Biology calculators

Estimate area covered per hour and moving time from implement width, travel speed and overlap, with acre and hectare conversion.

Calculate exponential doubling time and continuous growth rate from a rising cell count or concentration measured over a positive time interval.

Balance cell concentration and volume before and after dilution using conservation of cell count and compatible volume units.

Calculate insert DNA mass from vector mass, fragment lengths and a chosen insert-to-vector molar ratio, with bp/kb and mass unit choices.

Relate initial and final populations, elapsed time, hourly fractional growth and doubling time during ideal exponential growth.

Convert positive before-and-after counts into decimal-log and percentage reductions, including inverse count calculations.

Calculate observed mutant frequency from mutant and total counts, or recover a count from the fraction.

Convert a negative standard-curve slope to amplification factor and apparent qPCR efficiency, or recover slope from the factor.