diff --git a/src/scgenerator/plotting.py b/src/scgenerator/plotting.py
index c502157..31ef28c 100644
--- a/src/scgenerator/plotting.py
+++ b/src/scgenerator/plotting.py
@@ -1155,6 +1155,16 @@ def annotate_fwhm(
     ax.text(x, y, arrow_label, transform=trans, **text_kwargs)
 
 
+def auto_time_range(t: np.ndarray, t_int: np.ndarray, threshold: float) -> PlotRange:
+    imin, imax = math.span_above(t_int, t_int.max() * threshold)
+    return PlotRange(t[imin] * 1e15, t[imax] * 1e15, "fs")
+
+
+def auto_wl_range(wl: np.ndarray, wl_int: np.ndarray, threshold: float) -> PlotRange:
+    imin, imax = math.span_above(wl_int, wl_int.max() * threshold)
+    return PlotRange(wl[imin] * 1e9, wl[imax] * 1e9, "nm")
+
+
 def summary_plot(
     specs: Spectrum,
     z: Sequence[float] | None = None,