How to change text for Add to Cart button for Woocommerce

This task can be solved by editing the translation files of your theme. But you can use a hook that allows you to rename the “Add to Cart” button faster. In the file functions.php add the following code:

add_filter( 'woocommerce_product_single_add_to_cart_text', 'tb_woo_custom_cart_button_text' );
add_filter( 'woocommerce_product_add_to_cart_text', 'tb_woo_custom_cart_button_text' );   
function tb_woo_custom_cart_button_text() {
        return __( 'Buy!', 'woocommerce' );
}

The word “Buy!” in this example can be changed to any word, but do not touch the quotes.

Change phrases View cart, Update cart, Checkout

Use the following code:

function tb_text_strings( $translated_text, $text, $domain ) {
    switch ( $translated_text ) {
        case 'View cart' :
            $translated_text = __( 'Go to your shopping cart', 'woocommerce' );
            break;
        case 'Update cart' :
            $translated_text = __( 'Refresh your shopping cart', 'woocommerce' );
            break;
        case 'Checkout' :
            $translated_text = __( 'Finish your order', 'woocommerce' );
            break;
    }
    return $translated_text;
}
add_filter( 'gettext', 'tb_text_strings', 20, 3 );