Featured tools
The strongest starting points for common calculations and conversions.
Percentage Calculator
Calculate percentages, increases, decreases and percentage differences instantly.
Date Difference Calculator
Count the days, weeks, months and working days between any two dates.
Percentage Increase Calculator
Work out rises, growth, compounding and CAGR with the working shown.
Math & numbers
Handle percentages, ratios, averages and number systems.
Percentage Calculator
Calculate percentages and changes.
Ratio Calculator Soon
Simplify and compare ratios.
Average Calculator Soon
Find mean and average values.
Number Base Converter Soon
Convert binary, decimal, octal and hex.
Date & time
Calculate ages, durations, timestamps and working days.
Age Calculator
Calculate exact age and next birthday.
Date Difference Calculator
Find time between two dates.
Timestamp Converter
Convert Unix timestamps and dates.
Business Days Calculator Soon
Count weekdays between dates.
Finance calculators
Calculate interest, GST, EMI, discounts and margins.
EMI Calculator Soon
Estimate monthly loan payments.
GST Calculator Soon
Add or remove GST from amounts.
Compound Interest Calculator Soon
Estimate investment growth over time.
Discount Calculator Soon
Calculate final price and savings.
Unit converters
Convert common measurements quickly and accurately.
Length Converter Soon
Convert metres, feet, miles and more.
Weight Converter Soon
Convert kilograms, pounds and ounces.
Temperature Converter Soon
Convert Celsius, Fahrenheit and Kelvin.
Data Storage Converter Soon
Convert bytes, KB, MB, GB and TB.
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Percentage and date tools are live now; age, finance and unit converters are coming next.