Calculators
Fast, accurate calculators for everyday and business math: percentages, discounts, unit prices, unit and temperature conversions, and shipping weights. Everything runs in your browser.
- Percentage CalculatorWork out percentages fast: what is X% of a number, what percent one number is of another, the percentage change between two values, and adding or subtracting a percentage from a number.OpenOpen the tool
- Discount CalculatorFinal price after a discount, the percentage off, and deals like buy 1 get 1, second item 50% off, and X for Y.OpenOpen the tool
- Unit Price CalculatorCompare two products by price per 100 g, per kg, per 100 ml, per liter, or per unit, and see which one is cheaper. Runs in your browser.OpenOpen the tool
- Shopping Cart CalculatorAdd items with price, quantity, and an optional discount to total your cart, plus optional shipping and tax. Runs in your browser.OpenOpen the tool
- Length ConverterConvert length units in your browser: inches to cm, feet to cm, meters to feet, cm to inches, and more. Fast, accurate, and runs entirely on your device.OpenOpen the tool
- Weight ConverterConvert weight and mass units in your browser: grams, kilograms, milligrams, metric tons, ounces, and pounds. Instant result, no sign-up, nothing stored.OpenOpen the tool
- Temperature ConverterConvert temperature between Celsius, Fahrenheit, and Kelvin. Instant result in your browser, no signup, nothing saved.OpenOpen the tool
- Volume ConverterConvert volume units in your browser: milliliters, liters, cubic centimeters, cubic meters, teaspoons, tablespoons, metric and US cups, US fluid ounces, and US gallons. Instant result, nothing leaves your device.OpenOpen the tool
- Area ConverterConvert area between square meters, square feet, acres, hectares, square kilometers, square yards, and more. Instant result in your browser, nothing is uploaded.OpenOpen the tool
- Date CalculatorDate calculator: count days between two dates, add or subtract days from a date, and count down to a date. Runs in your browser, no data stored.OpenOpen the tool
- Time Zone ConverterConvert a time between time zones worldwide, see the hour difference, and plan a meeting across 2 to 5 zones. Runs in your browser with IANA data, nothing leaves your device.OpenOpen the tool
- Age CalculatorCalculate exact age from a birth date, the difference between two dates, or the days until the next birthday. Everything runs in your browser, no signup.OpenOpen the tool
- Volumetric Weight CalculatorCalculate a parcel’s volumetric weight from length × width × height ÷ a divisor (5000 or 6000 cm³/kg), with metric or imperial units. Runs in your browser.OpenOpen the tool
- Dimensional Weight CalculatorCalculate a parcel’s dimensional (DIM) weight from length × width × height ÷ a divisor (139 or 166 in³/lb), with imperial or metric units. Runs in your browser.OpenOpen the tool
- Chargeable Weight CalculatorFind the chargeable (billable) weight (the greater of actual weight and volumetric weight) with metric or imperial units. Runs in your browser.OpenOpen the tool
- Package Girth CalculatorCalculate parcel girth (2 × (width + height)) and length + girth, used for carrier size limits. Metric or imperial. Runs in your browser.OpenOpen the tool
- CBM CalculatorCalculate the cubic meters (CBM) of a carton and a full shipment from its dimensions and quantity. Runs in your browser.OpenOpen the tool
- Pallet CalculatorEstimate how many cartons fit on a pallet and how many pallets a shipment needs, from box and pallet sizes. Runs in your browser.OpenOpen the tool
- Shipping Cost CalculatorEstimate a shipment cost from the chargeable weight and your own rate per kg. No carrier lookup, just your assumptions. Runs in your browser.OpenOpen the tool
- Timestamp ConverterConvert a Unix timestamp to a human date and back. Seconds and milliseconds, local time and UTC, in your browser.OpenOpen the tool
Why Calculators on Tooleem
This category collects quick, single-purpose calculators you can open and use in seconds: percentage and discount math, unit price comparisons, temperature and length, weight, volume, and area conversions, plus time-zone and timestamp helpers.
It also includes a shipping cluster for online sellers and importers: volumetric and dimensional (DIM) weight, chargeable weight, and package girth. These are educational estimates, since carriers use different divisors and rounding.
Every tool runs entirely in your browser. Nothing you type is uploaded or stored, there is no sign-up, and each tool shows the formula it uses so you can check the result.
Where to next
Calculators questions
Are the calculators free?
Yes. Every calculator is free, with no sign-up and no usage limit.
Is anything I type stored?
No. Each calculator runs in your browser. The numbers you enter are not uploaded to a server or saved.
Do the shipping weight tools match my carrier exactly?
Not necessarily. They are educational estimates. Carriers use different divisors and rounding, so check your carrier’s current rules for an exact figure.