Converter tool
Convert length, weight, temperature, and more
Convert length, weight, temperature, area, volume, speed, time, and digital storage in your browser. Includes US vs Imperial gallons and kB vs KiB. Nothing is uploaded.
Pick a category, enter a value, and convert between units. Results update as you type. All math stays on your device.
- Runs locally
- No uploads
- Instant
- Free
All conversions in this category
Kitchen and liquid units use US customary sizes unless marked Imperial. US gallon and Imperial gallon are different.
kB uses 1000 bytes (decimal). KiB uses 1024 bytes (binary).
Horsepower here is mechanical horsepower (≈ 745.7 W), not metric or electrical hp.
Unit conversion runs in your browser. Values are not uploaded.
How it works
- 01 Choose a category such as length, weight, or temperature.
- 02 Enter a value and select the From and To units.
- 03 Copy the result, or open all conversions in that category.
Why NEXNARA
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Private
Your data stays in your browser.
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Instant
Results appear immediately.
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No uploads
Nothing is sent to a NEXNARA server.
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Works anywhere
No installation required.
Learn more
How unit conversion works
Most units scale from a shared base (for example, the metre). Temperature is different: Celsius, Fahrenheit, and Kelvin also shift by an offset, not only a multiplier.
How to convert units
Choose a category, enter a number, and pick From and To. Swap exchanges the units and uses the current result as the new input. Open All conversions to see every unit in that category.
Metric vs Imperial
Metric units (SI) use tens: mm, cm, m, km, g, kg. Imperial and US customary units include inches, feet, miles, pounds, and gallons. Factors here use exact international definitions, such as 1 in = 2.54 cm.
US vs Imperial volume
A US gallon is about 3.785 L. An Imperial gallon is 4.54609 L. Cups, pints, and fluid ounces on this page are US customary, not Imperial or metric cups.
Celsius, Fahrenheit, and Kelvin
Water freezes at 0°C / 32°F / 273.15 K and boils at 100°C / 212°F at standard pressure. −40°C equals −40°F. Kelvin starts at absolute zero; values below 0 K are rejected.
kB vs KiB
Decimal prefixes: 1 kB = 1000 bytes, 1 MB = 1000 kB. Binary prefixes: 1 KiB = 1024 bytes, 1 MiB = 1024 KiB. Drives are often advertised in decimal GB; operating systems may show gibibytes.
Calorie and kilocalorie
This page uses the thermochemical calorie (4.184 J). Food “Calories” on labels are kilocalories (kcal). 1 kcal = 1000 cal.
Privacy
Nothing is sent to NEXNARA or to an external conversion API. Values are not stored in cookies or local storage for this tool.
FAQ
How many cm are in an inch?
Exactly 2.54 cm. That international inch is used here.
How many pounds are in a kilogram?
About 2.20462 lb. One pound is exactly 0.45359237 kg.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. 0°C is 32°F; 100°C is 212°F.
Is a US gallon the same as an Imperial gallon?
No. US gallon ≈ 3.785 L. Imperial gallon = 4.54609 L. Pick the labelled unit.
What is the difference between kB and KiB?
kB is 1000 bytes. KiB is 1024 bytes. MB/GB are decimal; MiB/GiB are binary.
How accurate are the conversions?
Linear units use exact SI and international factors. Results are rounded only for display, not in the internal math.
Are calculations done locally?
Yes. They run in your browser. There is no server and no exchange-rate or other API.
Why are month and year missing from time?
Months and years are not fixed lengths. This page converts millisecond through week only.
Which horsepower is used?
Mechanical horsepower, about 745.7 watts. Metric hp is different.
Can I convert currency?
No. Currency needs live rates and is not part of this tool.