diff --git a/NAMESPACE b/NAMESPACE
index e3911363..30a76c8a 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -185,6 +185,8 @@ export(oddsratio)
 export(oddsratio_to_arr)
 export(oddsratio_to_d)
 export(oddsratio_to_nnt)
+export(oddsratio_to_odds)
+export(oddsratio_to_probs)
 export(oddsratio_to_r)
 export(oddsratio_to_riskratio)
 export(omega_squared)
diff --git a/R/convert_between_riskchange_ro_probs.R b/R/convert_between_riskchange_ro_probs.R
new file mode 100644
index 00000000..bcbc8250
--- /dev/null
+++ b/R/convert_between_riskchange_ro_probs.R
@@ -0,0 +1,47 @@
+#' Convert Between Metrics of Change in Probabilities and Probabilities
+#'
+#'
+#' @param OR Odds ratio `odds(p1)/odds(p0)`
+#' @param p0,Odds0 Base rate or odds. Exactly one must be specified.
+#' @param log If `TRUE`, inputs `OR` and `Odds0` are taken to be `logOR` and
+#'   `logOdds0`, and outputted odds are `logOdds1`.
+#' @param ... Ignored
+#'
+#' @export
+oddsratio_to_odds <- function(OR, p0, Odds0, log = FALSE, ...) {
+  if ((missing(p0) && missing(Odds0)) || (!missing(p0) && !missing(Odds0))) {
+    insight::format_error("Exactly one of `p0` or `Odds0` must be supplied.")
+  }
+
+  if (missing(Odds0)) {
+    Odds0 <- probs_to_odds(Odds0, log = TRUE)
+  } else if (!log) {
+    Odds0 <- log(Odds0)
+  }
+
+  Odds1 <- OR + Odds0
+
+  if (!log) Odds1 <- exp(Odds1)
+
+  return(Odds1)
+}
+
+#' @export
+#' @rdname oddsratio_to_odds
+oddsratio_to_probs <- function(OR, p0, Odds0, log = FALSE, ...) {
+  Odds1 <- oddsratio_to_odds(OR, p0, Odds0, log = log)
+  if (log) Odds1 <- exp(Odds1)
+  odds_to_probs(Odds1)
+}
+
+
+# LogOR -------------------------------------------------------------------
+
+
+# RR ----------------------------------------------------------------------
+
+
+# ARR ---------------------------------------------------------------------
+
+
+# NNT ---------------------------------------------------------------------
diff --git a/_pkgdown.yml b/_pkgdown.yml
index ce36fdfc..839f1cbd 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -69,6 +69,7 @@ reference:
       - oddsratio_to_riskratio
       - d_to_u3
       - eta2_to_f2
+      - oddsratio_to_odds
       - odds_to_probs
 
   - title: "Interpretation"
diff --git a/man/oddsratio_to_odds.Rd b/man/oddsratio_to_odds.Rd
new file mode 100644
index 00000000..19641405
--- /dev/null
+++ b/man/oddsratio_to_odds.Rd
@@ -0,0 +1,24 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/convert_between_riskchange_ro_probs.R
+\name{oddsratio_to_odds}
+\alias{oddsratio_to_odds}
+\alias{oddsratio_to_probs}
+\title{Convert Between Metrics of Change in Probabilities and Probabilities}
+\usage{
+oddsratio_to_odds(OR, p0, Odds0, log = FALSE, ...)
+
+oddsratio_to_probs(OR, p0, Odds0, log = FALSE, ...)
+}
+\arguments{
+\item{OR}{Odds ratio \code{odds(p1)/odds(p0)}}
+
+\item{p0, Odds0}{Base rate or odds. Exactly one must be specified.}
+
+\item{log}{If \code{TRUE}, inputs \code{OR} and \code{Odds0} are taken to be \code{logOR} and
+\code{logOdds0}, and outputted odds are \code{logOdds1}.}
+
+\item{...}{Ignored}
+}
+\description{
+Convert Between Metrics of Change in Probabilities and Probabilities
+}