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Audio Cutter lets you trim a single segment from an audio file by specifying start and end times in seconds. You upload a track, set the start and end range (or use the sample preset for the first minute), and click Cut audio to receive a new file containing only that segment, re-encoded as MP3. The backend uses FFmpeg to perform a precise time-based cut and returns the trimmed audio plus original and cut sizes and total duration. An optional AI Assistant can suggest a trim range (for example an intro, outro, or middle clip) based on the file duration; the AI only proposes start and end values and does not modify your file until you run the cut yourself.
Note: AI can make mistakes, so please double-check it.
Free plan includes audio uploads up to 20MB. Paid plans unlock up to 50MB.
Upgrade to trim larger audio filesTrim range (seconds)
Start and end time for the segment to keep.
Get a suggested trim range (e.g. intro or highlight clip). The AI only suggests start and end times; you still run Cut audio yourself.
Common questions about this tool
Upload your audio file, then enter the start time and end time in seconds for the segment you want to keep. Click Cut audio; the backend trims the file to that range and returns a new MP3. You can use the sample preset to quickly set the first minute, or use the optional AI Assistant to get a suggested range before cutting.
The tool accepts common audio formats (e.g. MP3, WAV, M4A, AAC, OGG, FLAC) up to 50MB. The output is always MP3 so it is widely playable and easy to share.
Start and end are specified in seconds (including decimals). You can convert minutes to seconds (e.g. 1:30 = 90 seconds) and enter that. The tool shows the file duration after probing so you can choose a valid range.
When you click Suggest trim with AI, the tool sends the file duration and a use case (e.g. clip) to a backend AI service. It returns suggested start and end times and a short rationale; the interface applies these to the inputs. You still need to click Cut audio to generate the trimmed file—the AI only suggests the range.
The segment is re-encoded to MP3 for consistent output and smaller size. For lossless source formats this involves encoding loss; for already lossy sources, keeping a short segment as MP3 is a common and practical approach for sharing or embedding.
Upload your audio file to the Audio Cutter, enter the start and end times in seconds for the segment you want to keep, and click Cut audio. The tool returns a new MP3 containing only that segment. You can use the sample preset for the first minute or the optional AI Assistant to get a suggested range.
Yes. Set the start time to when you want the segment to begin and the end time to when it should stop, both in seconds. The backend trims the file to that range and gives you a single downloadable clip. For multiple segments, run the tool once per segment.
The tool accepts common audio formats including MP3, WAV, M4A, AAC, OGG, and FLAC, up to 50MB. The output is always MP3 for compatibility and smaller size.
The selected segment is re-encoded to MP3. Lossless sources will be encoded to lossy MP3; already lossy files are re-encoded for the cut segment. This is standard for web-based trimming and keeps output consistent and shareable.
The AI Assistant suggests a start and end time based on the file duration and a use case (e.g. intro, outro, or middle clip). The tool fills those values into the inputs; you still click Cut audio to generate the trimmed file. The AI does not modify your file automatically.
Verified content & sources
This tool's content and its supporting explanations have been created and reviewed by subject-matter experts. Calculations and logic are based on established research sources.
Scope: interactive tool, explanatory content, and related articles.
ToolGrid — Product & Engineering
Leads product strategy, technical architecture, and implementation of the core platform that powers ToolGrid calculators.
ToolGrid — Research & Content
Conducts research, designs calculation methodologies, and produces explanatory content to ensure accurate, practical, and trustworthy tool outputs.
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Learn what this tool does, when to use it, and how it fits into your workflow.
The Audio Cutter is a web-based tool that trims a single segment from an audio file by start and end time. You upload a track, set the range in seconds (or use a preset for the first minute), and receive a new file containing only that segment, re-encoded as MP3. No installation or account is required; processing runs on a backend using FFmpeg so that long files and precise cuts are handled reliably. The tool is aimed at creators who need quick clips—intros, outros, highlights, or ringtones—without opening a full editor.
Time-based trimming is the most common way to shorten or extract a part of an audio file. You specify when the segment starts and when it ends; the rest is discarded. This is useful for turning a long recording into a short clip, removing silence at the start or end, isolating a chorus or a spoken segment, or creating a fixed-length preview. The Audio Cutter does one thing well: one segment per run, with clear inputs (start and end in seconds) and a single download. For multiple segments or more complex edits, you would run the tool multiple times or use a dedicated editor.
Because the output is always MP3, the result is easy to share, embed, or re-use in other tools. You can chain the Audio Cutter with other utilities in the same cluster—for example, convert with the AAC Converter, compress with the AAC Compressor, or check bitrate with the Audio Bitrate Analyzer—without leaving the workflow.
The interface follows a simple flow: upload, set range, cut, download. First, drop or select an audio file (common formats such as MP3, WAV, M4A, AAC, OGG, and FLAC are supported, up to 50MB). The tool may show the file duration after a quick probe so you can choose a valid range. Enter the start time and end time in seconds; decimals are allowed for sub-second precision. A sample preset sets the range to the first minute (or the full file if it is shorter), which is useful for a quick test or a short preview. When you click Cut audio, the backend trims the file to that range, re-encodes to MP3, and returns the new file with original and cut sizes and duration. You then download the trimmed audio. There is no multi-track timeline or waveform editor; the tool is built for a single, time-based cut per run.
An optional AI Assistant can suggest a trim range. You click Suggest trim with AI; the tool sends the file duration and a use case (e.g. clip, intro, outro) to a backend service, which returns suggested start and end times and a short explanation. The interface fills in those values; you still run Cut audio yourself to generate the file. The AI only proposes a range and does not change your audio automatically.
The backend uses FFmpeg to perform the cut. The selected segment is re-encoded to MP3 rather than stream-copied, so output is consistent and compact. For lossless sources this implies encoding loss; for already lossy files, trimming and re-encoding a short segment is a standard approach. Start and end are validated against the detected duration: end is capped to the file length, and invalid ranges (e.g. end less than or equal to start) are rejected with a clear message. Large files or long segments may take longer to process; the request timeout allows for multi-minute tracks.
The Audio Cutter does not support fade-in/fade-out, volume changes, or multiple segments in one run. For stereo or multi-channel input, channels are preserved in the cut. If you need to adjust balance or boost bass after trimming, you can use the Audio Balance Adjuster or the Audio Bass Booster on the cut file.
Use the Audio Cutter when you need a single, time-based segment from an existing file: a 30-second intro, a one-minute highlight, a clean clip without leading or trailing silence, or a ringtone-length slice. It fits into a conversion and compression workflow alongside other video-audio tools in the cluster, with a clear input–output contract and no account or installation required.
We’ll add articles and guides here soon. Check back for tips and best practices.
Summary: Audio Cutter lets you trim a single segment from an audio file by specifying start and end times in seconds. You upload a track, set the start and end range (or use the sample preset for the first minute), and click Cut audio to receive a new file containing only that segment, re-encoded as MP3. The backend uses FFmpeg to perform a precise time-based cut and returns the trimmed audio plus original and cut sizes and total duration. An optional AI Assistant can suggest a trim range (for example an intro, outro, or middle clip) based on the file duration; the AI only proposes start and end values and does not modify your file until you run the cut yourself.