Index: head/math/Makefile
===================================================================
--- head/math/Makefile
+++ head/math/Makefile
@@ -136,6 +136,7 @@
     SUBDIR += asymptote
     SUBDIR += atlas
     SUBDIR += barvinok
+    SUBDIR += bcal
     SUBDIR += biggles
     SUBDIR += blacs
     SUBDIR += blas
Index: head/math/bcal/Makefile
===================================================================
--- head/math/bcal/Makefile
+++ head/math/bcal/Makefile
@@ -0,0 +1,44 @@
+# $FreeBSD$
+
+PORTNAME=	bcal
+DISTVERSIONPREFIX=	v
+DISTVERSION=	2.1-12
+DISTVERSIONSUFFIX=	-g6867abd
+CATEGORIES=	math
+
+MAINTAINER=	0mp@FreeBSD.org
+COMMENT=	Storage expression, unit conversion & address offset CLI calculator
+
+LICENSE=	GPLv3
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+ONLY_FOR_ARCHS=	amd64
+
+TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest>0:devel/py-pytest@${PY_FLAVOR}
+
+USES=	gmake python:test,3.5+ readline
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	jarun
+
+MAKE_ARGS=	MANDIR=${STAGEDIR}${MAN1PREFIX}/man/man1
+
+PLIST_FILES=	bin/bcal \
+		man/man1/bcal.1.gz
+
+PORTDOCS=	CHANGELOG \
+		README.md
+
+OPTIONS_DEFINE=	DOCS
+
+post-install:
+	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/bcal
+
+post-install-DOCS-on:
+	${MKDIR} ${STAGEDIR}/${DOCSDIR}
+	${INSTALL_DATA} ${PORTDOCS:S|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
+
+do-test:
+	cd ${TEST_WRKSRC} && ${SETENV} ${TEST_ENV} ${PYTHON_CMD} -m pytest -v test.py
+
+.include <bsd.port.mk>
Index: head/math/bcal/distinfo
===================================================================
--- head/math/bcal/distinfo
+++ head/math/bcal/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1545051676
+SHA256 (jarun-bcal-v2.1-12-g6867abd_GH0.tar.gz) = a7850da96b146824933534811078e3ae9f804c29e406cf5e89eb4be83d584f47
+SIZE (jarun-bcal-v2.1-12-g6867abd_GH0.tar.gz) = 34348
Index: head/math/bcal/pkg-descr
===================================================================
--- head/math/bcal/pkg-descr
+++ head/math/bcal/pkg-descr
@@ -0,0 +1,24 @@
+bcal (Byte CALculator) is a REPL CLI utility for storage expressions, unit
+conversions or address calculations. If you can't calculate the hex address
+offset for (512 - 16) MiB, or the value when the 43rd bit of a 64-bit address
+is set mentally, bcal is for you.
+
+It has a bc mode for general-purpose numerical calculations.
+
+bcal follows Ubuntu's standard unit conversion and notation policy. Only 64-bit
+operating systems are supported.
+
+Features:
+
+- evaluate arithmetic expressions involving storage units
+- perform general purpose calculations (using bc)
+- convert to IEC/SI standard data storage units
+- interactive mode with the last valid result stored for reuse
+- show the address in bytes
+- show address as LBA:OFFSET
+- convert CHS to LBA and vice versa
+- base conversion to binary, decimal and hex
+- custom sector size, max heads/cylinder and max sectors/track
+- minimal dependencies
+
+WWW: https://github.com/jarun/bcal