math.ceil

local result = math.ceil(
    value
)

Type	Name	Description
`number`	value	Number to round up

Type	Name	Description
`int`	result	Smallest integer greater than or equal to value

Ceil a positive float

local result = math.ceil(4.2)

engine.print("info", result) -- 5

Ceil a negative float

local result = math.ceil(-4.2)

engine.print("info", result) -- -4

Ceil an exact integer returns itself

local result = math.ceil(7.0)

engine.print("info", result) -- 7

Ceil a value just below an integer

local result = math.ceil(2.0001)

engine.print("info", result) -- 3

Calculate number of pages needed for items

local itemCount = 17
local perPage = 5
local pages = math.ceil(itemCount / perPage)

engine.print("info", pages) -- 4

Round up to the next whole unit

local bytes = 1500
local kb = math.ceil(bytes / 1024)

engine.print("info", kb) -- 2

Ensure minimum allocation size

local required = 3.1
local allocated = math.ceil(required)

engine.print("info", allocated) -- 4