All Calculators Directory
Explore all 80 verified calculators and converters across 12 categories. Free to use, no signup, runs directly in your browser.
Google AdSense Reserved Space
Age and Date
Ages, date gaps, working days, leap years and countdowns.
Age Calculator
Find exact age in years, months and days from a date of birth.
Date Difference Calculator
Measure the gap between two dates in years, months, weeks and days.
Days Calculator
Count the days between two dates, including or excluding the end date.
Add Days to Date
Add or subtract a number of days from a starting date.
Birthday Countdown
See how many days remain until the next birthday.
Working Days Calculator
Count Monday–Friday days and optionally skip listed holidays.
Leap Year Calculator
Test whether a year has 29 February under Gregorian rules.
Percentage and Discount
Percentages, discounts, reverse percentages, profit and loss.
Percentage Calculator
Find what percent one number is of another.
Percentage Increase
Increase a value by a percentage.
Percentage Decrease
Decrease a value by a percentage.
Discount Calculator
Apply one or several sequential discounts to a price.
Reverse Percentage
Recover the original whole from a known percentage amount.
Marks Percentage
Convert obtained marks into a percentage of the paper total.
Profit Percentage
Profit amount and profit percent on cost price.
Loss Percentage
Loss amount and loss percent on cost price.
EMI and Loans
EMI, interest, amortization, eligibility estimates and comparisons.
Home Loan EMI
Estimate monthly home-loan instalments, interest and a repayment schedule.
Car Loan EMI
Estimate vehicle-loan instalments and total interest.
Personal Loan EMI
Unsecured-loan instalment estimate with amortization.
Education Loan
Estimate education-loan EMIs for the repayment phase you enter.
Simple Interest
Interest that grows in proportion to time, without compounding.
Compound Interest
Compounded growth with a frequency you choose.
Loan Eligibility
Back-solve a principal from income, obligations and an EMI-capacity assumption.
Loan Comparison
Compare up to three loans on EMI, interest and total repayment.
Amortization Calculator
Month-by-month principal, interest and remaining balance, with CSV export.
GST
Add or remove GST and split CGST, SGST or IGST.
GST Add Calculator
Add GST to a taxable amount and preview CGST/SGST halves.
GST Remove Calculator
Extract taxable value and GST from an inclusive price.
CGST Calculator
Illustrate CGST as half of GST on an intra-state assumption.
SGST Calculator
Illustrate SGST as half of GST on an intra-state assumption.
IGST Calculator
Illustrate IGST as the full GST amount on an inter-state assumption.
GST Rate Calculator
Infer the GST rate from exclusive and inclusive amounts.
Reverse GST Calculator
Work backwards from an inclusive amount to GST and taxable value.
Google AdSense Reserved Space
Salary
CTC, in-hand pay, overtime, increments and gratuity estimates.
In-Hand Salary
Estimate take-home pay from basic, HRA, allowances and deductions you enter.
CTC Calculator
Build CTC from gross pay plus employer contributions.
Gross Salary
Sum basic, HRA and allowances.
Net Salary
Gross minus the deduction and tax assumptions you supply.
Hourly Salary
Convert annual, monthly or weekly pay into an hourly rate using hours you set.
Overtime Calculator
Overtime pay from hourly rate, hours and a multiplier.
Leave Salary Calculator
Encash leave using a days-in-month assumption.
Increment Calculator
Apply a percentage hike to current pay.
Gratuity Calculator
Estimate gratuity with configurable day-count factors.
Time and Working Hours
Shift length, timesheets, overtime and time arithmetic.
Time Duration
Elapsed time between two clock times, including overnight.
Working Hours
Net shift length after breaks, with overnight support.
Overtime Hours
Hours worked above a standard day or week you define.
Timesheet
Total several clock-in/out sessions, including overnight rows.
Hours to Minutes
Convert decimal hours into minutes and HH:MM.
Minutes to Hours
Convert minutes into decimal hours and HH:MM.
Time Addition
Add two HH:MM durations.
Time Subtraction
Subtract one HH:MM duration from another.
Unit Converters
Length, weight, temperature, area, volume, speed, data, time, pressure and power.
Length Converter
Convert millimetres, metres, inches, feet, miles and more.
Weight Converter
Convert milligrams, grams, kilograms, tonnes, pounds and ounces.
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin.
Area Converter
Convert square metres, acres, hectares and square feet.
Volume Converter
Convert millilitres, litres, cubic metres and gallons.
Speed Converter
Convert m/s, km/h, mph and knots.
Data Storage Converter
Convert bits, bytes and decimal or binary prefixes.
Time Unit Converter
Convert milliseconds, seconds, minutes, hours, days and weeks.
Pressure Converter
Convert pascals, bar, PSI and atmospheres.
Power Converter
Convert watts, kilowatts and mechanical horsepower.
Currency
Worldwide converter powered by a live currency catalogue.
Currency Converter
Convert amounts using a live worldwide currency catalogue and published rates.
Gold Rate Calculator
Calculate gold rate per 1 gram, 8g sovereign, 10g or tola across 24K, 22K, 18K and 14K purities with making charges and GST.
Gold Purity Calculator
Determine pure gold content, karat rating, hallmark equivalents (999, 916, 750, 585), alloy percentage, and scrap melt value.
Google AdSense Reserved Space
Health and Fitness
BMI, calorie estimates, ideal weight, water intake and running pace.
BMI Calculator
Body mass index from metric or imperial measurements.
Calorie Estimator
Mifflin-St Jeor BMR and activity-adjusted calorie estimate.
Ideal Weight
Devine, Robinson and Hamwi estimates from height and sex.
Water Intake Calculator
A simple ml-per-kg hydration estimate plus activity water.
Pace Calculator
Running or walking pace and average speed.
Education
GPA, CGPA, attendance and exam score planning.
GPA Calculator
Credit-weighted GPA on a scale you configure.
CGPA Calculator
Combine semester GPAs with credit weights.
Academic Marks Percentage
Subject marks as a percentage of the paper total.
Attendance Calculator
Attendance percentage from classes attended and held.
Required Attendance
How many future classes you still need (or can skip) for a target percentage.
Exam Score Calculator
Score still needed on a weighted exam to hit a final average.
Construction
Concrete, paint, tiles, area and brick quantity estimates.
Concrete Volume
Rectangular slab or footing volume with a waste percentage.
Paint Quantity
Litres of paint from area, coats, coverage and waste.
Tile Quantity
How many tiles cover an area, including waste.
Area Calculator
Rectangle, triangle or circle area in the units you enter.
Brick Calculator
Single-leaf brick count from wall and brick face size.
Vehicle
Fuel cost, mileage and trip cost estimates.
Google AdSense Reserved Space