Calculator, business and shipping guides
Clear answers for everyday calculations, planning, naming, nutrition and label printing.
32 guides · page 4 of 5
How to Calculate Hours Worked Between Two Times – Work Hours Calculator
Calculate hours worked between start and end times, including overnight shifts, breaks and decimal hours. Learn payroll rounding and time-zone limits.
Read the guideNew guidesHow Much Fuel Will My Car Need for a Trip? Fuel Cost Calculator
Estimate litres of fuel needed for a car trip from distance and mileage. Include return travel, traffic, detours and a realistic fuel-efficiency range.
Read the guideNew guidesHow to Calculate Electricity Cost for Any Home Appliance
Calculate electricity cost for any home appliance from wattage, hours and tariff. Learn monthly kWh, standby use, variable load and bill differences.
Read the guideNew guidesHow to Double or Triple a Recipe – Recipe Scaling Calculator
Scale a recipe up or down by multiplying every ingredient by the same factor. Learn cooking-time, pan-size, spice and measurement checks for doubled and…
Read the guideNew guidesHow to Calculate Price Per Kg, Gram and 100g – Unit Price Calculator
Calculate price per kilogram, gram or 100g to compare products fairly. Learn unit conversions, pack sizes, discounts and rounding for grocery shopping.
Read the guideNew guidesHow to Calculate Attendance Percentage for School and College
Calculate school or college attendance percentage from attended and total classes. Learn subject-level rules, minimum targets, approved leave and rounding.
Read the guideNew guidesHow to Calculate Discount, GST and Final Selling Price
Calculate discount, GST and final selling price in the correct order. Learn taxable base, inclusive and exclusive tax, rounding and invoice checks.
Read the guideNew calculatorsPercentage Calculator Online – Calculate Percentages, Increase & Decrease
Calculate percentages, percentage increase, percentage decrease and percent of a number with formulas, examples and an online percentage calculator.
Read the guideNew calculatorsAge Calculator Online – Calculate Your Exact Age From Date of Birth
Calculate exact age in years, months and days from a date of birth. Learn birthday, leap-year, reference-date and official age rules.
Read the guideNew calculatorsDate Calculator Online – Add or Subtract Days, Months & Years
Add or subtract days, months and years from a start date with clear calendar rules, leap-year examples and date-planning checks.
Read the guideNew calculatorsDate Difference Calculator – Calculate Days Between Two Dates
Calculate days between two dates with exclusive or inclusive counting. Learn leap-year, weekend and time-zone considerations for date differences.
Read the guideNew calculatorsUnit Converter Online – Convert Length, Weight, Area, Volume & More
Convert common length, weight, area and volume units online. Learn how to choose the correct dimension, factor and rounding rule.
Read the guideNew calculatorsCurrency Converter Online – Convert USD, EUR, GBP, INR & More
Convert USD, EUR, GBP, INR and other currencies with an exchange-rate estimate. Learn rate dates, fees, spreads and cross-border payment checks.
Read the guideNew calculatorsDiscount Calculator – Calculate Sale Price, Savings & Discount Percentage
Calculate sale price, savings and discount percentage from an original price. Check stacked discounts, coupons, tax and shipping before checkout.
Read the guideNew calculatorsTip Calculator Online – Calculate Tips, Tax & Total Bill Instantly
Calculate a tip, tax, total bill and per-person amount. Learn pre-tax versus post-tax tipping, service charges and rounding.
Read the guideNew calculatorsBMI Calculator Online – Calculate Your Body Mass Index
Calculate BMI from height and weight with the body mass index formula, unit conversion and important adult screening limitations.
Read the guideNew calculatorsTime Calculator – Add, Subtract & Calculate Time Duration Online
Add or subtract hours and minutes, calculate elapsed time and handle overnight work shifts with clear time-calculation rules.
Read the guideNew calculatorsLoan Calculator Online – Calculate Monthly Payments & Total Interest
Estimate loan payments, total interest and repayment from principal, rate and term. Compare scenarios while checking lender fees and variable-rate terms.
Read the guideNew calculatorsMortgage Calculator – Estimate Monthly Payments, Interest & Loan Cost
Estimate mortgage payment, interest and loan cost from home price, deposit, rate and term. Review taxes, insurance and lender fees separately.
Read the guideNew calculatorsTax Calculator Online – Estimate Your Taxes & Take-Home Amount
Estimate tax and take-home amount from income and deductions. Learn why tax year, regime, brackets, exemptions and location affect the final result.
Read the guideNew calculatorsSalary Calculator – Calculate Monthly, Annual & Hourly Pay
Convert salary between annual, monthly and hourly pay. Compare gross, net, work hours and cost-to-company assumptions before accepting an offer.
Read the guideNew calculatorsInvestment Calculator – Calculate Investment Growth & Returns Online
Estimate investment growth from starting amount, contributions, return and time. Compare scenarios while remembering that market returns are not guaranteed.
Read the guideNew calculatorsCompound Interest Calculator – Calculate Interest & Investment Growth
Calculate compound interest, final amount and growth from principal, rate, compounding frequency and time with a clear worked example.
Read the guideNew calculatorsCalorie Calculator – Calculate Daily Calorie Needs Online
Estimate daily calorie needs from age, sex, height, weight and activity. Learn maintenance calories, activity assumptions and health limitations.
Read the guideNew calculatorsFuel Cost Calculator – Calculate Petrol, Gas & Diesel Trip Costs
Calculate road-trip fuel use and cost from distance, mileage and fuel price. Compare one-way and return trips with a realistic buffer.
Read the guideNew calculatorsElectricity Cost Calculator – Estimate Appliance Energy Usage & Cost
Estimate appliance electricity use and cost from watts, hours and tariff. Learn kWh, standby power, tiered rates and practical meter checks.
Read the guideNew calculatorsDays Until Calculator – Find How Many Days Until Any Date
Find how many calendar days remain until any date. Learn inclusive counting, past dates, time zones and deadline rules.
Read the guideNew calculatorsWork Hours Calculator – Calculate Working Hours, Breaks & Overtime
Calculate working hours from start, end and breaks, including overnight shifts and overtime. Record rounding and payroll assumptions.
Read the guideNew calculatorsAttendance Calculator – Calculate Attendance Percentage & Required Classes
Calculate attendance percentage and required classes from attended and held classes. Estimate how many future classes are needed or may be missed.
Read the guideNew calculatorsMarks Percentage Calculator – Calculate Exam Percentage Instantly
Calculate exam percentage from marks obtained and maximum marks. Combine subjects, weightings and practical scores without mixing denominators.
Read the guideNew calculatorsGPA Calculator – Calculate GPA From Grades & Credit Hours
Calculate GPA from grade points and credit hours. Learn weighted grade points, semester GPA, cumulative GPA and institutional scale differences.
Read the guideNew calculatorsScientific Calculator Online – Free Advanced Math Calculator
Use a free scientific calculator for trigonometry, powers, roots, logarithms and scientific notation. Check angle mode and order of operations.
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