The current typical conversion rate for Robux to US dollars is about 1 Robux = $0.012 USD for buying Robux directly. For developers cashing out Robux earned, the exchange rate is often around $0.0035 to $0.0038 per Robux after fees. To summarize:

• Buying Robux: 100 Robux ≈ $1.20 USD
• Developer cashout (DevEx): 1 Robux ≈ $0.0035 to $0.0038 USD

This means the value of Robux in dollars depends on the context: buying Robux costs roughly 1.2 cents each, but developers receive significantly less when converting Robux to real currency due to platform fees and exchange rates.