No-Decompression Limit Calculator

    Calculate how long you can safely remain at depth without requiring decompression stops. This tool uses standard dive tables to determine your limits.

    Calculate Your NDL

    Adjust the depth and select your preferred dive table algorithm.

    Feet
    Meters

    Set your planned dive depth.

    Different organizations use slightly different tables.

    Your NDL Result

    Maximum time allowed at your specified depth

    About NDL calculations

    Safety Notes

    • Always dive with a proper dive computer

    • This calculator is for planning purposes only

    • Follow the most conservative NDL

    • Stay within your training and certification limits

    • Include a safety buffer in your calculations