finance
Loan Payment
Find your monthly mortgage, auto, or student loan payment.
mortgageautoamortization
Open calculator →Library
All calckit calculators
Browse every tool in one view or hop back using your browser history.
Finance
Finance tools
finance
Savings Growth
Project your savings balance with monthly contributions.
compound interestfuture valueretirement
Open calculator →finance
Currency Converter
Convert between any two currencies using a custom rate.
forexfxexchange
Open calculator →finance
ROI Calculator
Measure return on investment including extra costs.
returnprofitbusiness
Open calculator →Health
Health tools
health
BMI
Body Mass Index using metric units.
healthweightheight
Open calculator →health
BMR
Basal Metabolic Rate using the Mifflin-St Jeor equation.
metabolismcalories
Open calculator →health
Daily Calorie Needs
Estimate daily calories using activity multipliers.
tdeeactivity
Open calculator →health
Water Intake
Hydration target based on weight and activity.
hydration
Open calculator →Construction
Construction tools
construction
Concrete Volume
Estimate ready-mix volume for slabs or pads.
slabmaterials
Open calculator →construction
Paint Coverage
Plan paint gallons for interiors or exteriors.
materialspaint
Open calculator →construction
Flooring Cost
Budget flooring installs by room size.
budgetmaterials
Open calculator →construction
Roof Pitch
Convert rise/run into pitch and angle.
roofingangle
Open calculator →Math
Math tools
math
Percentage Increase
Measure growth between two values.
percentagemath
Open calculator →math
Percentage Decrease
Track reductions from a starting value.
discountmath
Open calculator →math
Metric → Imperial Length
Convert meters into feet and inches.
conversionlength
Open calculator →math
Metric → Imperial Weight
Convert kilograms into pounds and stones.
conversionweight
Open calculator →Computer Science
Computer Science tools
computer science
Random Integer
Generate a random integer within your range.
randomintrng
Open calculator →computer science
Random Unsigned Int
Get a random unsigned integer u8-bit, u16-bit, u32-bit, or u64-bit.
randomuint32uint64
Open calculator →computer science
Random UUID
Generate RFC 4122 version 4 identifiers.
uuidrandom
Open calculator →computer science
Random Bytes
Produce secure random bytes as hex.
entropyhex
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