Calculation
Fast numeric converters and calculators for planning, measurement, and time.
Tools
9
Avg. score
83%
Epoch Converter
Translate Unix timestamps into human-readable dates, and dates back into epoch time.
Percentage Calculator
Solve percentages, discounts, sales tax, and VAT from any two values.
Interest
Project compound growth, regular savings, or a loan payment from a rate and a term.
Number Base
Convert a number between decimal, binary, hexadecimal, octal, and Base64.
Aspect Ratio
Read a pixel size as a ratio, then scale the other side so the layout stays proportional.
Cron Parser
Read a cron expression as a sentence and list the next run times.
Data & Bandwidth
Convert storage sizes and transfer rates, from MB and GB to Mbps and MB/s.
Unit Converter
Convert length, mass, volume, temperature, and other common units.
Tip Calculator
Calculate a restaurant tip and split the total across any number of people.