Meaning
Estimating something without precise measurement; approximately.
Cultural Background
In Spain, this phrase is a point of pride in traditional trades. It reflects the 'maestría' (mastery) of artisans who didn't need modern technology. While 'a ojo de buen cubero' is understood, Mexicans often prefer 'al tanteo'. This comes from 'tantear' (to feel or size up). In Argentina, you might hear 'a ojo' more frequently in casual street slang, but 'cubero' remains the standard for 'correct' idiomatic speech. Chileans often shorten it to 'al ojo'. It is extremely common in the 'ferias' (markets) when buying vegetables.
Sound like a native
Use this when someone asks you for a specific number you don't know. It buys you time and sounds very natural.
Don't use with 'ser'
We don't say 'Soy un ojo de buen cubero'. We use it with verbs of action like 'calcular' or 'hacer'.
Meaning
Estimating something without precise measurement; approximately.
Sound like a native
Use this when someone asks you for a specific number you don't know. It buys you time and sounds very natural.
Don't use with 'ser'
We don't say 'Soy un ojo de buen cubero'. We use it with verbs of action like 'calcular' or 'hacer'.
Regional variations
If you are in Mexico, try 'al tanteo' to impress the locals even more.
Test Yourself
Completa la frase con la expresión correcta.
No tengo báscula, así que pesaré la harina a ___ de buen ___.
The fixed idiom is 'a ojo de buen cubero'.
Which situation is most appropriate for this phrase?
A scientist is publishing a paper on the exact mass of a subatomic particle.
Science requires precision; this phrase is for estimations.
Match the Spanish phrase with its English equivalent.
Match the following:
'Rule of thumb' or 'eyeballing it' are the best matches.
Completa el diálogo.
Juan: ¿Cuánto mide este sofá? María: No sé, no tengo metro. Pero ________, diría que dos metros.
Maria is making a guess without a measuring tape.
🎉 Score: /4
Visual Learning Aids
Precision Levels
Practice Bank
4 exercisesNo tengo báscula, así que pesaré la harina a ___ de buen ___.
The fixed idiom is 'a ojo de buen cubero'.
A scientist is publishing a paper on the exact mass of a subatomic particle.
Science requires precision; this phrase is for estimations.
Match each item on the left with its pair on the right:
'Rule of thumb' or 'eyeballing it' are the best matches.
Juan: ¿Cuánto mide este sofá? María: No sé, no tengo metro. Pero ________, diría que dos metros.
Maria is making a guess without a measuring tape.
🎉 Score: /4
Frequently Asked Questions
10 questionsSí, tiene siglos de antigüedad y se remonta a la época de los gremios medievales.
No es común. La frase es fija con 'cubero', aunque la gente te entendería si bromeas.
No, es demasiado informal. En esos casos se usa 'estimación' o 'aproximadamente'.
Es la persona que fabrica cubas o barriles de madera.
Es similar, pero 'a ojo de buen cubero' se refiere específicamente a la acción de medir con la vista.
Sí, es universalmente entendida, aunque algunas regiones tienen sus propias variantes preferidas.
Sí, puedes decir 'llegaré en diez minutos a ojo de buen cubero'.
Para nada, es una frase muy simpática y positiva.
Porque solo un 'buen' artesano tiene la vista lo suficientemente entrenada para no fallar.
Lo más parecido es 'rule of thumb' o 'eyeballing it'.
Related Phrases
Más o menos
similarMore or less
Aproximadamente
synonymApproximately
Al tanteo
similarBy feel / by trial
A ojo
specialized formBy eye
A bulto
similarIn bulk / roughly
Ni por asomo
contrastNot even close
