Engine category
Calculators
Exact unit, percentage, date, ratio and bitrate calculations.
Local
Unit converter
Convert compatible measurement units with a local catalogue.
Open toolLocal
Percentage, margin and markup
Calculate percentages with decimal-safe arithmetic.
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Date difference
Calculate calendar days, hours and minutes between dates.
Open toolLocal
Aspect-ratio calculator
Simplify dimensions and calculate matching width or height.
Open toolLocal
Video file-size estimator
Estimate output size from duration and aggregate bitrate.
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