Free Online Calculators
Everyday calculators, without the clutter. Calculate dates, percentages and payments, or convert measurements with one complete Unit Converter.
Unit Converter
Convert measurements across 13 categories. Choose your units and see the result instantly.
Open toolAge Calculator
Calculate your exact age in years, months and days
Open toolBMI Calculator
Calculate your Body Mass Index with metric or imperial units
Open toolBusiness Card Bleed Calculator
Free print bleed calculator for business cards and flyers
Open toolEMI / Loan Calculator
Calculate loan EMI with the reducing-balance method
Open toolPercentage Calculator
Three calculators in one: X% of Y, X is what percent of Y, and percentage increase/decrease
Open toolTime Zone Converter
Free time zone converter: convert any time between world time zones with automatic DST handling
Open tool Coming SoonCalcHubTimesheet Calculator
Total worked hours and breaks into exportable tables
Planned toolComing SoonCalcHubExpense Splitter
Split shared trip or meal expenses fairly
Planned toolComing SoonCalcHubBreak Even Calculator
Calculate break-even units and revenue
Planned toolComing SoonCalcHubFreelance Rate Calculator
Calculate hourly rate based on costs and utilization
Planned toolComing SoonCalcHubProfit Margin Calculator
Compare margin and markup
Planned toolComing SoonCalcHubWorking Days Calculator
Count business days with optional supplied holidays
Planned tool7 available tools. Read each tool’s inputs and processing details before starting.
Frequently asked questions
Are these calculators really free?
Yes — every calculator on this page is completely free.
How accurate are the calculators?
They use standard published formulas (for example, EMI uses the reducing-balance method). They are great for planning, but not a substitute for professional financial or medical advice.
Is my input data uploaded?
No. All calculations happen locally in your browser.
Do the calculators work on mobile?
Yes — every calculator is mobile-friendly with large touch targets.
Can I trust the BMI result for medical decisions?
BMI is a screening measure, not a diagnosis. Talk to a health professional about what it means for you.