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