Area Calculator
Calculate the area of common 2D shapes with formulas, unit-aware inputs and clear results.
Open tool →Tools
Calculators
Calculate percentages, dates, finance estimates, geometry, measurements and everyday quantities.
Online Scientific Calculator
Use a free online scientific calculator for arithmetic, trigonometry, powers, roots, logarithms and percentages.
Open tool →Calendar Date Calculator
Add or subtract days from a date, or calculate the calendar interval between two dates.
Open tool →Deposit Interest Calculator
Calculate deposit interest and maturity value using simple interest or daily compounding over an exact date range.
Open tool →Car Loan Calculator
Estimate auto-loan monthly payments, total interest and total repayment from price, term, rate and down payment.
Open tool →EV Charging Cost Calculator
Estimate the cost of charging an EV from battery capacity, state of charge and electricity price.
Open tool →Multi-Discount Calculator
Calculate final price, savings and effective discount for single or successive percentage discounts.
Open tool →Date and Time Duration Calculator
Calculate the exact duration between two dates and times in years, months, weeks, days and smaller units.
Open tool →EV Trip Cost Calculator
Estimate EV energy cost per 100 km and for a trip using vehicle consumption, distance and electricity price.
Open tool →Gold Investment Calculator
Estimate gold investment profit, loss and return after buy price, sell price, quantity and transaction costs.
Open tool →Child Height Predictor
Estimate a child’s adult height from parental height using common prediction methods and unit conversions.
Open tool →Hours Calculator
Calculate hours and minutes between two times, including overnight shifts and optional break deductions.
Open tool →List Randomizer
Shuffle names, numbers or other items into a random order directly in your browser.
Open tool →MB to Bytes Converter
Convert megabytes to bytes and compare decimal MB with binary MiB to avoid common storage-size confusion.
Open tool →Chmod Calculator
Convert Linux read, write and execute permissions between checkboxes, symbolic notation and octal values.
Open tool →Screen PPI Calculator
Calculate screen pixel density from resolution and diagonal size and understand the difference between PPI and DPI.
Open tool →Pixels, Inches and Centimeters Converter
Convert image dimensions between pixels, inches and centimeters using an explicit PPI or DPI value.
Open tool →Meters to Miles Converter
Convert meters to miles or miles to meters with adjustable precision and the conversion formula.
Open tool →Millimeters to Centimeters Converter
Convert millimeters to centimeters or centimeters to millimeters instantly.
Open tool →Percent Off Calculator
Calculate sale price and money saved from an original price and percentage discount.
Open tool →Percentage Calculator
Solve common percentage questions, including percent of a number, percentage difference and percentage change.
Open tool →Percentage Increase Calculator
Increase a number by a percentage or calculate growth from an original value to a new value.
Open tool →Shelf Life Date Calculator
Calculate expiration and near-expiry dates from a production date and stated shelf-life duration.
Open tool →Smoking Cost Calculator
Estimate daily, monthly, yearly and long-term cigarette spending from usage and pack price.
Open tool →Tip and Bill Split Calculator
Calculate gratuity, total bill and per-person amount using a custom tip rate and group size.
Open tool →Volume Calculator
Calculate the volume of common 3D shapes with formulas, unit-aware inputs and clear results.
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