diff --git a/vskernels/kernels/abstract.py b/vskernels/kernels/abstract.py
index 09eb9c3..4f62e9b 100644
--- a/vskernels/kernels/abstract.py
+++ b/vskernels/kernels/abstract.py
@@ -19,12 +19,12 @@
 ]
 
 
-def _default_kernel_size(cls, self) -> int:
-    if hasattr(self, '_static_kernel_size'):
-        return ceil(self._static_kernel_size)
+def _default_kernel_radius(cls, self) -> int:
+    if hasattr(self, '_static_kernel_radius'):
+        return ceil(self._static_kernel_radius)
 
     try:
-        return super(cls, self).kernel_size
+        return super(cls, self).kernel_radius
     except AttributeError:
         ...
 
@@ -133,8 +133,8 @@ def multi(
         return self.scale(clip, dst_width, dst_height, shift, **kwargs)
 
     @inject_self.property
-    def kernel_size(self) -> int:
-        return _default_kernel_size(__class__, self)
+    def kernel_radius(self) -> int:
+        return _default_kernel_radius(__class__, self)
 
 
 class Descaler(vs_object):
@@ -182,8 +182,8 @@ def ensure_obj(
         return BaseScaler.ensure_obj(cls, Descaler, descaler, UnknownDescalerError, [], func_except)  # type: ignore
 
     @inject_self.property
-    def kernel_size(self) -> int:
-        return _default_kernel_size(__class__, self)
+    def kernel_radius(self) -> int:
+        return _default_kernel_radius(__class__, self)
 
 
 class Resampler(vs_object):
@@ -207,8 +207,8 @@ def ensure_obj(
         return BaseScaler.ensure_obj(cls, Resampler, resampler, UnknownDescalerError, [], func_except)  # type: ignore
 
     @inject_self.property
-    def kernel_size(self) -> int:
-        return _default_kernel_size(__class__, self)
+    def kernel_radius(self) -> int:
+        return _default_kernel_radius(__class__, self)
 
 
 class Kernel(Scaler, Descaler, Resampler):
diff --git a/vskernels/kernels/bicubic.py b/vskernels/kernels/bicubic.py
index d26798b..1508c78 100644
--- a/vskernels/kernels/bicubic.py
+++ b/vskernels/kernels/bicubic.py
@@ -69,7 +69,7 @@ def get_params_args(
         return args | dict(filter_param_a=self.b, filter_param_b=self.c)
 
     @inject_self.property
-    def kernel_size(self) -> int:
+    def kernel_radius(self) -> int:
         if (self.b, self.c) == (0, 0):
             return 1
         return 2
@@ -273,5 +273,5 @@ def _get_bc_args(self) -> tuple[float, float]:
         return autob, autoc
 
     @inject_self.property
-    def kernel_size(self) -> int:
-        return Bicubic(*self._get_bc_args()).kernel_size
+    def kernel_radius(self) -> int:
+        return Bicubic(*self._get_bc_args()).kernel_radius
diff --git a/vskernels/kernels/fmtconv.py b/vskernels/kernels/fmtconv.py
index 1236ced..1dca4b0 100644
--- a/vskernels/kernels/fmtconv.py
+++ b/vskernels/kernels/fmtconv.py
@@ -170,7 +170,7 @@ def _shift(shift_top: float | list[float] = 0.0, shift_left: float | list[float]
         return _shift(shifts_top, shifts_left)
 
     @inject_self.property
-    def kernel_size(self) -> int:
+    def kernel_radius(self) -> int:
         taps_hv = self.kwargs.get('taps_h', self.kwargs.get('taps_v', None))
 
         if taps_hv is None:
diff --git a/vskernels/kernels/placebo.py b/vskernels/kernels/placebo.py
index 1f92977..67dcfc1 100644
--- a/vskernels/kernels/placebo.py
+++ b/vskernels/kernels/placebo.py
@@ -85,13 +85,13 @@ def get_params_args(
         )
 
     @inject_self.property
-    def kernel_size(self) -> int:
+    def kernel_radius(self) -> int:
         from .bicubic import Bicubic
 
         if self.taps:
             return ceil(self.taps)
 
         if self.b or self.c:
-            return Bicubic(self.b, self.c).kernel_size
+            return Bicubic(self.b, self.c).kernel_radius
 
         return 2
diff --git a/vskernels/kernels/resize.py b/vskernels/kernels/resize.py
index b446b1b..cb40a49 100644
--- a/vskernels/kernels/resize.py
+++ b/vskernels/kernels/resize.py
@@ -18,7 +18,7 @@ class Point(ZimgComplexKernel):
     """Built-in point resizer."""
 
     scale_function = resample_function = descale_function = core.lazy.resize.Point
-    _static_kernel_size = 1
+    _static_kernel_radius = 1
 
 
 class Bilinear(ZimgComplexKernel):
@@ -26,7 +26,7 @@ class Bilinear(ZimgComplexKernel):
 
     scale_function = resample_function = core.lazy.resize.Bilinear
     descale_function = core.lazy.descale.Debilinear
-    _static_kernel_size = 1
+    _static_kernel_radius = 1
 
 
 class Lanczos(ZimgComplexKernel):
@@ -56,5 +56,5 @@ def get_params_args(
         return args | dict(filter_param_a=self.taps)
 
     @inject_self.property
-    def kernel_size(self) -> int:
+    def kernel_radius(self) -> int:
         return ceil(self.taps)
diff --git a/vskernels/kernels/spline.py b/vskernels/kernels/spline.py
index f768922..280edb8 100644
--- a/vskernels/kernels/spline.py
+++ b/vskernels/kernels/spline.py
@@ -35,7 +35,7 @@ class Spline16(ZimgComplexKernel):
 
     scale_function = resample_function = core.lazy.resize.Spline16
     descale_function = core.lazy.descale.Despline16
-    _static_kernel_size = 2
+    _static_kernel_radius = 2
 
 
 class Spline36(ZimgComplexKernel):
@@ -49,7 +49,7 @@ class Spline36(ZimgComplexKernel):
 
     scale_function = resample_function = core.lazy.resize.Spline36
     descale_function = core.lazy.descale.Despline36
-    _static_kernel_size = 3
+    _static_kernel_radius = 3
 
 
 class Spline64(ZimgComplexKernel):
@@ -63,4 +63,4 @@ class Spline64(ZimgComplexKernel):
 
     scale_function = resample_function = core.lazy.resize.Spline64
     descale_function = core.lazy.descale.Despline64
-    _static_kernel_size = 4
+    _static_kernel_radius = 4
diff --git a/vskernels/kernels/various.py b/vskernels/kernels/various.py
index 285c679..d64064c 100644
--- a/vskernels/kernels/various.py
+++ b/vskernels/kernels/various.py
@@ -109,7 +109,7 @@ def __init__(self, b: float = 0.0, c: float = 0.5, radius: int | None = None, **
         if radius is None:
             from .bicubic import Bicubic
 
-            radius = Bicubic(b, c).kernel_size
+            radius = Bicubic(b, c).kernel_radius
 
         super().__init__(radius, b, c, **kwargs)