Math & Numbers
Calculate arithmetic, geometric, and Fibonacci sequences, including the nth term, the first terms, and the partial sum
sequence-calculatorMath & Numbers
Calculate natural logarithms ln(x), with optional comparisons to log10 and the matching exponential form
natural-log-calculatorMath & Numbers
Calculate natural exponential values e^x, inspect growth factors, and compare them with the inverse e^-x
exponential-calculatorMath & Numbers
Calculate nth roots with configurable degree, including odd roots of negative numbers
nth-root-calculatorMath & Numbers
Round numbers to integers, decimal places, tens, or hundreds using a simple rounding mode selector
rounding-calculatorMath & Numbers
Count significant figures and round numbers to a target number of significant digits
sig-fig-calculatorMath & Numbers
Calculate square roots, check whether a value is a perfect square, and verify the squared result
square-root-calculatorMath & Numbers
Simplify ratios, calculate ratio shares, and convert between ratio, fraction, and decimal forms
ratio-calculatorMath & Numbers
Add, subtract, multiply, and divide values written in scientific notation, then return standard, scientific, and engineering forms
scientific-notation-calculatorMath & Numbers
Convert numbers between standard decimal format and scientific notation, with optional engineering notation output
scientific-notation-converterMath & Numbers
Solve common percentage questions including percentage of a total, value from a percentage, and percentage change
math-percentage-calculatorDate & Time
Compare multiple participants across time zones, find overlapping working windows, and export the best meeting slots to ICS
time-zone-workflow-scheduler