diff --git a/.changeset/cost-insights-wet-walls-jog.md b/.changeset/cost-insights-wet-walls-jog.md
new file mode 100644
index 0000000000..8de3037f19
--- /dev/null
+++ b/.changeset/cost-insights-wet-walls-jog.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-cost-insights': minor
+---
+
+convert duration + last completed billing date to intervals