Free Online Calculators
Clear, accurate calculators for money, dates, health and everyday maths — with the formula shown so you can check the result.
Percentage Calculator
Calculate percentages, percentage change and percentage of totals.
Age Calculator
Calculate exact age in years, months and days from date of birth.
Date Difference Calculator
Find the years, months, weeks and days between two dates.
Days Between Dates
Count calendar days and working days between two dates.
BMI Calculator
Calculate Body Mass Index in metric or imperial units.
Loan Calculator
Estimate loan repayments, total interest and payoff schedule.
EMI Calculator
Calculate monthly EMI with a full month-by-month amortization table.
Discount Calculator
Find sale price and savings from a percentage or flat discount.
Profit and Loss Calculator
Calculate profit, loss, margin and markup.
GST Calculator
Add or remove GST/sales tax at any rate.
VAT Calculator
Add or remove VAT and see net, tax and gross amounts.
Currency Calculator
Convert currencies using exchange rates you enter manually.
Time Calculator
Add and subtract hours, minutes and seconds.
Salary Calculator
Convert salary between annual, monthly, weekly, daily and hourly.
Electricity Bill Calculator
Estimate an electricity bill from units with your own tariff slabs.
Fuel Cost Calculator
Calculate trip fuel cost from distance, mileage and fuel price.
Compound Interest Calculator
Project savings growth with compounding and monthly contributions.
Simple Interest Calculator
Calculate simple interest and total amount.
Tip Calculator
Work out the tip and split the bill between people.
Unit Price Calculator
Compare products by price per unit to find the best deal.
Calculators you can check
Every calculator shows how the answer was worked out, so you can verify it rather than trust a black box. Calculations run in your browser, and nothing you enter is saved.
Pakistan-friendly, without pretending
Tax rates, electricity tariffs and exchange rates change often and vary by province, company and customer category. Rather than hard-coding numbers that go out of date, the GST, electricity bill and currency calculators let you enter the current rate. This keeps results accurate and avoids showing stale “live” data.
Important
Financial calculators give estimates for planning; lenders may use different methods, fees or rounding. The BMI calculator is educational and is not a medical diagnosis. See our disclaimer.
Guides for calculator tools
All guidesBest Free Online Tools for Everyday Tasks
The free browser tools that save the most time for students, freelancers, small businesses and office work — what each does and when to use it.
Read guideHow to Calculate Percentages: Formulas and Examples
Easy formulas for percentage of a number, percentage change, increases, decreases and reverse percentages — with worked examples and common pitfalls.
Read guideHow to Calculate Age Online (Exactly, in Years, Months and Days)
How exact age is calculated, why simple subtraction gives wrong answers, leap-year birthdays, and how to find your age on a cut-off date for jobs and exams.
Read guideCalculator Tools FAQ
Are the results accurate?
The formulas are standard and tested, and results are shown with the working. Real-world figures (loan offers, bills, tax) may differ because of fees, rounding or rules that change — always confirm with the provider.
Do the currency rates update automatically?
No. The currency calculator uses the rate you type in, and says so clearly. This avoids showing outdated rates as if they were live.
Can I download the results?
Loan, EMI and compound interest calculators can download their schedules as CSV files you can open in Excel or Google Sheets.
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