Conversion

Convert MPG to L/100 km or reverse, with US or UK gallon choice, km/L output, and clear better-or-worse notes.

Convert joules, kWh, calories, BTU, therms, and more with a clear energy conversion calculator and optional unit breakdown.

Convert dimes to dollars or dollars to dimes, with cents, whole-dollar breakdown, and simple rounding help for reverse conversions.

Convert compatible units and check a factor-label chain that shows how the starting unit cancels.

Convert density units fast and compare the same value in kg/m^3, g/cm^3, and lb/ft^3 for an easy scale check.

Convert dBm to watts and milliwatts, or convert watts, mW, and uW to dBm with optional voltage results.

Test your clicks per second, see average and peak CPS, and track your best score for each test length on this device.

Convert common CGS and SI units by quantity, with matched unit pairs and clear notes for special CGS names like dyne and gauss.

Convert cents to dollars fast, with whole dollars, leftover cents, and an optional coin mix for an easy money check.

Convert natural gas use from CCF to therms, work backward from therms, or check billed therms with a pressure factor.