as Annual Revenue, Discount Percentage, and Probability are stored as text. You want to run accurate forecasts, build Sales dashboards , and automate follow‑up emails, but you can’t do that if all your numbers live in String fields instead of real numbers. In Salesforce Apex , a String is just plain text, and a Double is a 64‑bit number that can store decimal values, like 1200000.75 or 0.15. Y ou use Double when you need to work with numeric data that has decimal points, such as revenue, conversion rates, or product quantities with fractions. If your CRM stores these values as text, you first need to convert them to Double so Apex can calculate, compare, and report correctly. In Salesforce Apex, developers often work with different data types such as String, Integer, and Double.