cumplirvsrealizar
/koom-PLEER/
/rray-ah-lee-SAR/
💡 Quick Rule
Use cumplir to *fulfill* a duty, promise, or age. Use realizar to *make real* a project or dream.
Think: Cumplir your Commitments. Realizar your Reality.
- To say 'I realize...' (in your head), you almost always use 'Me doy cuenta de...'. This is a major false friend for English speakers.
📊 Comparison Table
| Context | cumplir | realizar | Why? |
|---|---|---|---|
| Goals vs. Dreams | Cumplí mi objetivo de correr 5km. | Realicé mi sueño de correr un maratón. | Cumplir is for meeting a specific, measurable goal. Realizar is for achieving a broader, more profound dream. |
| Duties vs. Actions | Cumplió con su deber. | Realizó una investigación. | Cumplir for fulfilling an abstract duty or obligation. Realizar for carrying out a concrete action or task. |
| Ages vs. Events | Mañana cumplo 30 años. | Se realizó la reunión anual. | Cumplir is the only verb for stating an age you are turning. Realizar is used when an event is held or takes place. |
✅ When to Use "cumplir" / realizar
cumplir
To fulfill, complete, achieve a target, or turn an age.
/koom-PLEER/
Turning an age
Mi hijo cumple diez años mañana.
My son turns ten tomorrow.
Fulfilling a promise or duty
Siempre cumple sus promesas.
He always keeps his promises.
Meeting a requirement or goal
Tienes que cumplir todos los requisitos.
You have to meet all the requirements.
Serving a sentence
Cumplió cinco años de condena.
He served a five-year sentence.
realizar
To carry out, perform, execute, or make something a reality.
/rray-ah-lee-SAR/
Carrying out a project or task
Vamos a realizar un estudio de mercado.
We are going to carry out a market study.
Making a dream or ambition real
Ella realizó su sueño de ser cantante.
She made her dream of being a singer come true.
Holding an event
La boda se realizó en la playa.
The wedding was held on the beach.
Performing an action
El cirujano realizó la operación con éxito.
The surgeon successfully performed the operation.
🔄 Contrast Examples
With "cumplir":
Cumplió la meta de ventas este mes.
He met the sales goal this month.
With "realizar":
Realizó su ambición de liderar el equipo de ventas.
He achieved his ambition of leading the sales team.
The Difference: Use 'cumplir' for hitting a specific, pre-defined target (like a number). Use 'realizar' for bringing a larger, more complex ambition to life.
With "cumplir":
El empleado cumplió con todas sus tareas.
The employee completed all of his tasks.
With "realizar":
El equipo realizó un análisis del proyecto.
The team performed an analysis of the project.
The Difference: 'Cumplir con' is like checking items off a to-do list. 'Realizar' describes the active process of carrying out a specific, often complex, procedure like an analysis or experiment.
🎨 Visual Comparison
Cumplir is like checking off a task. Realizar is like bringing a big dream to life.
⚠️ Common Mistakes
Realicé que no tenía mi cartera.
Me di cuenta de que no tenía mi cartera.
This is a classic false friend. To 'realize' something in your mind, the phrase is 'darse cuenta de'. 'Realizar' means to make something happen in the physical world.
Voy a realizar mi promesa.
Voy a cumplir mi promesa.
Promises, duties, and obligations are abstract things you 'fulfill' or 'keep', which is 'cumplir'. You don't 'carry out' a promise.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
🏷️ Key Words
✏️ Quick Practice
Quick Quiz: Cumplir vs Realizar
Question 1 of 3
Which verb correctly fills the blank? 'Ayer, mi abuela ___ 80 años.'
🏷️ Tags
Frequently Asked Questions
So I can NEVER use 'realizar' to mean 'to realize'?
Correct, not for the mental act of realizing something. That is always 'darse cuenta de'. 'Realizar' is about action in the real world—making something real. English speakers make this mistake constantly, so mastering this difference will make you sound much more natural!
What about 'cumplir con' vs just 'cumplir'?
Great question! Often, they are interchangeable. However, 'cumplir con' is very common when talking about fulfilling duties or responsibilities ('cumplir con mi trabajo'). Using 'cumplir' without 'con' is more common for hitting targets or turning an age ('cumplir la meta', 'cumplir 25 años').