Indicates the starting point of an action or event, in time or place
When to use
start time, start place, start range
The nuance
'부터' is used only for starting points, to specify the beginning in time, place, or range.
부터 (bu-teo, buteo) · 까지 (kka-ji, kkaji)
'부터' indicates the starting point, while '까지' marks the end point, clearly defining positions in time, place, or range.

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Indicates the starting point of an action or event, in time or place
When to use
start time, start place, start range
The nuance
'부터' is used only for starting points, to specify the beginning in time, place, or range.
Indicates the ending point of an action or event, in time or place
When to use
end time, end place, end range
The nuance
'까지' is used only for ending points, to specify the end in time, place, or range.
수업은 9시부터 시작해요.
su-eop-eun 9si-bu-teo si-jak-hae-yo., su eop eun 9si bu teo si jak hae yo.
'부터' correctly indicates the start time, so it is appropriate.
수업은 9시까지 시작해요.
su-eop-eun 9si-kka-ji si-jak-hae-yo., su eop eun 9si kka ji si jak hae yo.
'까지' indicates an end point and cannot be used for start; '부터' should be used.
서울부터 부산까지 여행했어요.
seo-ul-bu-teo bu-san-kka-ji yeo-haeng-haess-eo-yo., seo ul bu teo bu san kka ji yeo haeng haess eo yo.
'부터' and '까지' correctly mark start and end places, making the sentence correct.
서울까지 부산부터 여행했어요.
seo-ul-kka-ji bu-san-bu-teo yeo-haeng-haess-eo-yo., seo ul kka ji bu san bu teo yeo haeng haess eo yo.
The start and end positions are reversed; '부터' must be the start and '까지' the end.
회의는 오후 2시부터 오후 4시까지 진행됩니다.
hoe-ui-neun o-hu 2si-bu-teo o-hu 4si-kka-ji jin-haeng-doep-ni-da., hoe ui neun o hu 2si bu teo o hu 4si kka ji jin haeng doep ni da.
Clearly marks start and end times, making it natural.
회의는 오후 2시부터 오후 4시부터 진행됩니다.
hoe-ui-neun o-hu 2si-bu-teo o-hu 4si-bu-teo jin-haeng-doep-ni-da., hoe ui neun o hu 2si bu teo o hu 4si bu teo jin haeng doep ni da.
'부터' cannot be used twice for start and end; '까지' must be used for the end time.
이 책은 1장부터 10장까지 읽으세요.
i chaek-eun 1jang-bu-teo 10jang-kka-ji ik-eu-se-yo., i chaek eun 1jang bu teo 10jang kka ji ik eu se yo.
Correctly indicates the start and end of a range, so it's correct.
이 책은 10장부터 1장까지 읽으세요.
i chaek-eun 10jang-bu-teo 1jang-kka-ji ik-eu-se-yo., i chaek eun 10jang bu teo 1jang kka ji ik eu se yo.
The range is reversed; '부터' must indicate start and '까지' the end.
Which sentence correctly uses '부터'?
When should you use '까지'?
Which sentence is correct?