# BQTools Convert > A static, browser-first conversion toolkit for units, engineering measurements, electrical quantities, flow, viscosity, photometry, cooking measures, data/storage, bandwidth, fixed time durations, timestamps, time zones, radioactive activity, radiation-dose units and reference/custom currency rates. Canonical site: [BQTools Convert](https://convert.bqtools.com/) ## Primary interfaces - [Universal command converter](https://convert.bqtools.com/) - [Unit converter and curated directory](https://convert.bqtools.com/converters/) - [Cooking converter](https://convert.bqtools.com/cooking/) - [Time unit converter](https://convert.bqtools.com/time-units/) - [Download time calculator](https://convert.bqtools.com/download-time-calculator/) - [Unix timestamp converter](https://convert.bqtools.com/unix-timestamp/) - [Timezone converter and overlap tool](https://convert.bqtools.com/timezone-converter/) - [Currency converter](https://convert.bqtools.com/currency-converter/) - [Radioactive activity converter](https://convert.bqtools.com/radioactivity/) - [Radiation dose converter](https://convert.bqtools.com/radiation-dose/) - [Developer and agent access guide](https://convert.bqtools.com/developers/) ## International kitchen conversions - [Cups to mL](https://convert.bqtools.com/cups-to-ml/) - [mL to cups](https://convert.bqtools.com/ml-to-cups/) - [Tablespoons to mL](https://convert.bqtools.com/tablespoons-to-ml/) - [mL to tablespoons](https://convert.bqtools.com/ml-to-tablespoons/) - [Teaspoons to mL](https://convert.bqtools.com/teaspoons-to-ml/) - [mL to teaspoons](https://convert.bqtools.com/ml-to-teaspoons/) - [Cups to tablespoons](https://convert.bqtools.com/cups-to-tablespoons/) - [Tablespoons to teaspoons](https://convert.bqtools.com/tablespoons-to-teaspoons/) The full Cooking converter distinguishes US customary, metric, Australian and Imperial spoon/cup conventions. Unqualified cup/tablespoon/teaspoon pair pages use US customary values and disclose that choice. Ingredient volume is not converted universally to grams or kilograms because flour, sugar, butter, water and other ingredients have different densities and packing behavior. ## Expanded engineering and electrical coverage - [Acceleration](https://convert.bqtools.com/acceleration/) - [Electric charge](https://convert.bqtools.com/electric-charge/) - [Electric current](https://convert.bqtools.com/electric-current/) - [Voltage](https://convert.bqtools.com/voltage/) - [Electrical resistance](https://convert.bqtools.com/resistance/) - [Capacitance](https://convert.bqtools.com/capacitance/) - [Inductance](https://convert.bqtools.com/inductance/) - [Volumetric flow rate](https://convert.bqtools.com/flow-rate/) - [Dynamic viscosity](https://convert.bqtools.com/dynamic-viscosity/) - [Kinematic viscosity](https://convert.bqtools.com/kinematic-viscosity/) - [Illuminance](https://convert.bqtools.com/illuminance/) - [Luminance](https://convert.bqtools.com/luminance/) These categories remain dimension-safe. Volume flow is not directly converted to mass flow without density; dynamic viscosity is not directly converted to kinematic viscosity without density; and lux, lumen, candela and luminance units are not treated as interchangeable quantities. ## High-demand unit converters - [Millimeters to inches](https://convert.bqtools.com/mm-to-inches/) - [Kilograms to pounds](https://convert.bqtools.com/kg-to-lbs/) - [Celsius to Fahrenheit](https://convert.bqtools.com/celsius-to-fahrenheit/) - [Centimeters to inches](https://convert.bqtools.com/cm-to-inches/) These canonical converter pages combine the interactive calculator with the conversion formula, common values, practical context and concise answers to “how to convert” questions. Separate thin how-to URLs are intentionally not created. ## Byte conversion and decoding - [Bytes to GB](https://convert.bqtools.com/bytes-to-gb/) - [Bytes to MB](https://convert.bqtools.com/bytes-to-mb/) - [Bytes to KB](https://convert.bqtools.com/bytes-to-kb/) - [Bytes to TB](https://convert.bqtools.com/bytes-to-tb/) - [Bytes to bits](https://convert.bqtools.com/bytes-to-bits/) - [Bytes to string decoder](https://convert.bqtools.com/bytes-to-string/) Decimal storage pages use SI definitions: 1 KB = 1,000 bytes, 1 MB = 1,000,000 bytes, 1 GB = 1,000,000,000 bytes and 1 TB = 1,000,000,000,000 bytes. Binary IEC units such as KiB, MiB, GiB and TiB remain distinct. Bytes-to-string decoding requires an explicit text encoding and is not treated as storage-unit arithmetic. ## Time-unit conversions - [Seconds to minutes](https://convert.bqtools.com/seconds-to-minutes/) - [Minutes to hours](https://convert.bqtools.com/minutes-to-hours/) - [Hours to days](https://convert.bqtools.com/hours-to-days/) - [Days to weeks](https://convert.bqtools.com/days-to-weeks/) - [Milliseconds to seconds](https://convert.bqtools.com/milliseconds-to-seconds/) The time-duration converter handles fixed elapsed durations. Calendar months are not assigned one fixed number of seconds because month length varies. ## Context-dependent “units” searches - [Why generic units cannot always be converted to mL](https://convert.bqtools.com/units-to-ml/) - [Why generic units cannot always be converted to mg](https://convert.bqtools.com/units-to-mg/) - [Insulin units to mL: why concentration matters](https://convert.bqtools.com/insulin-units-to-ml/) - [Gas units to kWh calculator](https://convert.bqtools.com/gas-units-to-kwh/) - [How to convert units in Excel](https://convert.bqtools.com/convert-units-in-excel/) The site does not invent a universal conversion from an unspecified “unit” to volume or mass. Medication-related guidance is informational and does not calculate or recommend an insulin dose. Gas-energy conversion requires meter basis, calorific value and correction inputs rather than one hidden constant. ## Becquerel activity conversions - [Bq to Ci](https://convert.bqtools.com/bq-to-ci/) - [Bq to microcurie / µCi](https://convert.bqtools.com/bq-to-uci/) - [Bq to mCi](https://convert.bqtools.com/bq-to-mci/) - [Bq to pCi](https://convert.bqtools.com/bq-to-pci/) - [Bq to MBq](https://convert.bqtools.com/bq-to-mbq/) - [Bq to dpm](https://convert.bqtools.com/bq-to-dpm/) - [Bq to GBq](https://convert.bqtools.com/bq-to-gbq/) - [Why Bq cannot be converted directly to Sv](https://convert.bqtools.com/bq-to-sv/) Activity and dose are intentionally kept as different dimensions. Bq, Ci and dpm describe radioactive activity. Sv describes dose equivalent/effective dose. The site does not fabricate a universal Bq-to-Sv multiplier. ## Machine-readable data - [Centralized unit registry](https://convert.bqtools.com/data/units.json) - [Converter discovery index](https://convert.bqtools.com/data/search-index.json) - [Dated currency reference data](https://convert.bqtools.com/data/currency-reference.json) ## Command URLs The homepage accepts a local query parameter without changing its canonical URL. Example: [Convert 100 km to miles](https://convert.bqtools.com/?q=100+km+to+miles) ## Discovery - [robots.txt](https://convert.bqtools.com/robots.txt) - [Sitemap index](https://convert.bqtools.com/sitemap.xml) ## Reliability notes Deterministic unit conversions are calculated locally from the published unit registry. Regional cooking units are labeled by standard rather than silently treated as equivalent. Decimal SI storage symbols (KB, MB, GB, TB) remain distinct from binary IEC symbols (KiB, MiB, GiB, TiB). SI prefix capitalization is preserved where it changes meaning, including MBq (megabecquerel) versus mBq (millibecquerel). Currency values are labeled reference/custom/cached according to their source; unsupported market values are not fabricated. Browser timezone results depend on the IANA timezone data supplied by the visitor's browser. ## Practical automotive pressure - [Tire Pressure Converter](https://convert.bqtools.com/tire-pressure/) — PSI, kPa and bar unit conversion. Use the vehicle manufacturer’s cold tire-pressure placard or owner’s manual for the target pressure; reference conversion values are not recommendations. ## Mach and speed of sound Mach is context-dependent: it is the ratio of object speed to the local speed of sound. BQ Convert does not publish one universal Mach-to-mph or Mach-to-km/h factor. Use the [Speed converter](https://convert.bqtools.com/speed/) for deterministic speed units and provide an appropriate local speed-of-sound assumption for Mach calculations. - [Canonical route manifest](https://convert.bqtools.com/data/routes.json)