Free Online Tools & Calculators
Fast, simple and free online calculators, converters and utility tools. No signup required.
Popular tools
A starting point while the site builds up real usage data.
- Percentage CalculatorFind a percentage of a number, a share of a total, or a percentage change.
- Discount CalculatorFind the final price and total saving from one or two discounts.
- BMI CalculatorCalculate body mass index and see the healthy weight range for your height.
- Tip CalculatorCalculate a tip, split the bill, and round the total to a clean number.
- Age CalculatorCalculate an exact age in years, months and days from a date of birth.
- Compound Interest CalculatorProject savings growth with any compounding frequency and regular deposits.
Calculators
View all calculatorsPercentages, loans, interest, health and date calculations.
- Percentage CalculatorFind a percentage of a number, a share of a total, or a percentage change.
- Discount CalculatorFind the final price and total saving from one or two discounts.
- BMI CalculatorCalculate body mass index and see the healthy weight range for your height.
- Tip CalculatorCalculate a tip, split the bill, and round the total to a clean number.
- Age CalculatorCalculate an exact age in years, months and days from a date of birth.
- Simple Interest CalculatorCalculate interest that is charged only on the original amount.
Converters
View all convertersLength, weight, temperature, volume, speed, data and more.
- Length ConverterConvert between metric and imperial lengths with exact factors.
- Weight ConverterConvert between kilograms, pounds, stone, ounces and tonnes.
- Temperature ConverterConvert between Celsius, Fahrenheit, Kelvin and Rankine.
- Area ConverterConvert between square metres, square feet, acres and hectares.
- Volume ConverterConvert litres, gallons, pints and cups — US and imperial kept separate.
- Speed ConverterConvert between km/h, mph, metres per second and knots.
Text Tools
View all text toolsCount, clean, sort, reformat and transform text in your browser.
- Word CounterCount words and characters with reading time, as you type.
- Character CounterCount characters against common field and post limits.
- Sentence CounterCount sentences and see the average words per sentence.
- Paragraph CounterCount paragraphs and lines, with average paragraph length.
- Case ConverterConvert text between eleven case formats, including programming cases.
- Remove Duplicate LinesRemove repeated lines from a list, keeping the original order.
Developer Tools
View all developer toolsJSON, Base64, URL encoding, UUIDs, timestamps and JWT inspection.
- JSON FormatterFormat JSON with indentation and pinpoint syntax errors.
- JSON ValidatorCheck JSON syntax and see exactly where an error is.
- JSON MinifierStrip whitespace from JSON and see the bytes saved.
- Base64 EncoderEncode text to Base64, with full Unicode support.
- Base64 DecoderDecode Base64 to text, standard or URL-safe.
- URL EncoderPercent-encode text for URLs, by component or whole address.
What this site is
Toolore is a collection of 55 small, single-purpose tools: calculators, unit converters, and utilities for working with text and data formats. Each one does one job and shows the method behind its answer, so you can check the result rather than take it on trust.
Everything runs in your browser. Nothing you type is uploaded, and there is no account to create, nothing to install, and no limit on how often you can use a tool.
Common questions
Do I need an account to use these tools?
No. There is no signup, no login and no limit. Open a tool and use it.
Is anything I type sent to a server?
No. Calculators, converters, text tools and developer tools all run entirely in your browser. The values you enter never leave your device.
Are the tools free?
Yes. The site is free to use and is funded by advertising, which is kept out of the way of the tools themselves.
How accurate are the results?
The formulas and conversion factors are documented on every page so you can check them. Where a result depends on an assumption — a compounding convention, a rounding rule, a definition that differs by country — the page states the assumption rather than hiding it.
Can I use these results for financial or medical decisions?
Treat them as estimates. The financial tools use standard formulas but cannot know your specific fees, taxes or terms, and the health tools are general screening figures, not medical advice.