Calculators for Developers
Quick answers to the arithmetic that interrupts engineering work: converting a Unix timestamp, comparing time zones for a meeting, sizing a RAID array, or turning an SLA percentage into allowed downtime.
Every calculator shows its inputs and result side by side so you can sanity-check numbers before they end up in a design doc or config file.
13 Calculators for Developers
Time Converter
Compare times across multiple timezones visually.
CalculatorsTimestamp ↔ Date
Convert between Unix timestamps and human-readable dates.
CalculatorsUnit Converter
Convert between various units like length, mass, and temperature.
CalculatorsWorld Clock
View analog clocks for different timezones.
CalculatorsAPI Rate Limit Calculator
Calculate and visualize API rate limits across different time windows.
CalculatorsCalculator
A simple calculator for basic arithmetic.
Calculatorschmod Calculator
Convert Unix file permissions between checkboxes, octal, symbolic and chmod commands.
CalculatorsCountdown Clock
Set a timer that counts down to zero.
CalculatorsPercentage Calculator
Calculate percentages, fractions, and discounts.
CalculatorsRAID Calculator
Calculate storage capacity and redundancy for various RAID levels.
CalculatorsStopwatch
Measure elapsed time with lap functionality.
CalculatorsToken Counter
Estimate the token count for text with various LLM models.
CalculatorsUptime/Downtime Calculator
Calculate service uptime and downtime based on SLA percentages.
Calculators