Calculators.com.bd
Free, easy-to-use calculators. Pick one below to get started.
Electrical & Engineering
Solar System Calculator
Size your solar panels, inverter and battery
Open calculator โIPS Backup Calculator
Size your IPS inverter and battery for backup power
Open calculator โOhms Law Calculator
Voltage, current, resistance and power
Open calculator โWatts Volts Amps Calculator
Convert between watts, volts and amps
Open calculator โVoltage Drop Calculator
Cable voltage drop and percentage
Open calculator โResistor Color Code Calculator
Decode 4-band resistor colours
Open calculator โElectricity Bill Calculator
Appliance running cost
Open calculator โDate & Time
Age Calculator
Find exact age in years, months and days โ plus weeks, days and your next birthday.
Open calculator โDate Calculator
Days between two dates, or add/subtract time from a date.
Open calculator โTime Calculator
Add or subtract days, hours, minutes and seconds
Open calculator โHours Calculator
Hours worked between a start and end time
Open calculator โTime Card Calculator
Weekly timesheet with hours and pay
Open calculator โTime Zone Calculator
Convert a time between time zones
Open calculator โTime Duration Calculator
Elapsed time between two date-times
Open calculator โDay Counter
Count the days between two dates
Open calculator โDay of the Week Calculator
Find the weekday for any date
Open calculator โWeek Number Calculator
ISO week number for any date
Open calculator โTime to Decimal Calculator
Convert between time and decimal hours
Open calculator โHealth & Fitness
BMI Calculator
Body Mass Index from your height and weight, with your healthy range
Open calculator โBMR Calculator
Find your Basal Metabolic Rate and daily calorie needs
Open calculator โCalorie Calculator
Daily calories to maintain, lose or gain weight
Open calculator โCarbohydrate Calculator
Daily carbs for your goal
Open calculator โFiber Calculator
Daily fiber for your body
Open calculator โSugar Calculator
Daily added-sugar limit
Open calculator โMacro Calculator
Daily protein, carbs & fat
Open calculator โFat Intake Calculator
Daily fat for your body
Open calculator โBody Surface Area Calculator
Your BSA in mยฒ
Open calculator โWaist to Hip Ratio Calculator
Your WHR & health risk
Open calculator โBody Adiposity Index Calculator
Estimate body fat from hips & height
Open calculator โWaist to Height Ratio Calculator
Your WHtR & health band
Open calculator โBody Fat Calculator
Estimate body fat percentage with the tape method
Open calculator โIdeal Weight Calculator
Your ideal weight across trusted formulas
Open calculator โLean Body Mass Calculator
Estimate your lean mass and fat mass
Open calculator โHealthy Weight Calculator
The healthy weight range for your height
Open calculator โCalories Burned Calculator
Calories burned by activity and duration
Open calculator โOne Rep Max Calculator
Estimate your 1RM and training percentages
Open calculator โTarget Heart Rate Calculator
Your max heart rate and training zones
Open calculator โPace Calculator
Running pace, speed and splits
Open calculator โArmy Body Fat Calculator
Body fat by the Army tape method
Open calculator โWater Intake Calculator
How much water you should drink daily
Open calculator โProtein Intake Calculator
Daily protein for your goal
Open calculator โTDEE Calculator
Total daily energy burn
Open calculator โGFR Calculator
Kidney filtration rate
Open calculator โBody Type Calculator
Find your body shape
Open calculator โBAC Calculator
Blood alcohol estimate
Open calculator โAnorexic BMI Calculator
BMI vs the 17.5 marker
Open calculator โWeight Watchers Points Calculator
Classic food points
Open calculator โOverweight Calculator
Are you overweight?
Open calculator โChild Height Predictor
Predict adult height
Open calculator โFinance & Tax
Income Tax Calculator
Bangladesh income tax by NBR slabs (FY 2024โ25)
Open calculator โLoan EMI Calculator
Monthly EMI, total interest and payment
Open calculator โSimple Interest Calculator
Simple interest and total amount
Open calculator โCompound Interest Calculator
Maturity value with compounding
Open calculator โSIP Calculator
Future value of a monthly investment
Open calculator โROI Calculator
Return on investment, gain and annualised return
Open calculator โCAGR Calculator
Compound annual growth rate
Open calculator โSavings Goal Calculator
How much to save each month for a goal
Open calculator โFuture Value Calculator
What money today will be worth later
Open calculator โPresent Value Calculator
What future money is worth today
Open calculator โDown Payment Calculator
Down payment, loan amount and EMI
Open calculator โAmortization Calculator
Loan repayment schedule year by year
Open calculator โDPS Calculator
Deposit Pension Scheme maturity
Open calculator โFDR Calculator
Fixed deposit maturity & interest
Open calculator โProvident Fund Calculator
Grow your PF balance
Open calculator โNet Salary Calculator
Take-home pay after tax & PF
Open calculator โMortgage Calculator
Monthly home-loan payment
Open calculator โRetirement Calculator
Project your retirement savings
Open calculator โInflation Calculator
Value of money over time
Open calculator โCredit Card Payoff Calculator
Time & interest to clear a card
Open calculator โAuto Loan Calculator
Car loan monthly payment
Open calculator โInvestment Calculator
Grow your investments
Open calculator โMutual Fund Calculator
SIP & lump-sum growth
Open calculator โAnnuity Calculator
Future value of payments
Open calculator โAnnuity Payout Calculator
Income from a lump sum
Open calculator โPension Calculator
Pension pot & income
Open calculator โMortgage Payoff Calculator
Pay off your mortgage early
Open calculator โStudent Loan Calculator
Education loan repayment
Open calculator โHome Equity Loan Calculator
Borrow against your home
Open calculator โHELOC Calculator
Home equity line of credit
Open calculator โAuto Lease Calculator
Car lease monthly payment
Open calculator โLease Calculator
Lease monthly payment
Open calculator โRefinance Calculator
Should you refinance?
Open calculator โDebt Payoff Calculator
Become debt-free
Open calculator โDebt Consolidation Calculator
Combine your debts
Open calculator โDebt-to-Income Ratio Calculator
Your DTI ratio
Open calculator โHouse Affordability Calculator
How much house can you afford?
Open calculator โRent Affordability Calculator
How much rent can you afford?
Open calculator โRent vs Buy Calculator
Rent or buy a home?
Open calculator โBudget Calculator
50/30/20 budget
Open calculator โSalary Calculator
Convert pay periods
Open calculator โBond Calculator
Bond price & yield
Open calculator โDepreciation Calculator
Asset depreciation
Open calculator โRental Property Calculator
Rental cash flow & ROI
Open calculator โReal Estate Appreciation Calculator
Property value growth
Open calculator โIRR Calculator
Internal rate of return
Open calculator โAPR Calculator
True cost of a loan
Open calculator โPayback Period Calculator
Recover your investment
Open calculator โAverage Return Calculator
Arithmetic & geometric mean
Open calculator โCollege Cost Calculator
Save for education
Open calculator โPersonal Loan Calculator
Personal loan EMI
Open calculator โBusiness Loan Calculator
Business loan EMI
Open calculator โBoat Loan Calculator
Boat loan payment
Open calculator โPayment Calculator
Payment or payoff time
Open calculator โRepayment Calculator
Loan repayment schedule
Open calculator โFinance Calculator
Time value of money
Open calculator โBusiness & Commerce
VAT Calculator
Add or remove VAT at any rate
Open calculator โDiscount Calculator
Sale price and savings
Open calculator โProfit Margin Calculator
Profit margin and markup from cost and price
Open calculator โMarkup Calculator
Selling price from cost and markup
Open calculator โCommission Calculator
Sales commission and total earnings
Open calculator โCurrency Converter
Convert between major currencies
Open calculator โMath & Algebra
Percentage Calculator
Percent of a number, % change and more
Open calculator โFraction Calculator
Add, subtract, multiply and divide fractions
Open calculator โRatio Calculator
Simplify ratios and solve proportions
Open calculator โLCM & GCF Calculator
Least common multiple and greatest common factor
Open calculator โExponent Calculator
Raise a number to any power
Open calculator โSquare Root Calculator
Square roots and nth roots
Open calculator โRounding Calculator
Round to decimals or nearest 10/100/1000
Open calculator โRandom Number Generator
Generate random numbers in a range
Open calculator โScientific Notation Converter
Convert to and from scientific notation
Open calculator โQuadratic Equation Calculator
Solve a xยฒ + b x + c = 0
Open calculator โEquation Solver
Solve algebraic equations
Open calculator โIntegral Calculator
Definite and indefinite integrals
Open calculator โDerivative Calculator
Derivatives and differentiation
Open calculator โMatrix Calculator
Matrix operations
Open calculator โMath Solver with Steps
Step-by-step math solver
Open calculator โLogarithm Calculator
log in any base
Open calculator โPermutation & Combination Calculator
nPr and nCr
Open calculator โSlope Calculator
Slope, angle & line equation
Open calculator โPythagorean Theorem Calculator
Right-triangle sides
Open calculator โScientific Calculator
Full scientific calculator
Open calculator โBasic Calculator
Quick everyday calculator
Open calculator โStatistics Calculator
Mean, SD, variance & more
Open calculator โMean Median Mode Range Calculator
The four averages at once
Open calculator โProbability Calculator
Combine event probabilities
Open calculator โSample Size Calculator
Survey sample size
Open calculator โZ-score Calculator
Standard score & percentile
Open calculator โP-value Calculator
P-value from a z-score
Open calculator โConfidence Interval Calculator
Estimate the true mean
Open calculator โPercent Error Calculator
Measured vs true value
Open calculator โNumber Sequence Calculator
Arithmetic & geometric
Open calculator โBinary Calculator
Add, subtract & convert binary
Open calculator โHexadecimal Calculator
Hex arithmetic & conversion
Open calculator โHalf-Life Calculator
Radioactive decay
Open calculator โDistance Calculator
Distance between points
Open calculator โRight Triangle Calculator
Solve a right triangle
Open calculator โRoot Calculator
Any nth root
Open calculator โFactor Calculator
All factors of a number
Open calculator โPrime Factorization Calculator
Break into prime factors
Open calculator โCommon Factor Calculator
GCF & common factors
Open calculator โBig Number Calculator
Exact huge-number maths
Open calculator โLong Division Calculator
Quotient & remainder
Open calculator โStatistics & Data
Average Calculator
Mean, sum, min and max of a data set
Open calculator โMedian Calculator
Median and quartiles
Open calculator โMode Calculator
Most frequent value(s)
Open calculator โStandard Deviation Calculator
Standard deviation and variance
Open calculator โPercentile Calculator
Value at any percentile
Open calculator โWeighted Average Calculator
Average weighted by importance
Open calculator โGeometry & Construction
Area Calculator
Area of rectangles, circles, triangles and more
Open calculator โCircle Calculator
Radius, diameter, circumference and area
Open calculator โTriangle Calculator
Area, perimeter and type from three sides
Open calculator โVolume Calculator
Volume of boxes, cylinders, spheres and cones
Open calculator โPerimeter Calculator
Perimeter of common shapes
Open calculator โSurface Area Calculator
Surface area of 3D solids
Open calculator โSquare Footage Calculator
Floor area in sq ft, mยฒ, katha
Open calculator โConcrete Calculator
Concrete volume and materials
Open calculator โBrick Calculator
Bricks needed for a wall
Open calculator โPaint Calculator
Litres of paint for a wall
Open calculator โTile Calculator
Number of tiles for a floor
Open calculator โBTU Calculator
Air conditioner size for a room
Open calculator โStair Calculator
Steps, risers & run
Open calculator โRoofing Calculator
Roof area & shingles
Open calculator โMulch Calculator
Mulch volume & bags
Open calculator โGravel Calculator
Gravel volume & weight
Open calculator โUnit Conversion
Length Converter
Convert metres, feet, miles and more
Open calculator โWeight Converter
Convert kg, pounds, ounces, maund
Open calculator โTemperature Converter
Celsius, Fahrenheit and Kelvin
Open calculator โSpeed Converter
km/h, mph, knots and more
Open calculator โVolume Converter
Litres, gallons, cups and more
Open calculator โData Storage Converter
Bytes, KB, MB, GB, TB
Open calculator โRoman Numeral Converter
Numbers to Roman numerals and back
Open calculator โNumber Base Converter
Binary, octal, decimal and hex
Open calculator โConversion Calculator
All-in-one unit converter
Open calculator โTransportation
Fuel Cost Calculator
Cost of fuel for a trip
Open calculator โGas Mileage Calculator
Fuel economy in km/l, MPG, L/100km
Open calculator โMileage Calculator
Travel reimbursement by distance
Open calculator โHorsepower Calculator
Horsepower from torque and RPM
Open calculator โEngine Horsepower Calculator
Power from quarter-mile trap speed
Open calculator โTire Size Calculator
Tyre diameter, sidewall, circumference
Open calculator โAcademic & GPA
GPA Calculator
Credit-weighted GPA from your courses
Open calculator โCGPA Calculator
Cumulative GPA across semesters
Open calculator โGrade Calculator
Final grade from weighted components
Open calculator โGPA to Percentage Calculator
Convert GPA to a percentage
Open calculator โMarks Percentage Calculator
Percentage from marks obtained
Open calculator โInternet & Tech
IP Subnet Calculator
Network, broadcast, mask and host range
Open calculator โPassword Generator
Strong random passwords
Open calculator โBandwidth Calculator
Download time from size and speed
Open calculator โPPI Calculator
Screen pixel density (PPI)
Open calculator โAspect Ratio Calculator
Aspect ratio and resize dimensions
Open calculator โBase64 Encode/Decode
Encode & decode Base64
Open calculator โURL Encode/Decode
Percent-encode URLs
Open calculator โPregnancy
Due Date Calculator
Estimate your baby due date
Open calculator โPregnancy Calculator
How many weeks pregnant you are
Open calculator โOvulation Calculator
Ovulation day and fertile window
Open calculator โConception Calculator
Estimated date of conception
Open calculator โPeriod Calculator
Predict your next periods
Open calculator โPregnancy Weight Gain Calculator
Healthy pregnancy weight gain
Open calculator โEveryday & Science
Tip Calculator
Tip amount, total and split
Open calculator โSleep Calculator
Best bedtimes and wake times
Open calculator โZakat Calculator
Calculate zakat due on your wealth
Open calculator โDensity Calculator
Density, mass or volume
Open calculator โSpeed Distance Time Calculator
Solve speed, distance or time
Open calculator โGDP Calculator
GDP by the expenditure method
Open calculator โMolarity Calculator
Molar concentration of a solution
Open calculator โMolecular Weight Calculator
Molar mass from a chemical formula
Open calculator โShoe Size Converter
EU, US and UK shoe sizes
Open calculator โBra Size Calculator
Band and cup size from measurements
Open calculator โGolf Handicap Calculator
Estimate your handicap index
Open calculator โDice Roller
Roll virtual dice
Open calculator โLove Calculator
Fun compatibility score
Open calculator โWind Chill Calculator
Feels-like cold
Open calculator โHeat Index Calculator
Feels-like heat
Open calculator โDew Point Calculator
Air moisture & mugginess
Open calculator โ