> For the complete documentation index, see [llms.txt](https://hi-primus.gitbook.io/bumblebee/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hi-primus.gitbook.io/bumblebee/transformations/transformation-functions.md).

# Transformation functions

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