Converters & File Tools
This category brings together converters for common everyday tasks. Convert money with an editable rate table, switch length, weight, temperature, volume and speed between metric and imperial units, or solve DC and AC values with the watts, amps and volts calculator. The tools process inputs in your browser, so values stay on your device. For file conversions, the PDF category handles PDF creation, compression and Markdown conversion; Developer has data formats such as JSON, CSV, XML and YAML, while Image has image formats. Conversion results depend on the values and files you provide, so check units and output before using them in a consequential setting. The reference table below lists exact definitions for commonly used length, weight and temperature conversions. Currency rates are editable rather than live, and electrical calculations are estimates rather than wiring advice.
Tools in this category
3 tools- Currency Converter Converts between major currencies using an editable rate table, so you can enter the rate from your bank or a source you trust. It works offline and does not fetch live market data.
- Unit Converter Converts length, weight, temperature, volume and speed between metric and imperial units. Best for recipes, travel, shopping and quick engineering or schoolwork checks.
- Watts, Amps & Volts Calculator Solves for watts, amps or volts in DC, single-phase and three-phase circuits with power factor, and converts kW to kVA. Useful for sizing appliances and generators as an estimate, not for wiring decisions.
Which tool should I use?
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Need to convert money?
Currency Converter: Edit the rate to match your source and convert amounts between currencies.
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Converting miles, pounds, degrees or litres?
Unit Converter: Pick the quantity, choose the two units and read the result instantly.
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Working out watts, amps or volts?
Watts, Amps & Volts Calculator: Choose DC, single-phase or three-phase, enter two values and read the third, or convert kW to kVA.
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Converting image formats?
Image Format Converter: Batch convert between JPG, PNG, WebP and AVIF in the Image tools.
Exact conversion factors
| Relationship | Value |
|---|---|
| 1 inch | 2.54 centimeters |
| 1 foot | 0.3048 meters |
| 1 yard | 0.9144 meters |
| 1 mile | 1.609344 kilometers |
| 1 pound | 0.45359237 kilograms |
| 1 ounce | 28.349523125 grams |
| Fahrenheit | °C × 9/5 + 32 |
| Kelvin | °C + 273.15 |
These are the internationally agreed definitions, not rounded approximations.
More tools you may need
- JSON to CSV Converter — Developer: convert JSON to CSV, and also CSV to JSON, XML or YAML.
- Image Format Converter — Image: convert JPG, PNG, WebP and AVIF, including batches.
- Markdown to PDF & HTML Converter — PDF: export Markdown as a PDF or standalone HTML file.
- Time Zone Converter — Date & Time: convert a date and time between time zones.
Frequently asked questions
Does the currency converter use live exchange rates?
No. It uses a rate table that you can edit, so results depend on the rates you enter. Check a bank or market source for the rate you need.
Which units can I convert?
The unit converter covers length, weight, temperature, volume and speed, in both metric and imperial or US customary units.
Why are some results shown with many decimals?
Conversions use the full factor and show a precise value. Round the result yourself to the precision your task needs.
Where are PDF, JSON and image conversions?
PDF creation, compression and Markdown conversion are in PDF Tools. Developer has data formats, and Image has image formats.