Use में when the landmark contains the located thing or supplies an abstract domain: कमरे में “in the room,” इतिहास में “in history.” Use पर when the landmark supports something, serves as a point on a route or social map, or names an occasion: मेज़ पर “on the table,” स्टेशन पर “at the station,” जन्मदिन पर “on a birthday.” The physical contrast is a useful starting point, but conventional Hindi—not English in, on, or at—decides the many extended uses.
For the full semantic ranges, see में for containment and domains and पर for surfaces, locations, and occasions.
The decision tree
Ask these questions in order:
- Is one thing physically inside another? Choose में.
- Is it supported by, attached to, or displayed on a surface? Choose पर.
- Is the place viewed as an activity-containing institution or event? Choose में: कक्षा में, बैठक में, स्कूल में.
- Is it viewed as a point, stop, workplace, service location, or destination? पर is often conventional: स्टेशन पर, काम पर, दुकान पर.
- Is the noun an information domain? Content is typically में—किताब में—while a medium or platform often uses पर—वेबसाइट पर, टीवी पर.
- Can both occur? Decide whether you mean interior/participation (में) or availability, surface, or reference-point location (पर).
चाबियाँ दराज़ में हैं।
cābiyā̃ darāz meṃ haiṃ.
The keys are in the drawer.
चाबियाँ मेज़ पर हैं।
cābiyā̃ mez par haiṃ.
The keys are on the table.
This is the clearest physical contrast: में profiles an enclosing region; पर profiles contact with a supporting surface.
Physical minimal pairs
With the same landmark, changing the postposition can change the scene rather than merely its style.
खिलौना डिब्बे में है।
khilaunā ḍibbe meṃ hai.
The toy is in the box.
खिलौना डिब्बे पर है।
khilaunā ḍibbe par hai.
The toy is on the box.
बच्चे बस में बैठे हैं।
bacce bas meṃ baiṭhe haiṃ.
The children are sitting in the bus.
बस पर नया विज्ञापन लगा है।
bas par nayā vijñāpan lagā hai.
A new advertisement is displayed on the bus.
The oblique form appears before either postposition: डिब्बा → डिब्बे में/पर. Do not let the vivid spatial difference hide the shared case rule.
For ordinary furniture, Hindi often chooses support where English uses a different preposition. One sits कुर्सी पर, sleeps बिस्तर पर, and hangs a picture दीवार पर.
दादी कुर्सी पर बैठी अख़बार पढ़ रही हैं।
dādī kursī par baiṭhī axbār paṛh rahī haiṃ.
Grandmother is sitting on a chair reading the newspaper. (respectful)
घर में versus घर पर
Both are common, but they answer different versions of “where?” घर में locates someone or something inside the house and can contrast the interior with the yard or street. घर पर means at home, emphasizing presence or availability at that social location.
बच्चे घर में खेल रहे हैं; बाहर बहुत गर्मी है।
bacce ghar meṃ khel rahe haiṃ; bāhar bahut garmī hai.
The children are playing inside the house; it is very hot outside.
मैं शाम छह बजे घर पर रहूँगा; पार्सल तब भेज दीजिए।
maĩ śām chah baje ghar par rahū̃gā; pārsal tab bhej dījie.
I'll be at home at six; please send the parcel then.
The second sentence does not deny that the speaker will physically be inside. It selects पर because a delivery depends on the person being available at the home address. English at home happens to match this use, but English cannot predict all comparable expressions.
Institutions, workplaces, and public points
में presents an institution as an environment containing an activity: स्कूल में पढ़ना, बैठक में बोलना, दफ़्तर में कोई होना. पर commonly presents a workplace, stop, or service site as a point: काम पर जाना, स्टेशन पर मिलना, दुकान पर रुकना.
मीरा आज दफ़्तर में अकेली है।
mīrā āj daftar meṃ akelī hai.
Meera is alone in the office today.
मीरा आज काम पर नहीं गई।
mīrā āj kām par nahīṃ gaī.
Meera did not go to work today.
हम स्टेशन पर मुख्य दरवाज़े के पास मिलेंगे।
ham sṭeśan par mukhya darvāze ke pās mileṅge.
We'll meet at the station near the main entrance.
स्टेशन में is possible when the interior is genuinely contrasted—स्टेशन में बहुत भीड़ थी, बाहर सड़क खाली थी—but neutral meeting and arrival expressions favor स्टेशन पर. Similarly, दुकान में focuses on being inside a shop; दुकान पर treats the shop as a work or service point.
Participation and occasions
An event can be construed as an activity one participates in, or as an occasion at which another act occurs. में marks participation or internal content; पर marks the occasion or trigger.
बैठक में बजट पर लंबी चर्चा हुई।
baiṭhak meṃ bajaṭ par lambī carcā huī.
There was a long discussion of the budget in the meeting.
उसके जन्मदिन पर हमने उसे परिवार की एक पुरानी तस्वीर भेंट की।
uske janmadin par hamne use parivār kī ek purānī tasvīr bheṇṭ kī.
On her birthday, we presented her with an old family photograph.
In the first sentence, बैठक में is the containing event; बजट पर marks the topic, another extended use of पर. In the second, the birthday is the occasion associated with gift-giving. With a wedding, standard Hindi usually makes the occasion explicit as शादी के मौक़े पर or शादी के अवसर पर. If the claim concerns something that happened as part of wedding proceedings, शादी में is natural: शादी में बहुत लोग आए “many people came to the wedding.”
शादी में दोनों परिवारों के पुराने दोस्त भी आए थे।
śādī meṃ donoṃ parivāroṃ ke purāne dost bhī āe the.
Old friends of both families had also come to the wedding.
Texts, information, media, and platforms
For information contained in a text, list, picture, or record, Hindi usually uses में. For a mark written on a physical surface, or content encountered through a broadcast medium or digital platform, पर is conventional.
रिपोर्ट में इस ख़र्च का कोई ज़िक्र नहीं है।
riporṭ meṃ is xarc kā koī zikr nahīṃ hai.
There is no mention of this expense in the report.
लिफ़ाफ़े पर अपना पूरा पता लिखिए।
lifāfe par apnā pūrā patā likhie.
Write your full address on the envelope. (respectful)
यह साक्षात्कार कल टीवी पर दिखाया जाएगा।
yah sākṣātkār kal ṭīvī par dikhāyā jāegā.
This interview will be shown on television tomorrow.
वेबसाइट पर समय बदल गया है, लेकिन ईमेल में पुराना समय लिखा है।
vebsāiṭ par samay badal gayā hai, lekin īmel meṃ purānā samay likhā hai.
The time has changed on the website, but the old time is written in the email.
The last pair is conventional rather than geometrically literal. A website is construed as a platform (पर); an email message is a bounded text containing information (में). Some speakers extend पर to particular apps or chats, especially under English influence, but मैसेज में लिखा है remains the natural content reading.
Abstract domains versus targets
में places an item within a field, set, period, or condition: इतिहास में, कानून में, जनवरी में, मुसीबत में. पर identifies the target of attention, discussion, dependence, or pressure: विषय पर, फ़ैसले पर, उस पर भरोसा.
आधुनिक हिंदी साहित्य में इस उपन्यास का विशेष स्थान है।
ādhunik hindī sāhitya meṃ is upanyās kā viśeṣ sthān hai.
This novel has a special place in modern Hindi literature. (academic)
समिति अगले सप्ताह प्रस्ताव पर विचार करेगी।
samiti agle saptāh prastāv par vicār karegī.
The committee will consider the proposal next week. (formal)
These collocations must be learned with their governing noun or verb. Spatial imagery explains the contrast historically and conceptually, but it does not authorize replacing पर in विचार करना with में.
A short dialogue
अ: क्या आप अभी घर में हैं? ब: घर पर ही हूँ, लेकिन घर के अंदर नहीं—बरामदे में बैठा हूँ।
a: kyā āp abhī ghar meṃ haiṃ? ba: ghar par hī hū̃, lekin ghar ke andar nahīṃ—barāmde meṃ baiṭhā hū̃.
A: Are you inside the house right now? B: I'm at home, but not inside—I'm sitting on the veranda. (respectful question)
The reply distinguishes the larger social location घर पर from the speaker's exact position बरामदे में, outside the enclosed interior. The questioner's घर में specifically asks about the interior. In a delivery call, घर पर हूँ is the ordinary availability answer; घर में हूँ specifically presents the house as the enclosing space.
Diagnostic checklist
- Is there containment, participation, membership, a period, or an information domain? Choose में.
- Is there surface support, attachment, a point location, a service site, a medium, a target, or an occasion? Choose पर.
- With घर, दुकान, दफ़्तर, स्टेशन, what construal is relevant: interior or social/reference point?
- Is the event being entered as a participant (में) or used as the occasion for something else (पर)?
- Are you copying English in/on/at? Check the Hindi collocation instead.
Common Mistakes
❌ चाबियाँ मेज़ में हैं।
Incorrect for keys resting on the tabletop—में would place them inside the table or an understood compartment.
✅ चाबियाँ मेज़ पर हैं।
cābiyā̃ mez par haiṃ.
The keys are on the table.
❌ मैं सोमवार में आऊँगा।
Incorrect for a calendar day—Hindi uses को with days, not में or पर.
✅ मैं सोमवार को आऊँगा।
maĩ somvār ko āū̃gā.
I will come on Monday.
❌ रिपोर्ट पर इसका ज़िक्र है।
Incorrect for information contained in the report; पर would need a surface or topic interpretation.
✅ रिपोर्ट में इसका ज़िक्र है।
riporṭ meṃ iskā zikr hai.
This is mentioned in the report.
❌ हम बैठक पर शामिल हुए।
Incorrect—participation in an event is expressed with में.
✅ हम बैठक में शामिल हुए।
ham baiṭhak meṃ śāmil hue.
We took part in the meeting.
Key Takeaways
- में profiles an interior, containing activity, period, condition, set, or information domain.
- पर profiles a surface, reference point, service location, medium, target, or occasion.
- Places such as घर, दुकान, and स्टेशन permit both when the speaker changes the construal.
- English in, on, and at do not map one-to-one onto either postposition.
- Learn abstract uses with their collocations: बैठक में, विषय पर, रिपोर्ट में, वेबसाइट पर.
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Start learning Hindi →Related Topics
- में for containment and domainsA1 — Use में for physical interiors, membership, time spans, languages, and abstract domains with correct oblique complements and pronoun forms.
- पर for surfaces locations and occasionsA2 — Use पर for surfaces, location points, activity sites, media, and occasions while distinguishing it from में and predicate-selected uses.
- Postpositions and oblique complementsA1 — Build Hindi relational phrases by placing a postposition after an oblique noun or special pronoun form instead of translating English prepositions word for word.
- के अंदर and के बाहर: interior and exterior locationB1 — Use के अंदर and के बाहर to locate something relative to a named boundary, while distinguishing bare अंदर/बाहर and neutral containment with में.
- के ऊपर ऊपर and पर comparedB2 — Distinguish relational के ऊपर, deictic ऊपर, and surface or target marker पर in physical, hierarchical, and lexical uses.
- Postpositional phrase placementA2 — Place complete Hindi postpositional phrases before the predicate and move them as units to express frame, topic, focus, or afterthought.