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Percentages, GST, discounts, units, loans — typed the way you'd say them.
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Each one opens a calculator with the numbers already set.
Popular tools
The ones people reach for most.
Every calculator
17 calculators for the things you compute every day.
Scientific Calculator
Trigonometry, logarithms, powers and roots in one expression.
Percentage Calculator
Percentages of a value, ratios, and increase or decrease.
Age Calculator
Your exact age in years, months and days — plus your next birthday.
BMI Calculator
Body mass index from your height and weight, with its category.
Discount Calculator
Sale price and how much you actually save.
GST Calculator
Add GST to a price, or pull it back out of an inclusive one.
EMI Calculator
Monthly instalment, total interest and what the loan really costs.
Unit Converter
Length, mass, temperature, area, volume, speed, time and data.
Date Calculator
Days between two dates, or add and subtract time from one.
Compound Interest Calculator
What an amount grows to, and the effective rate behind it.
Simple Interest Calculator
Interest on the principal alone — SI = P × R × T / 100.
Profit & Loss Calculator
Profit or loss from a cost and selling price, with the margin too.
Average Calculator
Mean, median, mode and spread for any list of numbers.
Fraction Calculator
Add, subtract, multiply and divide fractions — exactly.
Time Duration Calculator
Hours and minutes between two times, overnight shifts included.
Download Time Calculator
How long a file takes to download at a given connection speed.
Student Percentage Calculator
Total marks to a percentage, across subjects with any maximums.