Percentage Calculator
Calculate what percentage one number is of another.
Open calculator →All Calculators
Search or browse all 28 LifeAdmin calculators, grouped around practical money, date, student, work and everyday tasks.
Money & Calculations
6 practical tools
Discount Calculator
Find the discount amount and final price after a percentage reduction.
Open calculator →Salary Calculator
Estimate gross pay, deductions and take-home pay for a pay period.
Open calculator →Savings Calculator
Project savings growth from an initial balance, recurring contributions and interest.
Open calculator →Loan Calculator
Estimate monthly loan payments, total repayment and interest.
Open calculator →Tip & Bill Split Calculator
Calculate a tip, total bill and amount per person.
Open calculator →Date & Time
6 practical tools
Age Calculator
Calculate age accurately between a birth date and a reference date.
Open calculator →Date Difference Calculator
Find the number of days and weeks between two dates.
Open calculator →Working Days Calculator
Count working days between two dates using a configurable work week.
Open calculator →Countdown Calculator
Calculate the remaining time until a future date and time.
Open calculator →Time Duration Calculator
Calculate elapsed time between two clock times, including overnight shifts.
Open calculator →Time Zone Converter
Convert a date and time between major IANA time zones.
Open calculator →Students
5 practical tools
GPA Calculator
Calculate weighted GPA from course credits and grade points.
Open calculator →CGPA Calculator
Calculate cumulative GPA from semester GPAs and credit hours.
Open calculator →Attendance Calculator
Calculate attendance percentage and classes needed to reach a target.
Open calculator →Grade Calculator
Convert marks into a percentage and an optional letter grade.
Open calculator →Required Marks Calculator
Find the marks needed on remaining work to reach a target overall percentage.
Open calculator →Work
5 practical tools
Hourly ↔ Monthly Salary Calculator
Convert pay between hourly, daily, weekly, monthly and annual periods.
Open calculator →Working Hours Calculator
Calculate shift duration after subtracting breaks, including overnight work.
Open calculator →Overtime Calculator
Estimate overtime pay from an hourly rate, overtime hours and multiplier.
Open calculator →Freelance Rate Calculator
Estimate a sustainable freelance hourly and day rate from income goals and billable capacity.
Open calculator →Notice Period Calculator
Calculate an estimated final date from a notice start date and period.
Open calculator →Everyday
6 practical tools
Electricity Cost Calculator
Estimate appliance energy use and electricity cost from power, time and rate.
Open calculator →Fuel Cost Calculator
Estimate fuel required and trip cost using metric or US fuel-efficiency inputs.
Open calculator →Room Area Calculator
Calculate rectangular room area in common metric or imperial units.
Open calculator →Paint Calculator
Estimate paint required from wall area, openings, coverage and coats.
Open calculator →Cooking Unit Converter
Convert common cooking volume measurements with regional context.
Open calculator →Unit Converter
Convert length, mass, area, volume, temperature, speed, time and data units.
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