Free online calculators, all running locally in your browser.
Basic arithmetic operations
Body mass index
Fixed/equal principal payment
Repayment schedule details
Combined loan calculator
Income tax calculation
Exact age down to days
Various percentage calculations
Multi-item discount comparison
Investment returns and growth
Days between, workdays
Length, weight, volume
Celsius/Fahrenheit/Kelvin
Square meters/acres/hectares
Fuel consumption per 100km
Add/subtract days from dates
Date difference calculation
Year difference calculation
Online countdown timer
Focus timer
Profit margin and markup rate
Tiered electricity billing
Equations, trigonometry
Area, perimeter, angles
4.0/5.0 grading scale
Cron expression builder
Variance and median
Savings deposit interest
Pension planning
Insurance contribution details
Multi-currency conversion
Investment return calculation
Business day calculation
Find weekday for any date
Important date countdown
Sort and deduplicate numbers
Click counter with history
KB/MB/GB/TB conversion
KB/MB/GB/TB/PB conversion
Calculate distance from coordinates