diff --git a/tsv2vcard.scm b/tsv2vcard.scm
new file mode 100644
index 0000000..4ae665d
--- /dev/null
+++ b/tsv2vcard.scm
@@ -0,0 +1,46 @@
+;; Copyright (C) 2023 Camden Dixie O'Brien
+;; SPDX-License-Identifier: AGPL-3.0-only
+
+(define (tsv-fields line)
+  (reverse
+   (let iter ((len (string-length line))
+			  (rem (string-copy line))
+			  (idx 0)
+			  (res '()))
+	 (cond ((>= idx len) (cons rem res))
+		   ((char=? #\tab (string-ref rem idx))
+			(iter (- len idx 1)
+				  (substring rem (+ idx 1) len)
+				  0
+				  (cons (substring rem 0 idx) res)))
+		   (else (iter len rem (+ idx 1) res))))))
+
+(define (vcard name number)
+  (with-output-to-string
+	(lambda ()
+	  (display "BEGIN:VCARD")
+	  (newline)
+	  (display "N:;")
+	  (display name)
+	  (display ";;;")
+	  (newline)
+	  (display "TEL;TYPE=cell:")
+	  (display number)
+	  (newline)
+	  (display "END:VCARD")
+	  (newline))))
+
+(define (tsv-contact->vcard line)
+  (let* ((fields (tsv-fields line))
+		 (number (list-ref fields 0))
+		 (name (list-ref fields 1)))
+	(vcard name number)))
+
+(define (foreach-line thunk)
+  (let loop ()
+	(let ((line (get-line (current-input-port))))
+	  (when (not (eof-object? line))
+		(display (thunk line))
+		(loop)))))
+
+(foreach-line tsv-contact->vcard)