Calculator portal

Everyday calculations, properly organized.

Practical calculators for money, shopping, time, travel, health, home and technology — browser-based and account-free.

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44working calculators
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Finance

Loans, interest and savings · 5 tools

Finance
Loan payment calculatorEstimate monthly payments, total payment and interest for a fixed loan.
Finance
Mortgage calculatorEstimate principal-and-interest payments from price, deposit and term.
Finance
Simple interest calculatorCalculate simple interest from principal, annual rate and time.
Finance
Compound interest calculatorEstimate future value with regular compounding and optional contributions.
Finance
Savings goal calculatorEstimate the monthly saving needed to reach a target amount.

Business

Pricing, profit and planning · 6 tools

Business
VAT calculatorAdd or remove VAT from an amount.
Business
Profit marginCalculate profit and margin from cost and selling price.
Business
Markup calculatorCalculate selling price from cost and markup percentage.
Business
Commission calculatorCalculate commission earnings and the remaining amount.
Business
Break-even calculatorEstimate the units and revenue needed to cover fixed costs.
Business
ROI calculatorCompare investment gain with the original invested amount.

Shopping

Discounts, bills and tax · 6 tools

Shopping
Discount calculatorFind final price and savings after a discount.
Shopping
Multiple discount calculatorApply two discounts in sequence and find the real combined saving.
Shopping
Tip calculatorCalculate a tip and the total bill.
Shopping
Split bill calculatorSplit a bill and optional tip equally between people.
Shopping
Unit price calculatorCompare package value by calculating the price per unit.
Shopping
Sales tax calculatorAdd sales tax to a price or extract tax from a tax-inclusive total.

Date & time

Durations, workdays and countdowns · 7 tools

Date & time
Age calculatorFind age from a date of birth.
Date & time
Date differenceCount calendar days between two dates.
Date & time
Time durationFind the elapsed hours and minutes between two times.
Date & time
Add or subtract timeAdd or subtract hours and minutes from a starting time.
Date & time
Add or subtract daysMove a date forward or backward by a chosen number of days.
Date & time
Business days calculatorCount weekdays between two dates while excluding weekends.
Date & time
Countdown calculatorSee the remaining days, hours and minutes until a date and time.

Travel

Fuel, trip cost, speed and pace · 5 tools

Travel
Fuel cost calculatorEstimate fuel needed and trip fuel cost from distance and efficiency.
Travel
Fuel economy calculatorCalculate kilometres per litre and litres per 100 kilometres.
Travel
Trip cost calculatorCombine fuel, tolls and other costs and split them between travellers.
Travel
Speed, distance & timeFind one travel value when the other two are known.
Travel
Pace calculatorCalculate pace, speed and finish time from distance and duration.

Health estimates

BMI, energy and sleep estimates · 4 tools

Health estimates
BMI calculatorEstimate body mass index from height and weight.
Health estimates
BMR calculatorEstimate resting daily energy needs using age, height and weight.
Health estimates
Daily calorie estimateEstimate daily maintenance calories from BMR and activity level.
Health estimates
Sleep time calculatorPlan approximate bed or wake times using 90-minute sleep cycles.

Home & projects

Area, paint, concrete and tiles · 4 tools

Home & projects
Area calculatorCalculate rectangular floor area in square metres and square feet.
Home & projects
Paint calculatorEstimate paint litres from wall dimensions, coats and coverage.
Home & projects
Concrete volume calculatorEstimate concrete volume for a rectangular slab with optional waste.
Home & projects
Tile calculatorEstimate tile quantity from surface and tile dimensions with waste.

Technology

Electricity and data transfer · 2 tools

Technology
Electricity cost calculatorEstimate electricity use and cost from power, hours and tariff.
Technology
Data transfer timeEstimate download or transfer time from file size and connection speed.

Everyday math

Percentages, averages and ratios · 5 tools

Everyday math
Percentage calculatorCalculate a percentage of any value.
Everyday math
Percentage changeMeasure the percentage increase or decrease between two values.
Everyday math
Percentage differenceCompare two values using their average as the reference.
Everyday math
Average calculatorFind the sum, count and arithmetic mean of a number list.
Everyday math
Ratio calculatorSimplify a two-part ratio and show its decimal relationship.

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