- CalculatorsPercentage CalculatorOpen the tool
Work 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.
- CalculatorsDiscount CalculatorOpen the tool
Final price after a discount, the percentage off, and deals like buy 1 get 1, second item 50% off, and X for Y.
- CalculatorsUnit Price CalculatorOpen the tool
Compare 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.
- Shopping Cart Calculator
- Length Converter
- Weight Converter
- Temperature Converter
- Volume Converter
- Area Converter
- Date Calculator
- Working Days Calculator
- Jerusalem Prayer Compass
- Rosh Hashanah 2026
- Yom Kippur 2026
- Zmanim Today – Daily Halachic Times
- Shabbat Times
- Jewish Holiday Times
- Jewish Calendar 2027
- Jewish Holidays 2027
- Time Zone Converter
- Age Calculator
- Volumetric Weight Calculator
- Dimensional Weight Calculator
- Chargeable Weight Calculator
- Package Girth Calculator
- CBM Calculator
- Pallet Calculator
- Shipping Cost Calculator
- BMI Calculator
- Calorie Calculator (TDEE)
- Timestamp Converter
- Fraction Calculator
- GCD and LCM Calculator
- Shoe Size Converter
- Root and Power Calculator
- Ratio Calculator
- Average Calculator
- Standard Deviation Calculator
- Random Number Generator
- Number Base Converter
- Roman Numeral Converter
- Pregnancy Due Date Calculator
- Tip Calculator
- Split Bill Calculator
- Simple Interest Calculator
- Sleep Cycle Calculator
- Running Pace Calculator
- Countdown Timer
- Pomodoro Timer
- Random Decision Maker
- Random Name Picker
- Data Storage Converter
- Pressure Converter
- Speed Converter
- Ideal Weight Calculator
- Body Fat Calculator
- Day of the Week Calculator
- Time Duration Calculator
- Timesheet Calculator
- Meeting Cost Calculator
- Typing Speed Test
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.
Guides
Percentage Points vs Percent: The Difference With Real Examples
When a rate goes from 2% to 5%, is that 3% or 150%? Percentage points versus percent change, basis points, ECB rate examples and which one to use when.
When Does Shabbat or a Jewish Holiday End? Tzeit Opinions Compared
8.5°, 7.083°, 42, 50 and 72 minutes after sunset: where each end-of-Shabbat time comes from, computed for four cities on three Saturdays, and why the gap changes.
Everyday Percentage Formulas, With Worked Examples
The six percentage formulas behind almost every everyday question, worked examples for shopping, tips, raises and interest, and the mistakes people make most often.
Percentage Difference vs Percentage Change: Which One to Use
When to use percentage change and when percentage difference, both formulas on the same numbers, a decision table, percent error and the edge cases where each breaks.
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.