# Transformation functions

- [Fill null values](/bumblebee/transformations/transformation-functions/fill_na.md)
- [Replace](/bumblebee/transformations/transformation-functions/replace.md)
- [String functions](/bumblebee/transformations/transformation-functions/string-functions.md)
- [Lower case](/bumblebee/transformations/transformation-functions/string-functions/lower.md)
- [Upper case](/bumblebee/transformations/transformation-functions/string-functions/upper.md)
- [Proper case](/bumblebee/transformations/transformation-functions/string-functions/proper.md)
- [Remove accents](/bumblebee/transformations/transformation-functions/string-functions/normalize_chars.md)
- [Remove special chars](/bumblebee/transformations/transformation-functions/string-functions/remove_special_chars.md)
- [Normalize white spaces](/bumblebee/transformations/transformation-functions/string-functions/normalize_spaces.md)
- [Left (substring)](/bumblebee/transformations/transformation-functions/string-functions/left_string.md)
- [Right (substring)](/bumblebee/transformations/transformation-functions/string-functions/right_string.md)
- [Mid (substring)](/bumblebee/transformations/transformation-functions/string-functions/mid_string.md)
- [Math functions](/bumblebee/transformations/transformation-functions/math-functions.md)
- [Absolute value](/bumblebee/transformations/transformation-functions/math-functions/abs.md)
- [Round](/bumblebee/transformations/transformation-functions/math-functions/round.md)
- [Floor](/bumblebee/transformations/transformation-functions/math-functions/floor.md)
- [Ceil](/bumblebee/transformations/transformation-functions/math-functions/ceil.md)
- [Modulo](/bumblebee/transformations/transformation-functions/math-functions/mod.md)
- [Logarithm](/bumblebee/transformations/transformation-functions/math-functions/log.md)
- [Natural logarithm](/bumblebee/transformations/transformation-functions/math-functions/ln.md)
- [Power](/bumblebee/transformations/transformation-functions/math-functions/pow.md)
- [Square root](/bumblebee/transformations/transformation-functions/math-functions/sqrt.md)
- [Trigonometric functions](/bumblebee/transformations/transformation-functions/trigonometric-functions.md)
- [Sine](/bumblebee/transformations/transformation-functions/trigonometric-functions/sin.md)
- [Cosine](/bumblebee/transformations/transformation-functions/trigonometric-functions/cos.md)
- [Tangent](/bumblebee/transformations/transformation-functions/trigonometric-functions/tan.md)
- [Inverse Sine](/bumblebee/transformations/transformation-functions/trigonometric-functions/asin.md)
- [Inverse Cosine](/bumblebee/transformations/transformation-functions/trigonometric-functions/acos.md)
- [Inverse Tangent](/bumblebee/transformations/transformation-functions/trigonometric-functions/atan.md)
- [Hyperbolic Sine](/bumblebee/transformations/transformation-functions/trigonometric-functions/sinh.md)
- [Hyperbolic Cosine](/bumblebee/transformations/transformation-functions/trigonometric-functions/cosh.md)
- [Hyperbolic Tangent](/bumblebee/transformations/transformation-functions/trigonometric-functions/tanh.md)
- [Inverse Hyperbolic Sine](/bumblebee/transformations/transformation-functions/trigonometric-functions/asinh.md)
- [Inverse Hyperbolic Cosine](/bumblebee/transformations/transformation-functions/trigonometric-functions/acosh.md)
- [Inverse Hyperbolic Tangent](/bumblebee/transformations/transformation-functions/trigonometric-functions/atanh.md)
- [Time and Date](/bumblebee/transformations/transformation-functions/time-and-date.md)
- [Transform format](/bumblebee/transformations/transformation-functions/time-and-date/transformformat.md)
- [Year](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_year.md)
- [Year (short)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_yearshort.md)
- [Month name](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_month.md)
- [Month name (short)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_monthshort.md)
- [Month as a number](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_monthnumber.md)
- [Day of month](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_day.md)
- [Weekday](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_weekday.md)
- [Weekday (short)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_weekdayshort.md)
- [Weekday as a number](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_weekdaynumber.md)
- [Minute](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_hour.md)
- [Hour (00-23)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_hour24.md)
- [AM/PM](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_ampm.md)
- [UTC offset](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_utc.md)
- [Timezone](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_timezone.md)
- [Day number of year](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_daynumber.md)
- [Weekday of year (Mon as 1st)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_weeknumberm.md)
- [Weekday of year (Sun as 1st)](/bumblebee/transformations/transformation-functions/time-and-date/date_extract_weeknumbers.md)
- [Web related functions](/bumblebee/transformations/transformation-functions/web-related-functions.md)
- [Domain](/bumblebee/transformations/transformation-functions/web-related-functions/domain.md)
- [Subdomain](/bumblebee/transformations/transformation-functions/web-related-functions/subdomain.md)
- [Url scheme](/bumblebee/transformations/transformation-functions/web-related-functions/url_scheme.md)
- [Port](/bumblebee/transformations/transformation-functions/web-related-functions/port.md)
- [Url path](/bumblebee/transformations/transformation-functions/web-related-functions/url_path.md)
- [Url params](/bumblebee/transformations/transformation-functions/web-related-functions/url_params.md)
- [Email domain](/bumblebee/transformations/transformation-functions/web-related-functions/email_domain.md)
- [Email username](/bumblebee/transformations/transformation-functions/web-related-functions/email_username.md)
- [Strip HTML](/bumblebee/transformations/transformation-functions/web-related-functions/strip_html.md)
- [Machine Learning](/bumblebee/transformations/transformation-functions/machine-learning.md)
- [Random sampling](/bumblebee/transformations/transformation-functions/machine-learning/sample_n.md)