Vehicle & Transport
Every vehicle & transport calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
3 calculators in this section
- Running Pace Converter (min/km, min/mile, km/h, mph)Convert between minutes per kilometre, minutes per mile, km/h and mph in every direction, get finish times for the mile, 5K, 10K, half and full marathon, work backwards from a goal time, and see an equivalent performance from Riegel's published model with its stated range of validity computed for your own pace.
- Tyre Size Converter205/55 R16 into section width, sidewall height, overall diameter, rolling circumference and revolutions per kilometre — and then what a size change does to the speedometer, against the one-sided tolerance UNECE R39 actually sets. Imperial and pre-1972 codes handled; load index and speed rating refused.
- Wheel Offset and Backspacing ConverterET in millimetres to backspacing in inches and back, with the half-inch-a-side rim flange allowance that decides the answer — plus what a change of offset or width does to the inboard clearance and the poke, and why a lower ET moves the wheel outward.