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Convert as you type with precision up to six decimal places.
A clear measurement layer · built for trust
Convert any measurement.
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Type your question naturally — “5 km to miles” or “100 celsius to F” — and Nexluna returns a precise, understandable, copy-ready number. No guessing, no account, and offline-ready.
Instant resultsDeterministic mathWorks offline
Deterministic math100+Nexluna supports 14 measurement categories and more than 100 units.
km→mi
Everyday measurement
14 conversion categories
Choose a category and get a direct, transparent result. Each page is generated from the same canonical unit data.
LengthConvert distances between metric and customary units with an instant, deterministic result. Enter a ...WeightMove between metric and customary weight units with a deterministic result that is easy to read and ...AreaCompare land and surface areas across metric, customary, and regional units while keeping Arabic lan...VolumeConvert capacity and volume between metric, US customary, and imperial units with transparent factor...TemperatureConvert temperature scales using the correct offset and ratio formulas — no approximation layer or e...Digital dataSwitch between decimal and binary data systems while keeping the selected convention visible in the ...SpeedCompare travel and motion speeds across common metric and customary units with an instant result....TimeTranslate durations between everyday time units with a deterministic base-second calculation....PressureConvert pressure readings used in science, engineering, weather, and everyday measurements....EnergyTranslate energy values between scientific, nutrition, and electricity units using stable canonical ...PowerCompare electrical and mechanical power ratings with clear unit labels and deterministic results....AngleMove between geometric angle units using exact ratios based on a full turn....Fuel economyCompare fuel economy conventions while keeping US and imperial gallons separate and explicit....FrequencyConvert repeating-event rates across SI prefixes and RPM with direct, deterministic factors....
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Where the numbers come from
Accuracy you can verify yourself
Don’t take our word for it — these are the sources behind every conversion factor and how they are tested.
168automated accuracy checks
Every conversion factor is compared against its official value before release, plus a consistency check across all project files.
SI / BIPMstandard unit reference
Length, mass, pressure and energy follow the internationally agreed definitions (for example: 1 inch = 0.0254 m exactly).
Arabic land unitsfeddan · kirat · sahm · dunam
The Egyptian feddan is 4,200.833 m² — not the acre (4,046.856 m²). That 3.8% gap is a mistake many tools and AI models still make.
Open sourcereview the code yourself
The conversion engine and its test suite are published in full on GitHub, so anyone can audit a factor or report an error.
Reference sources: BIPM · NIST · Feddan · Dunam. Found a number that looks wrong? Report it here.