Finance
Generate Bitcoin addresses from private keys for different address types
btc-address-generatorFinance
Validate Bitcoin addresses and detect address type (P2PKH, P2SH, Bech32)
btc-address-validatorMath & Numbers
Calculate fuel costs based on distance, fuel efficiency, and gas price
gas-price-calculatorFinance
Calculate loan payments, interest, and amortization schedule for various loan types
loan-calculatorMath & Numbers
Convert between different data storage units (bit, byte, KB, MB, GB, TB, etc.)
data-storage-converterMath & Numbers
Convert between different length units (meters, feet, inches, miles, etc.)
length-unit-converterCalculator
Calculate probabilities for poker hands and card combinations
card-probabilityDate & Time
Calculate business days excluding weekends
business-day-calculatorDate & Time
Convert dates to/from Julian Day Number and Julian calendar
julian-calendarMath & Numbers
Perform arithmetic operations on very large numbers
big-number-calculatorMath & Numbers
Convert numbers to continued fraction representation
continued-fractionMath & Numbers
Calculate limits of functions as x approaches a value
limit-calculator