๐ Converters
Free unit converters: length, weight, temperature, volume, area, and more. All run locally in your browser.
Length, weight, temperature, area, volume, speed, data sizes, cooking measures โ convert between units without hunting through tables. Enter a value once and see the equivalents update as you type, with sensible precision for each unit pair.
Conversion factors follow the authoritative definitions (SI, international yard and pound agreement) rather than rounded folklore. Each tool states the exact factor it uses, so you can cite the result with confidence.
Tools cover metric and imperial units, temperature scales, data and digital sizes, cooking measures, and specialty conversions such as Japanese traditional units.
๐ Everyday Unit Conversions
Angle Converter
Free online angle converter. Convert between degrees, radians, gradians, turns,
Area Converter
Convert area between square meters, square feet, acres, and hectares instantly.
Energy Converter
Free online energy converter. Convert between joules, kilojoules, calories, kilo
Force Converter
Free online force converter. Convert between newtons, kilonewtons, pound-force,
Free Frequency Converter
Free online frequency converter. Convert between Hz, kHz, MHz, GHz, RPM, and per
Gas Mileage Calculator
Calculate your carโs fuel economy. Enter distance and fuel used to get MPG and L
German Flour Type Converter
Convert German flour types instantly: ash content, typical protein, nearest US/U
Oven Mode Converter (Umluft)
Convert oven temperatures between Ober-/Unterhitze and Umluft with the 25 ยฐC rul
Free Length Converter
Convert length between meters, centimeters, feet, inches, kilometers, and miles
Free Pressure Converter
Convert pressure between pascals, bar, psi, and atmospheres instantly. Free onli
Free Speed Converter
Convert speed between km/h, mph, m/s, and knots instantly. Free online speed con
Temperature Converter
Convert temperature between Celsius, Fahrenheit, and Kelvin instantly with this
Free Volume Converter
Convert volume between liters, milliliters, gallons, cups, and cubic meters inst
Weight Converter
Convert weight and mass between kilograms, grams, pounds, and ounces instantly.
๐พ Data & File Conversion
๐ฏ Shakkanhล Japanese Units
Bu Area Converter
Convert bu (Japanese area unit = 3.306 m2 = 1 tsubo) to square meters, square fe
Cho Area Converter
Convert cho (Japanese agricultural area unit = 9917 m2) to hectares, acres, m2,
Go Volume Converter
Convert go (Japanese volume unit for rice and sake) to milliliters, liters, cups
Kan Weight Converter
Convert kan (Japanese weight unit = 3.75 kg) to kilograms, pounds, grams, and mo
Ken Length Converter
Convert ken (Japanese architectural length unit = 1.818 m) to meters, feet, and
Koku Volume Converter
Convert koku (Japanese historical volume unit = 180 L) to liters, gallons, and o
Momme Weight Converter
Convert momme (Japanese weight unit = 3.75 g) to grams, carats, ounces, and kan.
Shakkanho Unit Converter
Comprehensive shakkanho (traditional Japanese measurement) converter. Convert le
Shaku & Sun Length Converter
Convert shaku (Japanese foot = 30.3 cm) and sun (inch = 3.03 cm) to cm, inches,
Sho Volume Converter
Convert sho (Japanese 1.8L volume unit) to liters, milliliters, gallons, and go.
Tan Area Converter
Convert tan (Japanese agricultural area unit = 991.7 m2) to square meters, acres
Tatami Area Calculator
Convert tatami mats (jo) to square meters and square feet. Supports Edoma, Kyoma
To Volume Converter
Convert to (Japanese volume unit = 18 L) to liters, gallons, sho, and koku. 1 to
Tsubo Area Converter
Convert tsubo (Japanese area unit) to square meters, square feet, acres, and hec
๐ Washoku & Rice
Dashi Yield Calculator
Calculate how much kombu, katsuobushi, niboshi or dried shiitake you need for th
Japanese Rice & Water Calculator
Calculate the exact water needed for Japanese rice in a rice cooker: white, brow
Washoku Recipe Scaler
Scale any Japanese recipe from its original servings to your target servings. Co
๐พ Lookups & Reference
Japan Municipality Lookup
Decode a Japanese 5-digit municipality code (ๅธๅบ็บๆ): the first two digits are the
Japan Postal Code Lookup
Validate a Japanese 7-digit postal code, auto-convert full-width digits, and ide
Japan Prefecture Picker
Browse all 47 Japanese prefectures with JIS codes, kana, English names, capitals
Kanji Numerals Converter
Convert Arabic numbers to kanji numerals (ไธไบไธ) and formal banking numerals (ๅฃฑๅผๅ)
Cups to mL Converter
Convert US cups to milliliters and back. Get exact baking and cooking measuremen
Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius and back with our free F to C converter. Uses the
Height Converter
Convert height between feet+inches and centimeters instantly with our free heigh
Inch Calculator
Convert inches to feet, millimeters, centimeters, and yards instantly. Free onli
Frequently asked questions
Are these unit converters free?
Yes โ free, no account, entirely in your browser.
Which conversion factors do you use?
Authoritative definitions: SI units, the international yard and pound agreement and similar standards. Each tool page states the exact factor.
Why does my converted value differ slightly from another site?
Some sites round intermediate factors. These tools apply full-precision factors and round only the displayed result, which is the more accurate approach.
Do the converters work offline?
Yes. Once loaded, every tool keeps working without a connection.
Is there support for Japanese traditional units?
Yes โ a dedicated set converts shakkanhล units like shaku, tsubo and go, handy for reading Japanese floor plans and recipes.