Calculators
16 free tools · runs in your browser
Everyday calculators: loans, BMI, percentages, age, dates, statistics, fractions and a full scientific calculator. Like every tool on UsefulTools, these are free, require no signup, and process everything locally on your device.
Online Calculator
A fast basic calculator with keyboard support
Scientific Calculator
Trig, logs, powers and constants
BMI Calculator
Body mass index in metric or imperial
Age Calculator
Exact age in years, months and days
Percentage Calculator
Percent of a number, ratios and change
Loan / EMI Calculator
Monthly payments, total interest & schedule
Tip Calculator
Tip amount and split per person
Discount Calculator
Sale prices and money saved instantly
GST / Sales Tax Calculator
Add or remove tax from any price
Simple & Compound Interest Calculator
Compare simple vs compound growth
Aspect Ratio Calculator
Scale dimensions without distortion
Fraction Calculator
Add, subtract, multiply, divide fractions
Mean, Median & Mode Calculator
Instant stats for any list of numbers
Date Difference Calculator
Days, weeks and months between dates
Fuel Cost Calculator
Trip fuel expenses and consumption
Bill Split Calculator
Divide any bill evenly or by share