Promice rings are worn on whichever finger feels most meaningful or comfortable to you; there isn’t a single universal rule. Traditionally, many people place a promise ring on the left ring finger (the same finger often used for engagement rings), but modern practice is flexible and you may choose based on personal significance, aesthetics, or practicality. Common options and considerations:

• Left ring finger: Echoes engagement/wedding customs for a classic, symbolic look.
• Right hand: Keeps the ring distinct from engagement rings; can feel less formal or more casual.
• Middle finger or index finger: Makes a bold statement or suits larger or more statement-style rings.
• Stack compatibility: If you might later wear an engagement ring, consider whether you want to reserve the left ring finger for both rings or place the promise ring on a different finger to avoid crowding.
• Sentimental meaning: Some people choose a finger based on comfort, daily activities, or personal symbolism (e.g., the pinky for a playful “promise” gesture).

If you’d like, share your style (minimalist vs. statement), hand preference (left vs. right), and whether you anticipate an engagement ring in the future. I can tailor a recommendation to fit your goals and daily routine.