Math & Numbers
Run one-sample or two-sample t-tests from raw data and inspect t statistics, degrees of freedom, and p-values
t-test-calculatorMath & Numbers
Run simple linear regression on paired numeric data and inspect slope, intercept, correlation, and predictions
regression-calculatorCalculator
Calculate elevation statistics from a list of elevation points
elevation-calculatorMath & Numbers
Calculate discounted prices, savings, and final price after applying percentage or fixed amount discounts
discount-calculatorMath & Numbers
Calculate profit margin, markup, and selling price based on cost and desired margin percentage
margin-calculatorMath & Numbers
Calculate markup, selling price, and profit based on cost and markup percentage
markup-calculatorFinance
Calculate debt payoff plan using the snowball method (pay smallest balance first)
debt-snowball-calculatorFinance
Calculate profit/loss for stock call and put options
stock-option-calculatorFinance
Find, convert and normalize currency values within text content
text-currency-normalizerMath & Numbers
Convert between fractions and decimals with support for mixed numbers, improper fractions, and various decimal formats
fraction-decimal-converterMath & Numbers
Adjust and format number precision, decimal places, and scientific notation with various rounding and padding options
number-precision-adjusterMath & Numbers
Round numbers with precision control, supporting different rounding methods and batch processing
number-rounding-tool