Free calculators
Fast, accurate calculators for the everyday math that actually matters — loan and EMI payments, compound interest, percentages, dates and more. Enter your numbers and the result updates instantly so you can compare scenarios in seconds. Completely free, with no sign-up and nothing to install.
41 free calculators · no sign-up required
Age Calculator
Find your exact age in years, months and days.
Percentage Calculator
Percentages, increases and differences made easy.
EMI Calculator
Monthly loan EMI, interest and totals.
SIP Calculator
Estimate mutual fund SIP returns.
Compound Interest Calculator
See how savings grow over time.
GST Calculator
Add or remove GST in seconds.
CAGR Calculator
Compound annual growth rate of an investment.
FD Calculator
Fixed deposit maturity and interest.
BMI Calculator
Check your Body Mass Index in seconds.
Mortgage Calculator
Estimate your monthly home loan payment.
Loan Calculator
Monthly payment, interest and total cost.
Tip Calculator
Tip and split the bill instantly.
Calorie Calculator (TDEE)
Find your daily calorie needs.
Date Difference Calculator
Days, weeks and months between dates.
Discount Calculator
Sale price and savings, instantly.
Average Calculator
Mean, median, sum and range.
Salary Calculator
Hourly to annual pay, and back.
GPA Calculator
Calculate your grade point average.
Temperature Converter
Celsius, Fahrenheit and Kelvin.
Unit Converter
Length, weight, volume, speed & more.
Countdown to Date
Live countdown to any event.
Number to Words
Spell out any number in English.
Aspect Ratio Calculator
Resize keeping the same ratio.
Time Duration Calculator
Hours and minutes between two times.
Currency Converter
Convert between 30+ currencies with live rates.
Sales Tax Calculator
Add or remove sales tax from any price.
ROI Calculator
Return on investment and annualized ROI.
Simple Interest Calculator
Interest and total from principal, rate and time.
Profit Margin Calculator
Gross margin, profit and markup from cost & price.
Markup Calculator
Selling price and profit from cost and markup.
Savings Calculator
Project your savings with monthly deposits.
Pregnancy Due Date Calculator
Estimate your baby's due date from your last period.
Body Fat Calculator
Estimate body fat % with the Navy method.
Ideal Weight Calculator
Healthy weight for your height and sex.
Running Pace Calculator
Pace per km/mile and speed from time & distance.
Grade Calculator
Weighted class grade from your assignments.
Fraction Calculator
Add, subtract, multiply and divide fractions.
Scientific Calculator
Trig, logs, powers and roots — free online.
Standard Deviation Calculator
Sample & population standard deviation.
Square Footage Calculator
Area in sq ft or m² — plus material cost.
Time Card Calculator
Add up weekly hours, breaks and pay.
Calculators — frequently asked questions
Are these calculators free to use?
Yes, every calculator is free and unlimited — no account, no credits and no sign-up required.
How accurate are the results?
Calculations use standard financial and mathematical formulas and update live as you type, so you can trust the numbers and instantly test different inputs.
Do they work on my phone?
Yes — every calculator works in any modern browser on phones, tablets and desktops.