Swahili separates three English “how much/many” questions. Use class-agreeing -ngapi to count individual people or things, kiasi gani to ask about an amount of a mass or a degree, and bei gani to ask at what price something is offered. Choosing among them requires deciding what is being measured, not translating “how much” word for word.
The ordinary clause order remains intact. Unahitaji machungwa mangapi? keeps the object after unahitaji; the question word follows the noun and agreement identifies its class.
-Ngapi counts members of a noun class
The interrogative stem -ngapi follows a countable noun and takes its plural concord. Because “how many?” normally asks for more than one possible member, the most useful forms come from plural classes.
| Class | Noun phrase | Build | Meaning |
|---|---|---|---|
| 2 | wafanyakazi wangapi | wa-ngapi | how many workers? |
| 4 | mikutano mingapi | mi-ngapi | how many meetings? |
| 6 | masanduku mangapi | ma-ngapi | how many boxes? |
| 8 | viti vingapi | vi-ngapi | how many chairs? |
| 10 | barua ngapi | ngapi | how many letters? |
Class 10 has no visible concord before ngapi in familiar phrases such as siku ngapi, nyumba ngapi, and barua ngapi. That zero does not make -ngapi invariant; the other classes visibly distinguish wangapi, mingapi, mangapi, and vingapi.
Wafanyakazi wangapi watakuwa kwenye zamu ya usiku leo?
How many employees will be on the night shift today?
Mikutano mingapi imeahirishwa kwa sababu ya mvua kubwa?
How many meetings have been postponed because of the heavy rain?
Masanduku mangapi yamewasili kutoka bandarini asubuhi hii?
How many boxes arrived from the port this morning?
Viti vingapi vinatoshea kwenye chumba hiki bila kubana njia?
How many chairs fit in this room without blocking the passage?
Barua ngapi zimebaki bila kutiwa sahihi na mkurugenzi?
How many letters remain unsigned by the director?
Agreement continues onto the verb: class 2 wa-ngapi wa-ta-kuwa, class 4 mi-ngapi i-me-ahirishwa, class 6 ma-ngapi ya-me-wasili, class 8 vi-ngapi vi-na-toshea, and class 10 ngapi zi-me-baki.
Containers and contents are different counts
Count a container with -ngapi; measure its contents with kiasi gani.
Umenunua chupa ngapi za mafuta ya kupikia?
How many bottles of cooking oil have you bought?
This counts class 10 chupa. It does not tell us the total volume of oil.
Umenunua mafuta ya kupikia kiasi gani kwa mgahawa?
How much cooking oil have you bought for the restaurant?
This asks for an amount—perhaps liters or kilograms—rather than a number of containers. English uses “how much/how many”; Swahili exposes the conceptual difference through two constructions.
Kiasi gani asks amount or degree
Kiasi is a class 7 noun meaning an amount, quantity, or degree; gani is invariant. The phrase can follow the substance being measured or head a phrase with cha.
Unahitaji mchele kiasi gani kuwapikia watu ishirini?
How much rice do you need to cook for twenty people?
Kiasi gani cha mafuta kinabaki kwenye tanki baada ya safari?
How much fuel remains in the tank after the trip?
In the second sentence, class 7 head kiasi controls ki- in kinabaki. The substance follows in associative cha mafuta.
The same phrase asks degree, especially in (formal) and (academic) discussion:
Mradi umechelewa kwa kiasi gani ikilinganishwa na ratiba ya awali?
By how much has the project been delayed compared with the original schedule?
Mabadiliko hayo yameathiri uzalishaji kwa kiasi gani mwaka huu?
To what extent have those changes affected production this year?
An answer may be numeric (kwa wiki mbili, kwa asilimia kumi) or descriptive (kwa kiasi kikubwa). The question asks a scale, not a count of discrete objects.
Bei gani asks price
Use bei gani when the missing value is the selling or quoted price. A phrase with kwa is especially natural: kwa bei gani? “at what price?”
Baiskeli hiyo inauzwa kwa bei gani baada ya punguzo?
At what price is that bicycle being sold after the discount?
Mnachapisha vijitabu hivi kwa bei gani kwa kila nakala?
At what price do you print these booklets per copy?
When only the numerical amount matters, speakers also ask Ni shilingi ngapi? “How many shillings is it?” This counts class 10 shilingi. Bei gani instead frames the value explicitly as a price and can invite an answer including terms, currency, or wholesale versus retail conditions.
Short dialogue: neutral, focused, and answered
Neutral quantity question
A: Unahitaji machungwa mangapi kwa juisi ya wageni?
A: How many oranges do you need for the guests' juice?
Focused alternatives
A: Unahitaji machungwa mangapi hasa—manne au sita?
A: How many oranges exactly do you need—four or six?
Natural full-clause answer
B: Ninahitaji machungwa sita kwa sababu wageni ni wengi leo.
B: I need six oranges because there are many guests today.
Class 6 machungwa selects mangapi. The number sita does not take concord, while one through five have their own agreement behavior; see number agreement.
Keep the unknown quantity in place
English places “how many” before the noun and adds do/does/did. Swahili normally keeps noun + agreeing -ngapi where the noun phrase belongs.
Msimamizi ameagiza meza ngapi kwa ukumbi mpya?
How many tables has the supervisor ordered for the new hall?
The complete verb ameagiza remains a-me-agiz-a. Nothing moves in front of msimamizi, and meza ngapi occupies the ordinary object position.
Register and usage
Count questions with -ngapi and price questions with bei gani are neutral in (informal) shopping and (formal) inventories. Kiasi gani is also neutral for literal amounts, while kwa kiasi gani meaning “to what extent” is especially common in (formal) and (academic) language. Careful current Standard Swahili preserves visible concord in wangapi, mingapi, mangapi, and vingapi; the zero-looking class 10 form ngapi should not be generalized to the other classes.
Common Mistakes
Giving class 6 magari class 8 agreement
❌ Magari vingapi yamepita kwenye daraja leo?
Incorrect — magari requires class 6 mangapi.
✅ Magari mangapi yamepita kwenye daraja leo?
How many cars have crossed the bridge today?
Giving class 4 miti class 6 agreement
❌ Miti mangapi imepandwa kando ya barabara mpya?
Incorrect — miti requires class 4 mingapi.
✅ Miti mingapi imepandwa kando ya barabara mpya?
How many trees have been planted beside the new road?
Using -ngapi after kiasi
❌ Unahitaji kiasi ngapi cha sukari kwa keki hiyo?
Incorrect — the amount noun kiasi takes invariant gani in this construction.
✅ Unahitaji kiasi gani cha sukari kwa keki hiyo?
How much sugar do you need for that cake?
Asking a price with bei ngapi
❌ Mkoba huu unauzwa kwa bei ngapi?
Incorrect in careful Standard Swahili — ask for the price with bei gani.
✅ Mkoba huu unauzwa kwa bei gani dukani?
At what price is this bag sold in the shop?
Adding English do-support
❌ Unafanya kuhitaji mifuko mingapi ya saruji?
Incorrect — kufanya is not an interrogative auxiliary.
✅ Unahitaji mifuko mingapi ya saruji kwa ukuta huu?
How many bags of cement do you need for this wall?
Key Takeaways
- Count people and discrete things with class-agreeing -ngapi.
- Ask about a mass amount or degree with kiasi gani.
- Ask explicitly about price with bei gani or kwa bei gani.
- A container count and an amount of contents are different questions.
- Keep the noun phrase in its ordinary position and preserve concord throughout the clause.
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Start learning Swahili →Related Topics
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- Agreement with -pi 'Which?'B1 — How the interrogative stem -pi agrees with every Swahili noun class and selects one or more members of a known set.
- Agreement with Numerals One through FiveB1 — Form the agreeing Swahili numerals one through five and recognize their irregular surface shapes.
- Quantities, Prices and Shopping CollocationsA2 — Use Swahili price questions, measures, requests and bargaining sequences naturally while keeping number agreement and shop context in view.