Simple Daily Calculators

Calculator library

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Find practical calculators for everyday money, home, car, internet, date and business questions.

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Money Discounts, VAT and savings tools. Home & Utilities Electricity and home bill tools. Car Fuel costs and mileage tools. Internet & Tech Speed, downloads and data tools. Time & Date Dates, work hours and duration tools. Business Profit, ROI and markup tools.

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70 tools
Percentage CalculatorCalculate percentages, increases, decreases and comparisons. › Discount CalculatorFind discount amount and final price after discount. › VAT CalculatorAdd or remove VAT from a price. › Fuel Cost CalculatorEstimate trip cost from distance, consumption and fuel price. › Electricity Cost CalculatorCalculate appliance electricity cost from watts, hours and rate. › Download Time CalculatorEstimate download time from file size and internet speed. › Data Usage CalculatorEstimate daily or monthly internet data usage. › Date Difference CalculatorCalculate the difference between two dates. › Work Hours CalculatorCalculate daily and weekly work hours after breaks. › Savings Goal CalculatorCalculate how much to save each month to reach a goal. › Loan Payment CalculatorEstimate monthly loan payments from amount, rate and term. › Profit Margin CalculatorCalculate profit, margin percentage and markup. › Price Per Unit CalculatorCompare products by price per item, kg, liter or unit. › Tip CalculatorCalculate tip amount and split the bill. › Compound Interest CalculatorEstimate future value with compound interest. › Markup CalculatorCalculate selling price from cost and markup. › Break Even CalculatorFind how many units you need to sell to break even. › Business Revenue CalculatorEstimate revenue from price, sales volume and period. › Time Duration CalculatorCalculate hours and minutes between two times. › Age CalculatorCalculate age in years, months and days. › Countdown CalculatorCalculate time remaining until a future date. › Overtime CalculatorEstimate overtime hours and overtime pay. › Room Area CalculatorCalculate floor or wall area from room dimensions. › Paint CalculatorEstimate how much paint you need. › Water Usage CalculatorEstimate household water use and cost. › Heating Cost CalculatorEstimate heating energy cost. › Internet Speed ConverterConvert Mbps, MB/s, Gbps and Kbps. › File Size ConverterConvert KB, MB, GB and TB. › Screen Time CalculatorEstimate daily, weekly and monthly screen time. › Fuel Consumption CalculatorCalculate L/100 km, km/L and MPG from distance and fuel used. › Simple Interest CalculatorCalculate simple interest and final amount. › Sales Tax CalculatorAdd sales tax to a price. › Reverse Sales Tax CalculatorRemove sales tax from a total price. › Monthly Budget CalculatorEstimate monthly expenses and remaining money. › Rent Split CalculatorSplit rent and utilities between people. › Pay Raise CalculatorCalculate new pay after a raise. › Hourly to Salary CalculatorConvert hourly rate to annual salary. › Salary to Hourly CalculatorConvert annual salary to hourly rate. › Debt Payoff CalculatorEstimate how long debt payoff may take. › Bill Split CalculatorSplit a bill with tax and tip. › Light Bulb Cost CalculatorEstimate lighting electricity cost. › AC Running Cost CalculatorEstimate air conditioner electricity cost. › Refrigerator Cost CalculatorEstimate fridge electricity cost. › Laundry Cost CalculatorEstimate laundry energy and water cost. › Water Heater Cost CalculatorEstimate hot water energy cost. › Flooring CalculatorEstimate flooring area with waste. › Tile CalculatorEstimate number of tiles needed. › Concrete Volume CalculatorCalculate concrete volume for slabs. › Mileage CalculatorCalculate distance and fuel efficiency. › Trip Time CalculatorEstimate travel time from distance and speed. › Cost Per Mile CalculatorCalculate driving cost per mile or kilometer. › EV Charging Cost CalculatorEstimate electric vehicle charging cost. › Fuel Savings CalculatorCompare old and new fuel consumption. › Parking Cost CalculatorCalculate parking cost by hour and day. › Lease Mileage CalculatorEstimate lease mileage overage. › Upload Time CalculatorEstimate how long an upload will take. › Video Storage CalculatorEstimate video file size from bitrate. › Streaming Data CalculatorEstimate streaming data usage. › Aspect Ratio CalculatorCalculate proportional image or video size. › PPI CalculatorCalculate screen pixel density. › Cloud Storage Cost CalculatorEstimate cloud storage cost. › Business Days CalculatorCount weekdays between two dates. › Days Until CalculatorCalculate days until a date. › Days From Date CalculatorAdd days to a date. › Months Between Dates CalculatorEstimate months between two dates. › Sleep Duration CalculatorCalculate sleep time between two times. › ROI CalculatorCalculate return on investment. › Conversion Rate CalculatorCalculate conversions as a percentage. › CPA CalculatorCalculate cost per acquisition. › Payment Fee CalculatorEstimate payment processor fees. ›

Why this calculator library is useful

Each page is designed as a small self-contained tool. You can calculate a value, check the formula, see examples and move to related calculators without searching the whole site again.

The library is intentionally focused on everyday calculations: prices, bills, data, dates, car costs, working time and small business numbers.

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