Convert text to natural-sounding speech. Multiple voices and languages. Free.
0/20,000 characters
KlipTools Text to Speech converts written text into realistic, human-sounding audio using advanced neural network models. Whether you need a voiceover for a video, an audio version of a blog post, or a pronunciation guide for language learning, this tool handles it in seconds.
Every generation runs Supertonic 3 on our servers: 10 studio-quality voices (5 female, 5 male) speaking 17 languages. You get a free allowance every day without an account (the line above the button shows what you have left); past it, each character costs 3 credits.
No account, no signup, no watermarks. Type your text, pick a voice, and download it as MP3 or WAV, ready to use anywhere.
Traditional text-to-speech systems relied on concatenating pre-recorded audio fragments, producing robotic and unnatural results. Modern neural TTS models like the ones powering KlipTools take a fundamentally different approach: they learn the patterns of human speech -- rhythm, intonation, stress, and pacing -- from large datasets of recorded speech.
KlipTools uses Supertonic 3, a compact flow-matching model of about 99 million parameters running through ONNX Runtime. It produces studio-quality audio with rich prosody and natural breathing patterns, and is small enough to synthesize speech far faster than real time.
AI TTS voices are generated by neural networks trained on large datasets of human speech recordings. The model learns to map text input to audio waveforms by understanding phonetics, prosody, stress patterns, and natural pauses. During generation, it predicts the acoustic features of speech frame by frame, then a vocoder converts those features into an audible waveform. The result sounds far more natural than older concatenative or formant-based systems.
Modern neural TTS models capture subtle aspects of human speech that rule-based systems miss: micro-variations in pitch, natural breathing rhythms, contextual emphasis, and smooth transitions between phonemes. Supertonic 3 uses a deep learning architecture trained on hundreds of hours of studio-quality speech, which is what lets it reproduce those nuances convincingly.
The dropdown offers 17 languages: English, Portuguese, Spanish, French, German, Italian, Dutch, Polish, Russian, Turkish, Japanese, Korean, Chinese, Arabic, Hindi, Indonesian and Vietnamese. All 10 voices speak all of them, and the underlying model covers 31 languages in total.
Yes. You can choose from multiple distinct voices for each language, selecting different genders and speaking styles. A speed control slider adjusts the speaking rate from 0.7x to 2.0x. Each voice has its own characteristic tone, pitch, and cadence.
Each generation takes up to 20,000 characters. For longer documents, you can split your text into sections and generate them separately, then combine the audio files in any audio editor.
Both, from the same generation: a 128 kbps MP3 for anything you are about to publish, and an uncompressed WAV as a master to edit from. Download either or both. To convert them further, the free KlipTools audio converter handles AAC, OGG and the rest.
Yes. The voices are generated by Supertonic 3, whose model weights are released under the OpenRAIL-M open license. Commercial use of the generated audio is allowed, including in videos, podcasts, apps, advertisements, and products you sell, as long as it is not used to deceive, harm, or impersonate a real person without consent.
Your text is sent to our server, converted to audio, and discarded immediately afterwards. We do not store, log, or use your text for any other purpose.
A speed slider sets the rate from 0.7x (slower, useful for language learning or accessibility) to 2.0x (double speed, useful for fast narration). The default of 1.0x is a natural speaking pace.
Currently, SSML (Speech Synthesis Markup Language) tags are not supported. The tool processes plain text input. However, the AI model naturally handles punctuation cues -- commas create short pauses, periods create longer pauses, and question marks adjust intonation. You can use punctuation strategically to influence pacing and emphasis.
The neural model has been trained on diverse text and generally handles proper nouns, technical terms, and abbreviations well. For uncommon words, you can try phonetic spelling to guide pronunciation. Numbers, dates, and common abbreviations are expanded automatically. If a word is consistently mispronounced, respelling it phonetically in the input usually resolves the issue.
Absolutely. Text-to-speech technology is a cornerstone of digital accessibility. This tool can help create audio versions of written content for visually impaired users, people with reading difficulties like dyslexia, or anyone who processes information better through listening. The generated WAV files can be embedded in websites, shared alongside documents, or played through assistive technology.
Yes. The tool is fully responsive and works on smartphones and tablets. Speech is generated on our servers, so the work does not depend on your hardware -- a phone gets the same audio, just as fast, as a desktop.
The tool currently processes one text input at a time. For batch conversion, you can generate each section sequentially and download the individual audio files. If you need to merge them afterward, any basic audio editor such as Audacity can concatenate WAV files in seconds.
No, KlipTools Text to Speech does not offer voice cloning. All available voices are pre-trained models with fixed characteristics. This is a deliberate choice -- voice cloning raises significant ethical and legal concerns. The tool provides a curated set of high-quality, ethically produced voices instead.
Supertonic 3 is an open text-to-speech model from Supertone, built to run on-device through ONNX Runtime: about 99 million parameters, 31 languages, 10 voice styles, and generation many times faster than real time on a CPU. It produces natural prosody with expressive intonation. KlipTools runs it on our servers, so you get the same result on any device.
Every visitor gets a free daily allowance at no cost and with no account, sign-up or card. The allowance is shared by all KlipTools tools and resets at midnight UTC; at the moment it covers roughly 3,300 characters of speech, and the line above the button shows the exact amount left. When it runs out you can come back tomorrow, or paste a KlipTools credits code to carry on straight away. With credits, each character costs 3 credits, so 1,000 characters cost about 4 cents.
Yes. After downloading the WAV file, you can host it on your web server or a CDN and embed it using a standard HTML5 <audio> tag. You can also convert it to MP3 for smaller file sizes before embedding. Supertonic's OpenRAIL-M license places no restrictions on where you host or distribute the audio, only on harmful or deceptive uses.
KlipTools does not currently offer a public TTS API. The tool is designed for interactive use on this page. If you need programmatic access to Supertonic TTS, the model is open and can be self-hosted -- check the Supertonic project repository for documentation on running your own instance.
Yes -- speech is generated on our servers, so the page needs a connection. The WAV file you download afterwards is yours to keep and use offline as often as you like.