Math & Numbers
Convert kilometers to miles with configurable decimal precision
km-to-milesMath & Numbers
Convert kilograms to pounds with configurable decimal precision
kg-to-lbMath & Numbers
Convert pounds to kilograms with configurable decimal precision
lb-to-kgMath & Numbers
Convert between different length units (meters, feet, inches, miles, etc.)
length-unit-converterMath & Numbers
Calculate limits of functions as x approaches a value
limit-calculatorMath & Numbers
Compute complex impedance, magnitude |Z| and phase angle φ for series or parallel RLC circuits: X_L=2πfL, X_C=1/(2πfC), |Z|=√(R²+X²), φ=atan2(X,R). Supports any subset of R/L/C and an optional linear frequency sweep.
impedance-calculatorFinance
Project investment growth with initial principal plus monthly contributions and compound interest. Supports compounding frequency, inflation-adjusted real value, and yearly contribution escalation, with a yearly breakdown table and nominal vs real balance curves.
investment-calculatorMath & Numbers
Convert inches to yards with configurable decimal precision
inches-to-yardMath & Numbers
Convert inches to meters with configurable decimal precision
inches-to-meterMath & Numbers
Convert inches to millimeters with configurable decimal precision
inches-to-mmMath & Numbers
Calculate Q1, Q3, IQR, and optional 1.5 x IQR outlier fences for a numeric dataset
interquartile-range-calculatorMath & Numbers
Convert inches to centimeters with configurable decimal precision
inches-to-cm