Find a calculator.
Useful tools for the questions that come up every day.
Data Storage Converter
Convert a storage amount between bits, bytes and decimal or binary multiples.
Open calculatorData Transfer Speed Converter
100 Mbps = 12.5 MB/s at full theoretical throughput.
Open calculatorDatabase Storage Growth Calculator
Project database capacity using an observed daily growth rate.
Open calculatorDate Difference Calculator
Measure the calendar interval between two dates and the total elapsed days.
Open calculatorDays Between Dates Calculator
Count total days, weekdays and weekend days between two dates.
Open calculatorDebt Repayment Calculator
Estimate a payoff schedule for one debt with a fixed monthly payment.
Open calculatorDecimal to Fraction Calculator
0.75 = 75/100 = 3/4.
Open calculatorDiscount Calculator
Find a sale price and the total saving after one or two discounts.
Open calculatorDownload Time Calculator
Estimate the ideal transfer time for a file at a constant connection speed.
Open calculatorElectricity Cost Calculator
1,000 W for 1 hour uses 1 kWh. At 0.20 per kWh, that is 0.20 daily or 6.00 over 30 days.
Open calculatorEnergy Converter
1 kWh = 3,600,000 J; 1 food Calorie = 1 kcal = 4,184 J.
Open calculatorExtra Payment Loan Calculator
Compare a fixed-rate loan with and without an extra payment every month.
Open calculatorFlooring Calculator
A 20 m² room with 10% waste needs 22 m²; at 2.2 m² per pack this is 10 packs.
Open calculatorForce Converter
Convert force quantities while keeping force distinct from mass.
Open calculatorFraction Calculator
Add, subtract, multiply or divide two fractions using integer arithmetic.
Open calculatorFraction to Decimal Calculator
3/4 = 0.75 = 75%.
Open calculatorFrequency Converter
Convert cycles-per-second measurements between common frequency scales.
Open calculatorFuel Cost Calculator
500 km at 7 L/100 km needs 35 L. At 2 currency units per liter, fuel costs 70.
Open calculatorFuel Economy Converter
Compare fuel-consumption figures across reciprocal distance and volume conventions.
Open calculatorFuel Efficiency Calculator
500 km using 35 L gives 7 L/100 km and about 14.285714 km/L.
Open calculatorGCD & LCM Calculator
Find the greatest common divisor and least common multiple of two to ten integers.
Open calculatorGross Profit Calculator
Separate the cost of delivered goods or services from the revenue they generated.
Open calculatorHourly & Salary Calculator
Translate an hourly rate or annual salary using the paid working schedule you enter.
Open calculatorIdeal Weight Calculator
Compare historical adult reference-weight equations for a given height.
Open calculatorPopular calculators
Age Calculator
Find your age in years, months, and days on any given date.
Open calculatorAverage Calculator
Find the arithmetic mean of a list of numbers, with the sum and range shown alongside it.
Open calculatorBMI Calculator
Calculate adult BMI using metric or imperial height and weight.
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