Type your ugBASIC program in the following box. Some BASIC rules:
  • keywords must be UPPERCASE, like PRINT
  • comments that are placed at the end of a line must be preceded by a colon:
    • this is good: PRINT "OK!": ' comment
    • this is wrong: PRINT "OK!" ' comment
Click on Build menu to select the target: you will download the compiled binary file!

BITMAP ENABLE(16) CLS POSITIVE CONST boxWidth = SCREEN WIDTH / 10 POSITIVE CONST boxHeight = SCREEN HEIGHT / 10 INK YELLOW BOX 0,0 TO boxWidth, boxHeight INK RED BOX 16,16 TO 16+boxWidth, 16+boxHeight INK GREEN BOX 32,32 TO 32+boxWidth, 32+boxHeight
Some examples: HELLO WORLD PARABOLA AND HYPERBOLA PRE-EMPTIVE PARALLEL COMPUTING

Welcome to the ugBASIC sandbox!

This tool was designed to quickly test whether the code you are writing compiles correctly and determines the desired results. Since the source is compiled thanks to dedicated servers, separate from the browser you are using, some commands are not available: for example, you cannot load external files or resources by using the LOAD command. If you need to develop a program with a complete tool, we recommend installing the executables or the UGBASIC-IDE.

Unless required by applicable law or agreed to in writing, this website is given on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.