diff --git a/test/convert/test_atoi.c b/test/convert/test_atoi.c
new file mode 100644
index 0000000..d065a80
--- /dev/null
+++ b/test/convert/test_atoi.c
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   test_atoi.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/09/04 16:54:42 by rparodi           #+#    #+#             */
+/*   Updated: 2025/09/05 15:05:21 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "color.h"
+#include "convert.h"
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int	main(void)
+{
+	const char	*str[] = {"", "0", "42", "-42", "+-42", "-2147483648",
+		"2147483647"};
+	size_t		i;
+
+	i = 0;
+	while (i < 7)
+	{
+		if (ft_atoi(str[i]) != atoi(str[i]))
+		{
+			dprintf(2, "%s✘ Found %i, expected %i%s\n", CLR_RED,
+				ft_atoi(str[i]), atoi(str[i]), RESET);
+			exit(1);
+		}
+		else
+			printf("%s✔%s ", CLR_GREEN, RESET);
+		i++;
+	}
+	ft_atoi(NULL);
+	printf("%s✔%s", CLR_GREEN, RESET);
+	puts("\n");
+}
diff --git a/test/convert/test_atoll.c b/test/convert/test_atoll.c
new file mode 100644
index 0000000..323e6a5
--- /dev/null
+++ b/test/convert/test_atoll.c
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   test_atoll.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/09/04 16:54:42 by rparodi           #+#    #+#             */
+/*   Updated: 2025/09/05 15:05:31 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "color.h"
+#include "convert.h"
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int	main(void)
+{
+	const char	*str[] = {"", "0", "42", "-42", "+-42", "-2147483648",
+		"2147483647", "9223372036854775807", "-9223372036854775808"};
+	size_t		i;
+
+	i = 0;
+	while (i < 7)
+	{
+		if (ft_atoll(str[i]) != atoll(str[i]))
+		{
+			dprintf(2, "%s✘ Found %lli, expected %lli%s\n", CLR_RED,
+				ft_atoll(str[i]), atoll(str[i]), RESET);
+			exit(1);
+		}
+		else
+			printf("%s✔%s ", CLR_GREEN, RESET);
+		i++;
+	}
+	ft_atoll(NULL);
+	printf("%s✔%s", CLR_GREEN, RESET);
+	puts("\n");
+}
diff --git a/test/convert/test_itoa.c b/test/convert/test_itoa.c
new file mode 100644
index 0000000..8b1190c
--- /dev/null
+++ b/test/convert/test_itoa.c
@@ -0,0 +1,43 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   test_itoa.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/09/04 16:54:42 by rparodi           #+#    #+#             */
+/*   Updated: 2025/09/05 15:08:52 by rparodi          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "color.h"
+#include "convert.h"
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int	main(void)
+{
+	const int	integer[] = {0, 42, -42, +-42, -2147483648, 2147483647};
+	char		result[1024];
+	size_t		i;
+
+	i = 0;
+	while (i < 7)
+	{
+		sprintf(result, "%d", integer[i]);
+		if (strcmp(ft_itoa(integer[i]), result))
+		{
+			dprintf(2, "%s✘ Found %s, expected %s%s\n", CLR_RED,
+				ft_itoa(integer[i]), result, RESET);
+			exit(1);
+		}
+		else
+			printf("%s✔%s ", CLR_GREEN, RESET);
+		i++;
+	}
+	ft_atoi(NULL);
+	printf("%s✔%s", CLR_GREEN, RESET);
+	puts("\n");
+}